Toyota Prius: Safety Connect System

Toyota Prius (XW60) 2023-2025 Service Manual / Audio/Visual/Telematics / Cellular Communication / Safety Connect System

Precaution
Parts Location
System Diagram
System Description
How To Proceed With Troubleshooting
Dcm Operation History
Dcm Activation
Acn Call End
Customize Parameters
Initialization
Problem Symptoms Table
Terminals Of Ecu
Diagnosis System
Data List / Active Test
Diagnostic Trouble Code Chart
Vehicle Control History
Indicator (Red) Circuit Short to Ground (B157011,B157013)
Microphone Circuit Open (B157213)
DCM System Internal Failure (B15A804)
GNSS Antenna Circuit Short to Ground (B15C111,B15C113)
Airbag Signal Signal Plausibility Failure (B15C464)
Emergency Call Switch Circuit Short to Ground (B15C511,B15C513)
Telephone Main Antenna Circuit Short to Ground (B15CB11,B15CB13)
Backup Battery Internal Electronic Failure (B15CC49)
Green Indicator Remains Off
Red Indicator Remains On
Unable To Connect To Call Center
Emergency Call Switch Illumination Circuit

Precaution

PRECAUTION

PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

Click here

HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

WHEN AUTOMATIC COLLISION NOTIFICATION HAS ACTIVATED

(a) Perform "ACN CALL END" with the GTS to terminate ACN (Automatic Collision Notification) with the call center.

Click here

WHEN DISCONNECTING CONNECTORS FROM DCM (TELEMATICS TRANSCEIVER)

(a) The ignition switch must be off.

WHEN REPLACING THE DCM (TELEMATICS TRANSCEIVER)

(a) After installing a new DCM (telematics transceiver), perform "DCM ACTIVATION" with the GTS. This allows the Telematics service provider to register the new DCM (telematics transceiver) and to delete the old DCM (telematics transceiver) information from their database.

Click here

NOTICE:

Do not replace the DCM (telematics transceiver) with one from another Toyota Prius vehicle.

WHEN UNABLE TO CONTACT WITH CALL CENTER BUT NO DTC

(a) This may occur when the cellular signal strength was very weak. Check "DCM OPERATION HISTORY" with the GTS.

Click here

WHEN DIAGNOSING DCM (TELEMATICS TRANSCEIVER)

(a) While attempting to diagnose the DCM (telematics transceiver), do not use a DCM (telematics transceiver) from another Toyota Prius vehicle. Each DCM (telematics transceiver) is registered to a specific VIN and should not be tested in another vehicle.

PRECAUTION FOR DCM (TELEMATICS TRANSCEIVER)

(a) The DCM (telematics transceiver) uses a LTE (Long Term Evolution) type radio wave signal. The radio wave signals and communication lines may occasionally be unstable depending on time or location factors. Therefore, network access errors may occur intermittently because of radio wave signal conditions. To determine if there is a problem, it may be necessary to make a judgment based on the frequency of the phenomenon or by making a comparison with a comparable type of cell phone.

(b) With the exception of replacing the mobilephone battery, the DCM (telematics transceiver) cannot be disassembled (the DCM (telematics transceiver) case must not be opened). Replace parts.

PRECAUTION FOR MOBILEPHONE BATTERY

(a) The mobilephone battery is a Lithium-ion type battery and can be charged from the DCM (telematics transceiver).

(b) When ACN (Automatic Collision Notification) is performed, the mobilephone battery provides power to the DCM (telematics transceiver).

NOTICE:

The mobilephone battery must not be replaced while an ACN call is in progress.

HINT:

When a Manual Emergency Call is made, the mobilephone battery is not used as the power source.

(c) When it is time to replace the mobilephone battery, the manual (SOS) switch red indicator will come on. The DCM (telematics transceiver) will also store a DTC or specific Toyota Prius vehicle control history (RoB) code.

PRECAUTION FOR REGISTRATION

(a) If replacing any of the following parts, refer to Work Procedure of When Replacing or Removing/Installing Parts.

Click here

(1) DCM (telematics transceiver)

(2) Mobilephone battery

Parts Location

PARTS LOCATION

ILLUSTRATION

FRONT NO. 3 SPEAKER ASSEMBLY (RH)

TELEPHONE AND GPS ANTENNA (for Front Side)

- Telephone Sub

- GPS

DCM (TELEMATICS TRANSCEIVER)

- BUB (BACK-UP BATTERY)

AIRBAG ECU ASSEMBLY

POWER DISTRIBUTION BOX ASSEMBLY

- DCM FUSE

- ECU-IGR NO. 3 FUSE

DLC3

ILLUSTRATION

TELEPHONE MICROPHONE ASSEMBLY LH

MAP LIGHT ASSEMBLY

- MANUAL (SOS) SWITCH

TELEPHONE AND GPS ANTENNA (for Roof Side)

- Telephone Main

ILLUSTRATION

*1	TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type A))	*2	TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type B))
*3	TELEPHONE AND GPS ANTENNA CORD (NO. 3 ANTENNA CORD SUB-ASSEMBLY)	*4	TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type C))

System Diagram

SYSTEM DIAGRAM

System Description

SYSTEM DESCRIPTION

DESCRIPTION

(a) Safety Connect performs ACN (Automatic Collision Notification), manual emergency calling, stolen vehicle tracking and roadside assistance service, by audio and data communications between the vehicle and call center through a cellular phone network. As shown in the illustration, when a collision is detected, the Toyota Prius vehicle sends its location calculated based on GPS signals and the identification code of the DCM (telematics transceiver) to a call center. After the necessary information has been gathered, the call center will relay this information to emergency services.

SYSTEM FUNCTION

(a) ACN (Automatic Collision Notification)

(1) When a collision is detected, the Toyota Prius vehicle connects to the call center automatically and reports the vehicle location and vehicle information by data communication. The operator will connect to the vehicle and communicate with the occupant. Even if the occupant does not answer, the operator can notify emergency services.

*: Public Safety Answering Point

(b) Manual Emergency Call

(1) After pressing the manual (SOS) switch, the occupant can talk to an operator from the call center to seek assistance.

*: Public Safety Answering Point

(1) After the vehicle has been reported stolen to the police, the customer can contact the call center to begin the stolen vehicle locator process. The operator locates this vehicle by GPS and provides information to the police.

(d) Roadside Assistance Service

(1) Pressing the manual (SOS) switch will contract the call center, and a wide range of help, such as towing, flat tire, fuel delivery, etc. can be provided.

HINT:

The shape of the manual (SOS) switch shown in the illustration is an example, and may differ from that of an actual Toyota Prius vehicle.

VOICE GUIDANCE FUNCTION

HINT:

The system plays back the following voice prompts in the situations shown.

Voice Prompt	Usage Condition
Communication module failure detected, please contact your dealer.	When system detects LED failure (Red only), and another DTC is stored. Message is played every time ignition switch turned to ON while malfunction continues (while DTC is stored).
Connecting to the call center.	DCM activation start.
Communication module activation failed.	DCM activation fails for some reason.
Communication module activation complete.	DCM activation completed successfully.
If you continue to receive this message, contact your dealer.	Follows activation sequence.
Unable to connect to the call center.	-
Impact detected.	When DCM (telematics transceiver) receives collision detection signal.
Connecting to the emergency call center.	Call initiated to call center.
Unable to connect to the emergency call center.	DCM (telematics transceiver) cannot connect to emergency call center for some reason.
To cancel, please press the button again.	To end the call manually.
Emergency call canceled.	Confirmation that the call has been canceled.
The system will try again.	Could not connect to call center.
To activate, please press the button again within 5 seconds.	This voice prompt is instruction for activation.
Safety connect is not active.	Safety connect is not active for some reason.

