P0020

2GR-FSE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0010: Camshaft Position "A" Actuator Circuit (Bank 1)

DTC P0010 - Camshaft Position "A" Actuator Circuit (Bank 1)

DTC P0020 - Camshaft Position "A" Actuator Circuit (Bank 2)

DESCRIPTION

This DTC is designed to detect opens or shorts in the camshaft oil control valve (OCV) circuit. If the OCV's duty-cycle is excessively high or low while the engine is running, the ECM will illuminate the MIL and set the DTC.
The Variable Valve Timing (VVT) system adjusts the intake valve and exhaust valve timing to improve the driveability. The engine oil pressure turns the camshaft actuator to adjust the valve timing. The OCV is a solenoid valve and switches the engine oil line. The valve moves when the ECM applies the 12 V to the solenoid. The ECM changes the energizing time to the solenoid (duty-cycle) in accordance with the camshaft position, crankshaft position, throttle position, etc.









MONITOR DESCRIPTION

This DTC is designed to detect opens or shorts in the camshaft oil control valve (OCV) circuit. If the OCV's duty-cycle is excessively high or low while the engine is running, the ECM will illuminate the MIL and set the DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





COMPONENT OPERATING RANGE





WIRING DIAGRAM





INSPECTION PROCEDURE
HINT:
- If DTC P0010 is displayed, check the bank 1 VVT system for intake side circuit.
- Bank 1 refers to the bank that includes No. 1 cylinder.
- If DTC P0020 is displayed, check the bank 2 VVT system for intake side circuit.
- Bank 2 refers to the bank that does not include No. 1 cylinder.
- Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction Freeze Frame Data.

PROCEDURE

1. CHECK DTC (DTC P0010 OR P0020)
(a) Connect the Techstream to the DLC3.
(b) Clear DTC after recording the freeze frame data and DTC.
(c) Allow the engine to idle and check DTC.
(d) Check that P0010 or P0020 is present.
OK:
P0010 or P0020 is present
NG -- CHECK FOR INTERMITTENT PROBLEMS
OK -- Continue to next step.

2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV FOR INTAKE SIDE OF BANK 1 AND BANK 2)




(a) Disconnect the E51 or E49 OCV connector.
(b) Remove the OCV.
(c) Measure the resistance between the terminals of the OCV.
Standard resistance:
6.9 to 7.9 Ohms at 20°C (68°F)
(d) Reinstall the OCV.
NG -- REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV FOR INTAKE SIDE)
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (OCV FOR INTAKE SIDE - ECM)




(a) Disconnect the E51 or E49 OCV connector.
(b) Disconnect the E8 and E6 ECM connector.
(c) Measure the resistance.
Standard resistance (check for open):






Standard resistance (check for short):





(d) Reconnect the OCV connector.
(e) Reconnect the ECM connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE ECM