Toyota Prius: Camshaft Oil Control Valve

• On-vehicle Inspection
• Removal
• Inspection
• Installation

On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

Pre-procedure1

(a) Put the engine in Inspection Mode (Maintenance Mode).

Powertrain > Hybrid Control > Utility

Tester Display
Inspection Mode

(b) Start the engine.

Procedure1

(c) Check the engine speed while operating the camshaft timing oil control valve assembly using the GTS.

Powertrain > Engine > Active Test

Tester Display
Control the Intake VVT OCV Duty Ratio Bank 1

Standard Condition:

GTS Operation	Specified Condition
0%	Normal engine speed
100%	Engine idles roughly or stalls

If the operation is not as specified, check the camshaft timing oil control valve assembly, wire harness and ECM.

Post-procedure1

(d) None

Removal

REMOVAL

CAUTION / NOTICE / HINT

COMPONENTS (REMOVAL)

Procedure		Part Name Code
1	CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY	11101J		-	-

●

Non-reusable part

-

-

PROCEDURE

1. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

(1) Disconnect the camshaft timing oil control valve assembly connector.

(2) Remove the bolt and camshaft timing oil control valve assembly from the cylinder head cover sub-assembly.

(3) Remove the O-ring from the camshaft timing oil control valve assembly.

Inspection

INSPECTION

PROCEDURE

1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

(a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition Result 1 ( ) - 2 (-) 20°C (68°F) 6.9 to 7.9 Ω Ω If the result is not as specified, replace the camshaft timing oil control valve assembly.

*a Component without harness connected (Camshaft Timing Oil Control Valve Assembly)

(b) Check the operation.

(1) Connect a positive ( ) lead from the auxiliary battery to terminal 1 and a negative (-) lead to terminal 2, and check the movement of the spool valve. OK: Condition Specified Condition Auxiliary battery voltage applied Valve moves in left arrow direction shown in illustration Auxiliary battery voltage cut off Valve moves in right arrow direction shown in illustration NOTICE: Confirm that the spool valve moves freely and does not stick in any position. If the result is not as specified, replace the camshaft timing oil control valve assembly. HINT: Accumulation of foreign matter can cause minor pressure leaks. Minor pressure leaks will cause the camshaft to advance or retard, and this will cause a DTC to be stored.

*a Component without harness connected (Camshaft Timing Oil Control Valve Assembly) *b When Auxiliary Battery Voltage Applied *c When Auxiliary Battery Voltage Cut Off *d Spool Valve

Installation

INSTALLATION

CAUTION / NOTICE / HINT

COMPONENTS (INSTALLATION)

Procedure		Part Name Code
1	CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY	11101J		-	-
2	INSPECT FOR ENGINE OIL LEAK	-	-	-

	N*m (kgf*cm, ft.*lbf): Specified torque	*	For use with a union nut wrench
●	Non-reusable part	-	-

PROCEDURE

1. INSTALL CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

*a

10 mm Union Nut Wrench

*b

Torque Wrench Fulcrum Length

(1) Apply a light coat of engine oil to a new O-ring and install it to the camshaft timing oil control valve assembly.

NOTICE:

Do not damage the O-ring.

(2) Temporarily install the camshaft timing oil control valve assembly to the cylinder head cover sub-assembly with the bolt.

(3) Using a 10 mm union nut wrench, tighten the bolt.

Torque:

Specified tightening torque :

10 N·m {102 kgf·cm, 7 ft·lbf}

(4) Connect the camshaft timing oil control valve assembly connector.

2. INSPECT FOR ENGINE OIL LEAK

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