INDICATOR CONTROL FUNCTION DURING DCM (TELEMATICS TRANSCEIVER) SELF CHECK MODE

HINT:

Every time after the ignition switch is turned ON, the DCM (telematics transceiver) will enter into a self check mode. The manual (SOS) switch red indicator will illuminate for 2 seconds and then turn off and then the manual (SOS) switch green indicator will illuminate and will stay on throughout normal operation. The following chart indicates the possible scenarios.

*1: The red and green indicators alternate turning on and off at 2-second intervals until the DCM (telematics transceiver) completes auto activation. System will automatically switch to shipping mode or active mode if auto activation is successful.
*2: If a call is in progress while the ignition switch off, the call will continue and the LED function will not change.

SWITCHING THE CONTRACT MODES

Contract Mode	Description
Shipping Mode	The Toyota Prius vehicle is being transported or service is canceled. Services do not operate.
Active Mode	Services can operate. However, the only services that operate are ones the customer are subscribed to.

Contract Mode

Description

Shipping Mode

The Toyota Prius vehicle is being transported or service is canceled.

Services do not operate.

Active Mode

Services can operate.

However, the only services that operate are ones the customer are subscribed to.

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use the following procedure to troubleshoot the safety connect system.
*: Use the GTS.

PROCEDURE

1.	Toyota Prius Vehicle BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK

HINT:

In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.

The following 5 items are important points for analysis:

What	Toyota Prius Vehicle model, system name
When	Date, time, occurrence frequency
Where	Road conditions
Under what conditions?	Driving conditions, weather conditions
How did it happen?	Problem symptoms

PRE-CHECK

(a) Measure the auxiliary battery voltage with the ignition switch off.

Standard voltage:

11 to 14 V

HINT:

If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

(b) Check the fuses and relays.

(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

4.	VERIFY CUSTOMER SUBSCRIPTION IS ACTIVE*

(a) Enter the VIN into Toyota Prius Vehicle Inquiry on GTS and verify subscription type and expiration date.

5.	CHECK CAN COMMUNICATION SYSTEM

(a) Check if CAN communication system DTCs output.

Click here

Result	Proceed to
CAN communication system DTCs are not output.	A
CAN communication system DTCs are output.	B

GO TO CAN COMMUNICATION SYSTEM

6.	CHECK FOR DTC*

(a) Refer to DTC Check/Clear.

Body Electrical > Telematics > Trouble Codes

Result	Proceed to
DTCs are not output.	A
DTCs are output.	B

GO TO DIAGNOSTIC TROUBLE CODE CHART

7.	CHECK Toyota Prius Vehicle CONTROL HISTORY*

(a) Check for vehicle control history and note any codes that are output.

Click here

Body Electrical > Telematics > Utility

Tester Display
Toyota Prius Vehicle Control History (RoB)

Result	Proceed to
No vehicle control history is output	A
Any Toyota Prius vehicle control history is output	B

GO TO VEHICLE CONTROL HISTORY

8.	PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

Result	Proceed to
Fault is not listed in Problem Symptoms Table	A
Fault is listed in Problem Symptoms Table	B

HINT:

If the symptom does not reoccur and no DTC is output, attempt to reproduce the symptoms.

Click here

GO TO STEP 10

9.	OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU

Click here

(b) Data List / Active Test

Click here

10.	REPAIR OR REPLACE

(a) Check if the DCM (telematics transceiver) has been replaced.

Result	Proceed to
The DCM (telematics transceiver) has been replaced	A
The DCM (telematics transceiver) has not been replaced	B

GO TO STEP 12

11.	PERFORM DCM ACTIVATION*

(a) Perform "DCM ACTIVATION".

Click here

12.	CONFIRMATION TEST

END

Dcm Operation History

DCM OPERATION HISTORY

HINT:

This function shows the telematics network status when the DCM (telematics transceiver) was operated. Use this when no DTC is present but this telematics system was unable to connect to the call center. This symptom may occur if cell phone signal strength is very weak.
This function is used to display operation history information and the time at which it was stored in the DCM (telematics transceiver).

DCM OPERATION HISTORY

(a) Enter the following menus: Body Electrical / Telematics / Utility / DCM Operation History

Body Electrical > Telematics > Utility

Tester Display
DCM Operation History

(b) Choose "Items" on the DCM Operation History Menu.

HINT:

When "Operation Code" is recorded, DCM Operation History is displayed on the GTS.
The displayed "Function" differs depending on the selected "Items".

(c) Refer to the following chart and check the system operation status displayed on the GTS. (The following chart is an example of the system operation status.)

System Operation Status Example

Occurrence Time*1	Operation Code*2	Function*3	Content*4	Roaming*5	Voice Call*6	Service Area*7	Electric Level*8
2017/12/31 12:40:50	0101	GNSS (Satellite)	Unreceived GNSS (Satellite) signal	ON	With	Out of Service	Level 0

Tester Display Description

Tester Display		Description		Range
*1	Occurrence time	Indicates date of the DCM (telematics transceiver) operation.		-
*2	Operation Code	Indicates the Operation Code.		-
*3	Function	Items	Indicates the function name.	-
		Common	GNSS (Satellite) Collision Detection Network Power Supply Control SMS Telematics PF Failure Due to Conflict Activate Function
		Emergency Call	Emergency Call Automatic Maintenance Manual Maintenance
*4	Content	Indicates the content.		-
*5	Roaming	Indicates whether roaming was used for the communication network.		ON or OFF
*6	Voice Call	Indicates whether there was a voice call.		With or Without
*7	Service Area	Indicates whether the Toyota Prius vehicle was in the service area.		Out of Service, Within Range, OFF the Air or Start up (LTE)
*8	Electric Level	Indicates the strength of the cellular signal received by the Toyota Prius vehicle.		Level 0, Level 1, Level 2, Level 3, Level 4, Level 5

Dcm Activation

DCM ACTIVATION

HINT:

If the DCM (telematics transceiver) has been replaced, it is necessary to perform the Register Vehicle Information procedure.

DCM ACTIVATION

(a) Enter the following menus: Body Electrical / Telematics / Utility / VIN Synchronization

Body Electrical > Telematics > Utility

Tester Display
VIN Synchronization

(b) According to the display on the GTS, read the IMEI, ICCID, software version and VIN.

(d) Turn the ignition switch ON and wait until only the manual (SOS) green indicator turns on.

HINT:

If only the manual (SOS) switch green indicator does not turn on even after 1 minutes elapse with the ignition switch ON, refer to "GREEN INDICATOR REMAINS OFF".

Click here

Acn Call End

ACN CALL END

ACN CALL END

This function terminates the ACN (Automatic Collision Notification) to the telematics provider. After a collision in which the DCM receives "Collision Detection Signal", the vehicle will send the emergency call notification to the telematics provider until the emergency call cancellation utility has been run, or the mobilephone battery (if equipped) is depleted. Use the emergency call cancellation utility to stop the ACN call.

NOTICE:

The mobilephone battery must not be replaced while an ACN call is in progress.

(a) Enter the following menus: Body Electrical / Telematics / Utility / Emergency Call Cancellation

Body Electrical > Telematics > Utility

Tester Display
Emergency Call Cancellation

(b) Follow the instructions on the GTS.

