Toyota Prius: Certification Ecu
Removal
REMOVAL
CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during certification ECU (smart key ECU assembly) removal/installation are shown below.
Necessary Procedure After Parts Removed/Installed/Replaced| Replaced Part or Performed Procedure | Necessary Procedure | Effect/Inoperative Function when Necessary Procedure not Performed | Link |
|---|---|---|---|
| Certification ECU (smart key ECU assembly) | Code registration |
|
|
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal.
Click here
HINT:
When the cable is disconnected/reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.
- Items for which learning is completed by driving the Toyota Prius vehicle
Effect/Inoperative Function When Necessary Procedures are not Performed
Necessary Procedures
Link
Front Camera System
Drive the Toyota Prius vehicle straight ahead at 35 km/h (22 mph) or more for 5 second or more.
- Items for which learning is completed by operating the vehicle normally
Effect/Inoperative Function When Necessary Procedures are not Performed
Necessary Procedures
Link
*1: w/o Power Back Door System *2: w/ Power Back Door System
Power Door Lock Control System*1
- Back door opener
Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.
Power Back Door System*2
Reset back door close position
Air Conditioning System
for HEV Model:- After the ignition switch is turned to ON, the servo motor standard position is recognized.
for PHEV Model:- After the ignition switch is turned to ON, the servo motor and expansion valve standard position is recognized.
-
CAUTION / NOTICE / HINT
COMPONENTS (REMOVAL)
| Procedure | Part Name Code |
|
|
| |
|---|---|---|---|---|---|
| 1 | PRECAUTION | - |
| - | - |
| 2 | DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL | - | - | - | - |
| 3 | JUNCTION BLOCK BRACKET | 82673A |
| - | - |
| 4 | CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) | 89990A |
| - | - |
PROCEDURE
1. PRECAUTION
| NOTICE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Click here
|
2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
(a) for M20A-FXS:
Click here
(b) for 2ZR-FXE:
Click here
3. REMOVE JUNCTION BLOCK BRACKET
| Click here
|
4. REMOVE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
| NOTICE:
|
Installation
INSTALLATION
CAUTION / NOTICE / HINT
COMPONENTS (INSTALLATION)
| Procedure | Part Name Code |
|
|
| |
|---|---|---|---|---|---|
| 1 | CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) | 89990A |
| - | - |
| 2 | JUNCTION BLOCK BRACKET | 82673A |
| - | - |
| 3 | CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL | - | - | - | - |
| 4 | PERFORM CODE REGISTRATION | - | - | - |
|
| 5 | INITIALIZATION AFTER RECONNECTING AUXILIARY BATTERY TERMINAL | - | - | - |
|
| N*m (kgf*cm, ft.*lbf): Specified torque | - | - |
PROCEDURE
1. INSTALL CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
| NOTICE:
|
2. INSTALL JUNCTION BLOCK BRACKET
| Click here
|
Torque:
8.0 N·m {82 kgf·cm, 71 in·lbf}
3. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL
(a) for M20A-FXS:
Click here
(b) for 2ZR-FXE:
Click here
4. PERFORM CODE REGISTRATION
Click here
5. INITIALIZATION AFTER RECONNECTING AUXILIARY BATTERY TERMINAL
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
Toyota Prius (XW60) 2023-2025 Service Manual
Certification Ecu
Actual pages
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