Customize Parameters

CUSTOMIZE PARAMETERS

CUSTOMIZE TELEMATICS SYSTEM

(a) Customizing with the GTS.

NOTICE:

When the customer requests a change in a function, first make sure that the function can be customized.
Be sure to make a note of the current settings before customizing.
When troubleshooting a function, first make sure that the function is set to the default setting.
When adjusting the telematics microphone volume, please verity sound volume with the call before taking the Toyota Prius vehicle back to customer.

(1) Enter the following menus: Customize Setting / Others.

(2) Select the setting by referring to the table below.

Others

Tester Display	Description	Default	Setting	ECU
Telematics Microphone Volume Adjust	Sets the telephone microphone assembly volume	6	$01:1(MIN),$02:2,$03:3,$04:4,$05:5,$06:6,$07:7,$08:8,$09:9,$0A:10,$0B:11(MAX)	DCM (telematics transceiver)
Telematics Speaker Volume Adjust	Sets the speaker volume	8	$01:1(MIN),$02:2,$03:3,$04:4,$05:5,$06:6,$07:7,$08:8,$09:9,$0A:10,$0B:11,$0C:12,$0D:13,$0E:14(MAX)	DCM (telematics transceiver)

Initialization

INITIALIZATION

RESET BACK-UP BATTERY CONDITION

HINT:

If the back-up battery (mobilephone battery) has been replaced, it is necessary to perform the Reset Backup Battery Condition procedure.

(a) Enter the following menus: Body Electrical / Telematics / Utility / Backup Battery Replacement Reset

Body Electrical > Telematics > Utility

Tester Display
Backup Battery Replacement Reset

(b) According to the display on the GTS, perform Backup Battery Replacement Reset to reset the mobilephone battery replacement flag.

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
When a symptom indicates that a service is malfunctioning, use the GTS to check whether the service subscription is active.
Click here

Voice Guidance

Symptom	Suspected Area	Link
"Communication Module failure detected, please contact your dealer" message is played	Diagnostic Trouble Code Chart (Red Indicator has failed and cannot indicate a failure)
"Communication Module Activation Failed" message is played	Contact Telematics Service Provider to verify any network problems	-
	Wait for a while, then move to different location and retry (try to find location with better signal reception)	-
	Diagnostic Trouble Code Chart
"Unable to Connect the Emergency Call Center" or "Unable to Connect to the Call Center" message is played	Wait for a while, then move to different location and retry (try to find location with better signal reception)	-
	Perform Toyota Prius Vehicle Inquiry on GTS and verify subscription status	-
	Refer to UNABLE TO CONNECT TO CALL CENTER
"Safety Connect is not active" message is played	Perform Toyota Prius Vehicle Inquiry on GTS and verify subscription status	-
"Safety Connect is not active" message is played	Explain to the customer that the system is in shipping mode, and confirm whether or not they would like to change to active mode	-

Indicator Condition

Symptom	Suspected Area	Link
Green indicator abnormal (Remains OFF)	Refer to GREEN INDICATOR REMAINS OFF
Red indicator abnormal (Remains ON)	Refer to RED INDICATOR REMAINS ON
Illumination on the manual (SOS) switch panel does not turn on	Proceed to "Emergency Call Switch Illumination Circuit"

Emergency Call Function

Symptom	Suspected Area	Link
The operator's voice is wavering/choppy during the emergency call	If the customize volume is set to a value larger than the default, set the value to that of the default or lower.

Terminals Of Ecu

TERMINALS OF ECU

CHECK DCM (TELEMATICS TRANSCEIVER)

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
K9-1 ( B) - K9-20 (E)	Power source ( B)	Always	11 to 14 V
K9-3 (SIG-) - K9-20 (E)	Ground	Always	Below 1 V
K9-4 (IND1) - K9-20 (E)	Manual (SOS) switch red indicator illumination signal	For 2 seconds after turning the ignition switch ON	1 to 8.5 V
K9-4 (IND1) - K9-20 (E)	Manual (SOS) switch red indicator illumination signal	Ignition switch off	Below 1 V
K9-5 (MCVD) - K9-20 (E)	Telephone microphone assembly power supply	Ignition switch ON	7.5 to 8.5 V
K9-5 (MCVD) - K9-20 (E)	Telephone microphone assembly power supply	Ignition switch off	Below 1 V
K9-6 (MCI ) - K9-20 (E)	Receive microphone voice signal	Voice being input to telephone microphone assembly	A waveform synchronized with microphone voice signal is input
K9-7 (MCI-) - K9-20 (E)	Receive microphone voice signal	Always	Below 1 V
K9-13 (GSW) - K9-20 (E)	Collision detection signal	Ignition switch ON	Pulse generation (Refer to waveform 1)
K9-19 (IG2) - K9-20 (E)	Power source (IG)	Ignition switch ON	11 to 14 V
K9-19 (IG2) - K9-20 (E)	Power source (IG)	Ignition switch off	Below 1 V
K9-20 (E) - Body ground	Ground	Always	Below 1 Ω
K9-21 (SIG1) - K9-3 (SIG-)	Manual (SOS) switch button condition signal	Manual (SOS) switch not pressed	1.3 to 1.9 V
K9-21 (SIG1) - K9-3 (SIG-)	Manual (SOS) switch button condition signal	Manual (SOS) switch pressed	0.5 to 0.8 V
K9-22 (IND2) - K9-20 (E)	Manual (SOS) switch green indicator illumination signal	For 2 seconds after turning the ignition switch ON	1 to 8.5 V
K9-22 (IND2) - K9-20 (E)	Manual (SOS) switch green indicator illumination signal	Ignition switch off	Below 1 V
K9-23 (SGND) - K9-20 (E)	Shield ground	Always	Below 1 Ω
K9-25 (CANP)	CAN communication signal	-	-
K9-26 (CANN)	CAN communication signal	-	-

(a) Oscilloscope waveform:

(1) Waveform 1

Item	Condition
Tester connection	K9-13 (GSW) - K9-20 (E)
Tool setting	5.0 V/DIV., 20 ms/DIV.
Toyota Prius Vehicle condition	Ignition switch ON

Diagnosis System

DIAGNOSIS SYSTEM

DESCRIPTION

(a) The DCM (telematics transceiver) control the vehicle safety connect system functions. Safety connect system data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3). In some cases, a malfunction may be occurring in the safety connect system. When the system seems to be malfunctioning, use the GTS to check for malfunctions and perform repairs.

CHECK DLC3

(a) Check the DLC3.

Click here

INSPECT AUXILIARY BATTERY

(a) Measure the auxiliary battery voltage with the ignition switch off.

Standard voltage:

11 to 14 V

HINT:

If the voltage is below 11 V, recharge or replace the auxiliary battery.

CHECK INDICATOR

(a) When a malfunction is detected in the safety connect system, the manual (SOS) switch red indicator on the manual (SOS) switch illuminates to inform the driver of the malfunction.

Click here

Data List / Active Test

DATA LIST / ACTIVE TEST

DATA LIST

NOTICE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

HINT:

Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

(a) According to the display on the GTS, read the "Data List".

Body Electrical > Telematics > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Total Distance Traveled	Total distance traveled	Min.: 0, Max.: 16777215	-	-
Total Distance Traveled - Unit	Total distance traveled unit	-, km or mile	-	-
IMEI	IMEI of DCM (telematics transceiver)	15 digits	-	-
Software Version High	Software version of DCM (telematics transceiver) (10 digits from left)	10 digits	-	-
Software Version Low	Software version of DCM (telematics transceiver) (10 digits from right)	10 digits	-	-
MSISDN	MSISDN of DCM (telematics transceiver)	16 digits	-	-
PLMN(MCC)	MCC of DCM (telematics transceiver)	3 digits	-	-
PLMN(MNC)	MNC of DCM (telematics transceiver)	3 digits	-	-
ICCID(High)	ICCID of DCM (telematics transceiver) (10 digits from left)	10 digits	-	-
ICCID(Low)	ICCID of DCM (telematics transceiver) (10 digits from right)	10 digits	-	-
Communication Status with TSC	Communication status with Service Center	Incomplete or Complete	Complete	-
Telematics Activation Status	DCM (telematics transceiver) activation status	Shipping or Active	Shipping: Not activated Active: Activated	-
Remote Toyota Prius Vehicle Tracking	Display "Remote Vehicle Tracking" function enabled/disabled status	Disable or Enable	Disable: Following function disabled Enable: Following function enabled	-
Brand TOYOTA	Bland name	No or Yes	No: Except TOYOTA Brand YES: TOYOTA Brand	-
OTA Reprogramming	Display "OTA Reprogramming" function enabled/disabled status	Disable or Enable	Disable: Following function disabled Enable: Following function enabled	-
HELPNET Function	Display "Helpnet" function enabled/disabled status	Disable or Enable	Disable: Following function disabled Enable: Following function enabled	-
Stolen Toyota Prius Vehicle Tracking	Display "Stolen Vehicle Tracking" function enabled/disabled status	Disable or Enable	Disable: Following function disabled Enable: Following function enabled	-
Automatic Collision Notification Function	Display "Automatics Collision Notification" function enabled/disabled status	Disable or Enable	Disable: Following function disabled Enable: Following function enabled	-
Manual Emergency Call Function	Display "Manual Emergency Call" function enabled/disabled status	Disable or Enable	Disable: Following function disabled Enable: Following function enabled	-
Wireless Health Check Function	Display "Wireless Health Check" function enabled/disabled status	Disable or Enable	Disable: Following function disabled Enable: Following function enabled	-
Stolen Toyota Prius Vehicle Tracking Function	Display "Stolen Vehicle Tracking" function enabled/disabled status	Disable or Enable	Disable: Following function disabled Enable: Following function enabled	-
Telematics Microphone Volume Adjust	Setting of Telematics Microphone Volume Adjust	Min.: 1, Max.:11	Displays customize setting of Telematics Microphone Volume Adjust	-
Telematics Speaker Volume Adjust	Setting of Telematics Speaker Volume Adjust	Min.: 1, Max.:14	Displays customize setting of Telematics Speaker Volume Adjust	-
Green Indicator	The green indicator light on the emergency call switch panel illumination status	Lighting OFF, Nighttime Brightness-Low, Nighttime Brightness-Middle, Nighttime Brightness-High or Daytime Brightness	-	-
Red Indicator	The red indicator light on the emergency call switch panel illumination status	Lighting OFF, Nighttime Brightness-Low, Nighttime Brightness-Middle, Nighttime Brightness-High or Daytime Brightness	-	-
Beep	Beep volume	Min.: Vol01, Max.:Vol14, OFF	-	-

ACTIVE TEST

HINT:

Using the GTS to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

(a) According to the display on the GTS, perform the Active Test.

Body Electrical > Telematics > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Green Indicator	Operate Emergency Call Switch Green Indicator	Lighting OFF, Nighttime Brightness - Low, Nighttime Brightness - Middle, Nighttime Brightness - High or Daytime Brightness	Operate with ignition switch ON and the Toyota Prius vehicle stopped.
Red Indicator	Operate Emergency Call Switch Red Indicator	Lighting OFF, Nighttime Brightness - Low, Nighttime Brightness - Middle, Nighttime Brightness - High or Daytime Brightness	Operate with ignition switch ON and the Toyota Prius vehicle stopped.
Beep	Operate speakers	Min.: Vol01, Max.: Vol14	Operate with ignition switch ON and the vehicle stopped.

Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Safety Connect System

DTC No.	Detection Item	DTC Output from	Priority
B153711	Telephone Sub Antenna Circuit Short to Ground	Telematics	A
B153713	Telephone Sub Antenna Circuit Open	Telematics	A
B157011	Indicator (Red) Circuit Short to Ground	Telematics	A
B157013	Indicator (Red) Circuit Open	Telematics	A
B157111	Indicator (Green) Circuit Short to Ground	Telematics	A
B157113	Indicator (Green) Circuit Open	Telematics	A
B157213	Microphone Circuit Open	Telematics	A
B15A804	DCM System Internal Failure	Telematics	A
B15C111	GNSS Antenna Circuit Short to Ground	Telematics	A
B15C113	GNSS Antenna Circuit Open	Telematics	A
B15C464	Airbag Signal Signal Plausibility Failure	Telematics	B
B15C511	Emergency Call Switch Circuit Short to Ground	Telematics	A
B15C513	Emergency Call Switch Circuit Open	Telematics	A
B15CB11	Telephone Main Antenna Circuit Short to Ground	Telematics	A
B15CB13	Telephone Main Antenna Circuit Open	Telematics	A
B15CC49	Backup Battery Internal Electronic Failure	Telematics	A

Vehicle Control History

VEHICLE CONTROL HISTORY

NOTICE:

Make sure to record any output Vehicle Control History codes before clearing them and checking the Vehicle Control History again.

CHECK VEHICLE CONTROL HISTORY

NOTICE:

Depending on the parts that are replaced during Toyota Prius vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Safety Connect System.

Click here

(a) In accordance with the display of the GTS, check the vehicle control history (RoB).

Body Electrical > Telematics > Utility

Tester Display
Toyota Prius Vehicle Control History (RoB)

Vehicle Control History Item

Code	Tester Display	Description	Diagnostic Note
X2210	Life Cycle of DCM Backup Battery	When the system detects that the mobilephone battery has reached the end of its lifespan.	The manual (SOS) switch red indicator illuminates Replace mobilephone battery NOTICE: After replacing the mobilephone battery, perform initialization. After performing work, perform "CLEAR Toyota Prius Vehicle CONTROL HISTORY" to turn off the manual (SOS) switch red indicator.
X2211	Low DCM Backup Battery Charge	When the mobilephone battery charge is low.	-
X2601	Software Inconsistency with ENG/HV Control Module	The VIN number received via CAN communication does not match that stored in the DCM.	The manual (SOS) switch red indicator illuminates Perform VIN Synchronization
X2213	Emergency Call Switch Stuck On	The manual (SOS) switch is on for 5 minutes or more.	The manual (SOS) switch red indicator illuminates Replace map light assembly
X2214	Communication Blackout from Power Distribution Controller ECU	Lost Communication with ECM.	Check CAN Communication System
X2212	Diagnostics Communication Flow Failure	Diagnostics communication flow failure (ID, Mode/SID difference).	-
X2215	Non Approval of the Reprograming	User did not approve software update.	-
X2216	Failure of the Reprogramming	Software writing failed.	-
X2217	Inconsistent Startup Software	Software writing succeeded, but started software does not match package.	-
X21D4	Reprograming Telematics ECU by OTA Start/Finish	The software update of DCM by OTA is started and completed with success.	-

CLEAR Toyota Prius Vehicle CONTROL HISTORY

NOTICE:

By performing this procedure, all stored Vehicle Control History will be cleared.

(a) Using the GTS, select the vehicle control history (Rob).

Body Electrical > Telematics > Utility

Tester Display
Toyota Prius Vehicle Control History (RoB)

(b) According to the display on the GTS, clear the Vehicle Control History (RoB).

Indicator (Red) Circuit Short to Ground (B157011,B157013)

DESCRIPTION

This DTC is stored when the DCM (telematics transceiver) detects an open or short in the manual (SOS) switch red indicator circuit of the manual (SOS) switch.

The manual (SOS) switch red indicator illuminates for 2 seconds and goes off when the ignition switch is turned to ON. If a malfunction in the safety connect system is detected, the manual (SOS) switch red indicator will illuminate.

However, the manual (SOS) switch red indicator may not illuminate when this DTC is stored.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from	Priority
B157011	Indicator (Red) Circuit Short to Ground	Manual (SOS) switch red indicator impedance (Ω) is lower than the malfunction threshold for 10 seconds or more when the ignition switch is ON	DCM (telematics transceiver) Map light assembly (manual (SOS) switch) Harness or connector	Telematics	A
B157013	Indicator (Red) Circuit Open	Manual (SOS) switch red indicator impedance (Ω) is higher than the malfunction threshold for 10 seconds or more when the ignition switch is ON	DCM (telematics transceiver) Map light assembly (manual (SOS) switch) Harness or connector	Telematics	A

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Click here

HINT:

If DTC B157011 or B157013 is stored, the manual (SOS) switch red indicator may not illuminate when another DTC is stored.

PROCEDURE

CLEAR DTC

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

(b) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

CHECK DTC

Pre-procedure1

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

Procedure1

(b) Check for DTCs and check that no DTCs are output.

Body Electrical > Telematics > Trouble Codes

OK:

No DTCs are output.

Result	Proceed to
B157011 or B157013 is not output	A
B157011 or B157013 is output	B

Post-procedure1

USE SIMULATION METHOD TO CHECK

3.	INSPECT MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH) (RED INDICATOR)

Pre-procedure1

(a) Remove the map light assembly (manual (SOS) switch).

HINT:

Click here

(b) Connect 2 dry-cell batteries (1.5 V each) in series.

(c) Connect a positive ( ) lead from the batteries to terminal 1 (IND1) and a negative (-) lead to terminal 10 (GND3) of the map light assembly (manual (SOS) switch) connector.

*a	Component without harness connected (Map Light Assembly (Manual (SOS) Switch))

Procedure1

(d) Check if the manual (SOS) switch red indicator illuminates.

OK:

Manual (SOS) switch red indicator illuminates.

Post-procedure1

(e) None

REPLACE MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH)

4.	CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH))

Pre-procedure1

(a) Disconnect the K9 DCM (telematics transceiver) connector.

(b) Disconnect the U1 map light assembly (manual (SOS) switch) connector.

Procedure1

Standard Resistance:

Click Location & Routing(K9,U1) Click Connector(K9) Click Connector(U1)

Tester Connection	Condition	Specified Condition	Result
K9-4 (IND1) - U1-1 (IND1)	Always	Below 1 Ω	Ω
K9-4 (IND1) or U1-1 (IND1) - Body ground	Always	10 kΩ or higher	kΩ
K9-3 (SIG-) - U1-10 (GND3)	Always	Below 1 Ω	Ω
K9-3 (SIG-) or U1-10 (GND3) - Body ground	Always	10 kΩ or higher	kΩ

Post-procedure1

(d) None

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

HINT:

Click here

NOTICE:

The ignition switch must be off.
Do not exchange the DCM (telematics transceiver) with one from another Toyota Prius vehicle.

PERFORM DCM ACTIVATION

Microphone Circuit Open (B157213)

DESCRIPTION

This DTC is stored when the DCM (telematics transceiver) detects a malfunction in the telephone microphone assembly circuit.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from	Priority
B157213	Microphone Circuit Open	Current at terminal MCVD is lower than the malfunction threshold for 10 seconds or more while the ignition switch is ON	DCM (telematics transceiver) Telephone microphone assembly LH Harness or connector	Telematics	A

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Click here

PROCEDURE

CLEAR DTC

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

(b) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

CHECK DTC

Pre-procedure1

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

Procedure1

(b) Check for DTCs and check that no DTCs are output.

Body Electrical > Telematics > Trouble Codes

OK:

No DTCs are output.

Result	Proceed to
B157213 is not output	A
B157213 is output	B

Post-procedure1

USE SIMULATION METHOD TO CHECK

3.	CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - TELEPHONE MICROPHONE ASSEMBLY LH)

Pre-procedure1

(a) Disconnect the K9 DCM (telematics transceiver) connector.

(b) Disconnect the U15 telephone microphone assembly LH connector.

Procedure1

Standard Resistance:

Click Location & Routing(K9,U15) Click Connector(K9) Click Connector(U15)

Tester Connection	Condition	Specified Condition	Result
K9-5 (MCVD) - U15-1 (MAC1)	Always	Below 1 Ω	Ω
K9-6 (MCI ) - U15-2 (MO1 )	Always	Below 1 Ω	Ω
K9-7 (MCI-) - U15-4 (MO1-)	Always	Below 1 Ω	Ω
K9-23 (SGND) - Body ground	Always	10 kΩ or higher	kΩ
K9-5 (MCVD) or U15-1 (MAC1) - Body ground	Always	10 kΩ or higher	kΩ
K9-6 (MCI ) or U15-2 (MO1 ) - Body ground	Always	10 kΩ or higher	kΩ
K9-7 (MCI-) or U15-4 (MO1-) - Body ground	Always	10 kΩ or higher	kΩ

Post-procedure1

(d) None

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	CHECK DCM (TELEMATICS TRANSCEIVER) (TELEPHONE MICROPHONE ASSEMBLY LH POWER SOURCE)

Pre-procedure1

(a) Remove the telephone microphone assembly LH but do not disconnect the connectors.

HINT:

Click here

Procedure1

(b) Measure the voltage and resistance according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(U15) Click Connector(U15)

Tester Connection	Switch Condition	Specified Condition	Result
U15-1 (MAC1) - Body ground	Ignition switch ON	7.5 to 8.5 V	V

Standard Resistance:

Click Location & Routing(U15) Click Connector(U15)

Tester Connection	Condition	Specified Condition	Result
U15-4 (MO1-) - Body ground	Always	Below 1 Ω	Ω

Result:

Proceed to
OK
NG

*a	Component with harness connected (Telephone Microphone Assembly LH)

Post-procedure1

REPLACE TELEPHONE MICROPHONE ASSEMBLY LH

5.	REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

HINT:

Click here

NOTICE:

The ignition switch must be off.
Do not exchange the DCM (telematics transceiver) with one from another Toyota Prius vehicle.

PERFORM DCM ACTIVATION

DCM System Internal Failure (B15A804)

DESCRIPTION

This DTC is stored when an internal circuit malfunction is detected by the DCM (telematics transceiver) self check.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from	Priority
B15A804	DCM System Internal Failure	DCM (telematics transceiver) internal malfunction	DCM (telematics transceiver)	Telematics	A

CAUTION / NOTICE / HINT

NOTICE:

Regardless of whether DTC B15A804 has been output as a present or history DTC, the DCM (telematics transceiver) should be replaced.
Depending on the parts that are replaced during Toyota Prius vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Safety Connect System.
Click here

PROCEDURE

1.	REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

HINT:

Click here

NOTICE:

The ignition switch must be off.
Do not exchange the DCM (telematics transceiver) with one from another Toyota Prius vehicle.

PERFORM DCM ACTIVATION

GNSS Antenna Circuit Short to Ground (B15C111,B15C113)

DESCRIPTION

These DTCs are stored when a malfunction occurs in the telephone and GPS antenna assembly (for Front Side) circuit.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

Priority

B15C111

GNSS Antenna Circuit Short to Ground

Current to the GNSS antenna is lower than the malfunction threshold for 10 seconds or more when the ignition switch is ON

(Short circuit)

DCM (telematics transceiver)
Telephone and GPS antenna assembly (for Front Side)
Telephone and GPS antenna cord (Antenna cord sub-assembly (for Type A))
Telephone and GPS antenna cord (Antenna cord sub-assembly (for Type B))

Telematics

B15C113

GNSS Antenna Circuit Open

Current to the GNSS antenna is higher than the malfunction threshold for 10 seconds or more when the ignition switch is ON

(Open circuit)

DCM (telematics transceiver)
Telephone and GPS antenna assembly (for Front Side)
Telephone and GPS antenna cord (Antenna cord sub-assembly (for Type A))
Telephone and GPS antenna cord (Antenna cord sub-assembly (for Type B))

Telematics

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Click here

HINT:

Refer to "PARTS LOCATION" for the installation location of telephone and GPS antenna cord.

Click here

PROCEDURE

CLEAR DTC

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

(b) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

CHECK DTC

Pre-procedure1

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

Procedure1

(b) Check for DTCs and check that no DTCs are output.

Body Electrical > Telematics > Trouble Codes

OK:

No DTCs are output.

Result	Proceed to
B15C111 or B15C113 is not output	A
B15C111 or B15C113 is output	B

Post-procedure1

USE SIMULATION METHOD TO CHECK

3.	INSPECT TELEPHONE AND GPS ANTENNA (for Front Side)

Pre-procedure1

(a) Remove the telephone and GPS antenna (for Front Side).

HINT:

Click here

Procedure1

(b) Current consumption check:

(1) Measure the current consumption according to the value(s) in the table below.

Standard Current:

Tester Connection	Condition	Specified Condition	Result
3 (core) - 3a (shield)	4.2 to 5.0 V applied between terminals 3 and 3a	10 to 30 mA	mA

NOTICE:

Do not apply 6 V or more between terminals 3 and 3a.

HINT:

If a stable power supply is not available, connect 4 nickel-metal hydride batteries (1.2 V each) or equivalent in series.

Result:

Proceed to
OK
NG

Component without harness connected

(Telephone and GPS Antenna Assembly (for Front Side))

Voltage Applied between Terminals

Post-procedure1

REPLACE TELEPHONE AND GPS ANTENNA (for Front Side)

4.	INSPECT TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type A))

Pre-procedure1

(a) Disconnect the D telephone and GPS antenna cord (antenna cord sub-assembly (for Type A)) connector.

*a	Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly (for Type A)))

(b) Disconnect the F telephone and GPS antenna cord (antenna cord sub-assembly (for Type A)) connector.

*a	Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly (for Type A)))

Procedure1

Standard Resistance:

Tester Connection	Condition	Specified Condition	Result
D-3 - F-5	Always	Below 1 Ω	Ω
D-3 or F-5 - Body ground	Always	10 kΩ or higher	kΩ
D-3a - F-5a	Always	Below 1 Ω	Ω
D-3a or F-5a - Body ground	Always	10 kΩ or higher	kΩ

Post-procedure1

(d) None

REPLACE TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type A))

5.	INSPECT TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type B))

Pre-procedure1

(a) Disconnect the E telephone and GPS antenna cord (antenna cord sub-assembly (for Type B)) connector.

*a	Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly (for Type B)))

(b) Disconnect the B telephone and GPS antenna cord (antenna cord sub-assembly (for Type B)) connector.

*a	Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly (for Type B)))

Procedure1

Standard Resistance:

Tester Connection	Condition	Specified Condition	Result
E-5 - B-1	Always	Below 1 Ω	Ω
E-5 or B-1 - Body ground	Always	10 kΩ or higher	kΩ
E-5a - B-1a	Always	Below 1 Ω	Ω
E-5a or B-1a - Body ground	Always	10 kΩ or higher	kΩ

Post-procedure1

(d) None

REPLACE TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type B))

6.	REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

HINT:

Click here

NOTICE:

The ignition switch must be off.
Do not exchange the DCM (telematics transceiver) with one from another Toyota Prius vehicle.

PERFORM DCM ACTIVATION

Airbag Signal Signal Plausibility Failure (B15C464)

DESCRIPTION

If the DCM (telematics transceiver) detects an error in communication between the DCM (telematics transceiver) and the airbag sensor assembly as a result of the DCM (telematics transceiver) self check, this DTC will be stored.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from	Priority
B15C464	Airbag Signal Signal Plausibility Failure	DCM (telematics transceiver) detects an error in signals from airbag sensor assembly when ignition switch is ON.	Airbag system Harness or connector Airbag ECU assembly DCM (telematics transceiver)	Telematics	B

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The Toyota Prius vehicle is equipped with an SRS (Supplemental Restraint System) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the Precaution in the SRS.
Click here
After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
Click here

HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC (AIRBAG SYSTEM)

Pre-procedure1

(a) Turn the ignition switch to ON, and wait for at least 60 seconds.

(b) Clear the DTCs.

Body Electrical > SRS Airbag > Clear DTCs

Procedure1

Body Electrical > SRS Airbag > Trouble Codes

OK:

No DTCs are output.

Result	Proceed to
DTCs are not output	A
DTCs are output	B

Post-procedure1

(d) None

GO TO AIRBAG SYSTEM

CLEAR DTC

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

(b) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

CHECK DTC

Pre-procedure1

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

Procedure1

(b) Check for DTCs and check that no DTCs are output.

Body Electrical > Telematics > Trouble Codes

OK:

No DTCs are output.

Result	Proceed to
B15C464 is not output	A
B15C464 is output	B

Post-procedure1

USE SIMULATION METHOD TO CHECK

4.	CHECK DCM (TELEMATICS TRANSCEIVER) (GSW SIGNAL)

Pre-procedure1

(a) Remove the DCM (telematics transceiver) but do not disconnect the connectors.

HINT:

Click here

Procedure1

(b) Check the input waveform.

(1) Check the signal waveform according to the condition(s) in the table below. (Check the waveform from the back of the wire harness connector of the DCM (telematics transceiver) while the airbag sensor assembly connectors are connected.)

Reference Waveform:

Item	Condition
Tester connection	K9-13 (GSW) - Body ground
Tool setting	5.0 V/DIV., 20 ms/DIV.
Toyota Prius Vehicle condition	Ignition switch ON

OK:

The waveform is similar to that shown in the illustration.

Result:

Proceed to
OK
NG

*a	Component with harness connected (DCM (Telematics Transceiver))

Post-procedure1

GO TO STEP 6

5.	REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

HINT:

Click here

NOTICE:

The ignition switch must be off.
Do not exchange the DCM (telematics transceiver) with one from another Toyota Prius vehicle.

PERFORM DCM ACTIVATION

6.	CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - AIRBAG ECU ASSEMBLY)

Pre-procedure1

(a) Disconnect the K9 DCM (telematics transceiver) connector.

(b) Disconnect the K1 airbag ECU assembly connector.

Procedure1

Standard Resistance:

Click Location & Routing(K9,K1) Click Connector(K9) Click Connector(K1)

Tester Connection	Condition	Specified Condition	Result
K9-13 (GSW) - K1-23 (GSW3)	Always	Below 1 Ω	Ω
K9-13 (GSW) or K1-23 (GSW3) - Body ground	Always	10 kΩ or higher	kΩ

Post-procedure1

(d) None

REPLACE AIRBAG ECU ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

Emergency Call Switch Circuit Short to Ground (B15C511,B15C513)

DESCRIPTION

If the DCM (telematics transceiver) detects an error in the communication between the DCM (telematics transceiver) and the map light assembly (manual (SOS) switch) as a result of the DCM (telematics transceiver) self check, this DTC will be stored.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from	Priority
B15C511	Emergency Call Switch Circuit Short to Ground	Manual (SOS) switch impedance (Ω) is lower than the malfunction threshold for 10 seconds or more when the ignition switch is ON	Map light assembly (manual (SOS) switch) Harness or connector DCM (telematics transceiver)	Telematics	A
B15C513	Emergency Call Switch Circuit Open	Manual (SOS) switch impedance (Ω) is higher than the malfunction threshold for 10 seconds or more when the ignition switch is ON	Map light assembly (manual (SOS) switch) Harness or connector DCM (telematics transceiver)	Telematics	A

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Click here

PROCEDURE

CLEAR DTC

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

(b) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

CHECK DTC

Pre-procedure1

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

Procedure1

(b) Check for DTCs and check that no DTCs are output.

Body Electrical > Telematics > Trouble Codes

OK:

No DTCs are output.

Result	Proceed to
B15C511 or B15C513 is not output	A
B15C511 or B15C513 is output	B

Post-procedure1

USE SIMULATION METHOD TO CHECK

3.	INSPECT MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH)

Pre-procedure1

(a) Remove the map light assembly (manual (SOS) switch).

HINT:

Click here

Procedure1

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition	Result
12 (SIG1) - 10 (GND3)	Manual (SOS) switch not operated	410 to 414 Ω	Ω
12 (SIG1) - 10 (GND3)	Manual (SOS) switch operated	81 to 83 Ω	Ω

Result:

Proceed to
OK
NG

*a	Component without harness connected (Map Light Assembly (Manual (SOS) Switch))

Post-procedure1

REPLACE MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH)

4.	CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH))

Pre-procedure1

(a) Disconnect the K9 DCM (telematics transceiver) connector.

(b) Disconnect the U1 map light assembly (manual (SOS) switch) connector.

Procedure1

Standard Resistance:

Click Location & Routing(K9,U1) Click Connector(K9) Click Connector(U1)

Tester Connection	Condition	Specified Condition	Result
K9-21 (SIG1) - U1-12 (SIG1)	Always	Below 1 Ω	Ω
K9-3 (SIG-) - U1-10 (GND3)	Always	Below 1 Ω	Ω
K9-21 (SIG1) or U1-12 (SIG1) - Body ground	Always	10 kΩ or higher	kΩ
K9-3 (SIG-) or U1-10 (GND3) - Body ground	Always	10 kΩ or higher	kΩ

Post-procedure1

(d) None

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

HINT:

Click here

NOTICE:

The ignition switch must be off.
Do not exchange the DCM (telematics transceiver) with one from another Toyota Prius vehicle.

PERFORM DCM ACTIVATION

Telephone Main Antenna Circuit Short to Ground (B15CB11,B15CB13)

DESCRIPTION

This DTC is stored when the DCM (telematics transceiver) detects an open or a short in the telephone antenna (main) circuit.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from	Priority
B15CB11	Telephone Main Antenna Circuit Short to Ground	Telephone antenna (main) impedance (Ω) is lower than the malfunction threshold for 10 seconds or more when the ignition switch is ON (Short circuit)	Telephone and GPS antenna assembly (for Roof Side) Telephone and GPS antenna cord (Antenna cord sub-assembly (for Type C)) Telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) Telephone and GPS antenna cord (Antenna cord sub-assembly (for Type A)) Telephone and GPS antenna cord (Antenna cord sub-assembly (for Type B)) DCM (telematics transceiver)	Telematics	A
B15CB13	Telephone Main Antenna Circuit Open	Telephone antenna (main) impedance (Ω) is higher than the malfunction threshold for 10 seconds or more when the ignition switch is ON (Open circuit)	Telephone and GPS antenna assembly (for Roof Side) Telephone and GPS antenna cord (Antenna cord sub-assembly (for Type C)) Telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) Telephone and GPS antenna cord (Antenna cord sub-assembly (for Type A)) Telephone and GPS antenna cord (Antenna cord sub-assembly (for Type B)) DCM (telematics transceiver)	Telematics	A

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Click here

HINT:

Refer to "PARTS LOCATION" for the installation location of telephone and GPS antenna cord.

Click here

PROCEDURE

CLEAR DTC

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

(b) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

CHECK DTC

Pre-procedure1

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

Procedure1

(b) Check for DTCs and check that no DTCs are output.

Body Electrical > Telematics > Trouble Codes

OK:

No DTCs are output.

Result	Proceed to
B15CB11 or B15CB13 is not output	A
B15CB11 or B15CB13 is output	B

Post-procedure1

USE SIMULATION METHOD TO CHECK

3.	INSPECT TELEPHONE AND GPS ANTENNA ASSEMBLY (for Roof Side)

Pre-procedure1

(a) Disconnect the telephone and GPS antenna assembly (for Roof Side) connector.

*a	Component without harness connected (Telephone and GPS Antenna Assembly (for Roof Side))

Procedure1

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition	Result
4 - 4a	Always	9 to 11 kΩ	kΩ

Post-procedure1

REPLACE TELEPHONE AND GPS ANTENNA ASSEMBLY (for Roof Side)

4.	INSPECT TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (Type C))

Pre-procedure1

(a) Disconnect the N telephone and GPS antenna cord (antenna cord sub-assembly (for Type C)) connector.

*a	Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly (for Type C)))

(b) Disconnect the J telephone and GPS antenna cord (antenna cord sub-assembly (for Type C)) connector.

*a	Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly (for Type C)))

Procedure1

Standard Resistance:

Tester Connection	Condition	Specified Condition	Result
N-4 - J-3	Always	Below 1 Ω	Ω
N-4 or J-3 - Body ground	Always	10 kΩ or higher	kΩ
N-4a - J-3a	Always	Below 1 Ω	Ω
N-4a or J-3a - Body ground	Always	10 kΩ or higher	kΩ

Post-procedure1

(d) None

REPLACE TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type C))

5.	INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 3 ANTENNA CORD SUB-ASSEMBLY)

Pre-procedure1

(a) Disconnect the I telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) connector.

*a	Component without harness connected (Telephone and GPS Antenna Cord (No. 3 Antenna Cord Sub-assembly))

(b) Disconnect the H telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) connector.

*a	Component without harness connected (Telephone and GPS Antenna Cord (No. 3 Antenna Cord Sub-assembly))

Procedure1

Standard Resistance:

Tester Connection	Condition	Specified Condition	Result
I-3 - H-1	Always	Below 1 Ω	Ω
I-3 or H-1 - Body ground	Always	10 kΩ or higher	kΩ
I-3a - H-1a	Always	Below 1 Ω	Ω
I-3a or H-1a - Body ground	Always	10 kΩ or higher	kΩ

Post-procedure1

(d) None

REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 3 ANTENNA CORD SUB-ASSEMBLY)

6.	INSPECT TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type A))

Pre-procedure1

(a) Disconnect the G telephone and GPS antenna cord (antenna cord sub-assembly (for Type A)) connector.

*a	Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly (for Type A)))

(b) Disconnect the F telephone and GPS antenna cord (antenna cord sub-assembly for Type A)) connector.

*a	Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly (for Type A)))

Procedure1

Standard Resistance:

Tester Connection	Condition	Specified Condition	Result
G-1 - F-4	Always	Below 1 Ω	Ω
G-1 or F-4- Body ground	Always	10 kΩ or higher	kΩ
G-1a - F-4a	Always	Below 1 Ω	Ω
G-1a or F-4a - Body ground	Always	10 kΩ or higher	kΩ

Post-procedure1

(d) None

REPLACE TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type A))

7.	INSPECT TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type B))

Pre-procedure1

(a) Disconnect the E telephone and GPS antenna cord (antenna cord sub-assembly (for Type B)) connector.

*a	Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly (for Type B)))

(b) Disconnect the C telephone and GPS antenna cord (antenna cord sub-assembly (for Type B)) connector.

*a	Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly (for Type B)))

Procedure1

Standard Resistance:

Tester Connection	Condition	Specified Condition	Result
E-4 - C-1	Always	Below 1 Ω	Ω
E-4 or C-1- Body ground	Always	10 kΩ or higher	kΩ
E-4a - C-1a	Always	Below 1 Ω	Ω
E-4a or C-1a - Body ground	Always	10 kΩ or higher	kΩ

Post-procedure1

(d) None

REPLACE TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type B))

8.	REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

HINT:

Click here

NOTICE:

The ignition switch must be off.
Do not swap the DCM (telematics transceiver) with one from another Toyota Prius vehicle.

PERFORM DCM ACTIVATION

Backup Battery Internal Electronic Failure (B15CC49)

DESCRIPTION

This DTC is set when the DCM (telematics transceiver) detects one of the following:

The mobilephone battery voltage drops or the mobilephone battery malfunctions.
The mobilephone battery temperature is (temporarily) high.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from	Priority
B15CC49	Backup Battery Internal Electronic Failure	Mobilephone battery malfunction	Mobilephone battery DCM (telematics transceiver)	Telematics	A

CAUTION / NOTICE / HINT

NOTICE:

Click here

PROCEDURE

CLEAR DTC

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

(b) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

CHECK DTC

Pre-procedure1

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

Procedure1

(b) Check for DTCs and check that no DTCs are output.

Body Electrical > Telematics > Trouble Codes

Result	Proceed to
B15CC49 is not output	A
B15CC49 is output	B

Post-procedure1

USE SIMULATION METHOD TO CHECK

3.	CHECK MOBILEPHONE BATTERY

(a) Replace the mobilephone battery with a normal one and check if the same problem occurs again.

HINT:

Click here

NOTICE:

The mobilephone battery must not be replaced while an ACN call is in progress.
Click here
After replacing the mobilephone battery, perform initialization.
Click here

CLEAR DTC

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

(b) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

5.	CHECK FOR DTC

(a) Recheck for DTCs and check that no DTCs are output.

Body Electrical > Telematics > Trouble Codes

Result	Proceed to
B15CC49 is not output	A
B15CC49 is output	B

PERFORM INITIALIZATION

6.	REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

HINT:

Click here

NOTICE:

The ignition switch must be off.
Do not exchange the DCM (telematics transceiver) with one from another Toyota Prius vehicle.

PERFORM DCM ACTIVATION

Green Indicator Remains Off

DESCRIPTION

After the ignition switch is turned to ON, the DCM (telematics transceiver) will enter into self check mode. The manual (SOS) switch red indicator will illuminate for 2 seconds and turn off followed by the manual (SOS) switch green indicator illuminating and remaining on under normal operation. If neither the red nor green indicators remain on, verification of the subscription should be performed.

PROCEDURE

1.	CONFIRM GREEN INDICATOR COMES ON

(a) After the ignition switch is turned to ON and the manual (SOS) switch red indicator has come on for 2 seconds, confirm that the manual (SOS) switch green indicator comes on for 2 seconds.

OK:

Green indicator comes on.

GO TO STEP 6

2.	CONFIRM SUBSCRIPTION MODE

(a) Confirm the indicator status 5 seconds after the ignition switch is turned to ON.

Result	Proceed to
Green indicator remains on	A
Green indicator remains off	B

USE SIMULATION METHOD TO CHECK

3.	INPUT VIN WITH GTS

(a) Turn the ignition switch to ON and wait for 10 seconds.

(b) Click "VIN Synchronization" on the Utility Selection Menu.

Click here

4.	CONFIRM SUBSCRIPTION MODE

(a) Confirm the indicator status at 5 seconds after the ignition switch is turned to ON.

Result	Proceed to
Green indicator remains on	A
Green indicator remains off	B

END

5.	REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

Click here

NOTICE:

The ignition switch must be off.
Do not exchange the DCM (telematics transceiver) with one from another Toyota Prius vehicle.

PERFORM DCM ACTIVATION

CHECK DTC

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

(b) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

Body Electrical > Telematics > Trouble Codes

OK:

No DTCs are output.

GO TO DIAGNOSTIC TROUBLE CODE CHART

7.	REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

Click here

NOTICE:

The ignition switch must be off.
Do not exchange the DCM (telematics transceiver) with one from another Toyota Prius vehicle.

PERFORM DCM ACTIVATION

Red Indicator Remains On

DESCRIPTION

This means that the DCM (telematics transceiver) has detected a malfunction in the safety connect system and stored a DTC or specific vehicle control history (RoB) Code.

PROCEDURE

CHECK DTC

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

(b) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

Body Electrical > Telematics > Trouble Codes

OK:

No DTCs are output.

GO TO DIAGNOSTIC TROUBLE CODE CHART

2.	CHECK Toyota Prius Vehicle OPERATION HISTORY

(a) Check for vehicle control history and note any codes that are output.

Click here

Result	Proceed to
No Toyota Prius vehicle control history is output	A
Any vehicle control history is output	B

GO TO Toyota Prius Vehicle CONTROL HISTORY

3.	REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

Click here

NOTICE:

The ignition switch must be off.
Do not exchange the DCM (telematics transceiver) with one from another Toyota Prius vehicle.

PERFORM DCM ACTIVATION

Unable To Connect To Call Center

DESCRIPTION

This may occur when the intensity of telephone radio frequency was very weak, or the safety connect system has a malfunction and a DTC is stored.

PROCEDURE

1.	CHECK COMMUNICATION SERVICE CONDITION

(a) Move the Toyota Prius vehicle.

(1) If the vehicle is outside the communication service area, move the vehicle to a communication service area, wait for a while and perform the operation again.

OK:

Same problem does not occur.

END

CHECK DTC

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

(b) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

Body Electrical > Telematics > Trouble Codes

OK:

No DTCs are output.

GO TO DIAGNOSTIC TROUBLE CODE CHART

3.	CHECK DCM OPERATION HISTORY

(a) Check "DCM Operation History".

Click here

Result	Proceed to
Electric Level is weak (Level 0 or Level 1)	A
No problems with signal strength or communication	B

HINT:

If there was a communication problem in the past but the communications are working correctly now, it is possible that the source of the problem was temporary radio interference, or the Toyota Prius vehicle may have been outside the service area.