TYPICAL MALFUNCTION THRESHOLDS
PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY)
INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT)
CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY - ECM)
DTC P0010 Camshaft Position "A" Actuator Circuit (Bank 1) |
DESCRIPTION
The Variable Valve Timing (VVT) system adjusts the intake valve timing to improve driveability. The engine oil pressure turns the VVT controller to adjust the valve timing.The camshaft timing oil control valve assembly is a solenoid valve and switches the engine oil line. The valve moves when the ECM applies 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.

DTC No. | DTC Detection Condition | Trouble Area |
P0010 | Open or short in camshaft timing oil control valve (for intake camshaft) circuit (1 trip detection logic) |
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MONITOR DESCRIPTION
This DTC is designed to detect open or short circuits in the camshaft timing oil control valve (for intake camshaft) circuit. If the camshaft timing oil control valve duty-cycle is excessively high or low while the ignition switch is ON or the engine is running, the ECM will illuminate the MIL and set the DTC.MONITOR STRATEGY
Related DTCs | P0010: Camshaft timing oil control valve range check |
Required Sensors/Components (Main) | Camshaft timing oil control valve |
Required Sensors/Components (Related) | - |
Frequency of Operation | Continuous |
Duration | 1 second |
MIL Operation | Immediate |
Sequence of Operation | None |
TYPICAL ENABLING CONDITIONS
Monitor runs whenever following DTCs not present | None |
All of following conditions met | - |
Starter | OFF |
Ignition switch | ON |
Time after ignition switch off to ON | 0.5 seconds or more |
Either of the following conditions is met | Conditions A or B |
A. Both of the following conditions are met | - |
Battery voltage | 11 V or more, and less than 13 V |
Target duty cycle | Less than 70% |
B. Both of the following conditions are met | - |
Battery voltage | 13 V or more |
Target duty cycle | Less than 80% |
Current cut status | Not cut |
TYPICAL MALFUNCTION THRESHOLDS
Output duty cycle | 100% or more |
Output duty cycle | 3% or less |
COMPONENT OPERATING RANGE
Output duty cycle | More than 3%, and less than 100% |
CONFIRMATION DRIVING PATTERN
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation) (COROLLA_ZRE142 RM000000PDK0ZAX.html).
- Turn the ignition switch off and wait for at least 30 seconds.
- Turn the ignition switch to ON and turn the Techstream on.
- Wait 5 seconds.
- Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
- Read the pending DTCs.
- HINT:
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
- Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
- Input the DTC: P0010.
- Check the DTC judgment result.
Techstream Display Description NORMAL - DTC judgment completed
- System normal
ABNORMAL - DTC judgment completed
- System abnormal
INCOMPLETE - DTC judgment not completed
- Perform driving pattern after confirming DTC enabling conditions
N/A - Unable to perform DTC judgment
- Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
- HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- DTC judgment completed
- If the judgment result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs (COROLLA_ZRE142 RM000000PDK0ZAX.html).
- HINT:
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
WIRING DIAGRAM

INSPECTION PROCEDURE
- HINT:
- 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 help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
1.PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY) |
Connect the Techstream to the DLC3.
Start the engine.
Turn the Techstream on.
Turn the A/C switch to ON.
Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1).
Check the engine speed while operating the camshaft timing oil control valve assembly (for intake camshaft) using the Techstream.
- Result:
Techstream Operation Specified Condition 0% Normal engine speed 100% Engine idles roughly or stalls
- HINT:
- If the result is not acceptable, cool the engine (engine coolant temperature is 50°C (122°F) or less) and perform the Active Test again.
- Refer to "Data List / Active Test" [VVT OCV Duty #1 and VVT Change Angle #1] (COROLLA_ZRE142 RM000000PDN0MHX.html)
2.INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) Inspect the camshaft timing oil control valve assembly (for intake camshaft) (COROLLA_ZRE142 RM000003D3C00TX.html).
NG REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) (COROLLA_ZRE142 RM000003D3E00WX.html) OK
3.CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY - ECM) Disconnect the camshaft timing oil control valve assembly (for intake camshaft) connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance (Check for Open):
Tester Connection Condition Specified Condition B23-1 - B31-74 (OC1+) Always Below 1 Ω B23-2 - B31-96 (OC1-) Always Below 1 Ω
- Standard Resistance (Check for Short):
Tester Connection Condition Specified Condition B23-1 or B31-74 (OC1+) - Body ground Always 10 kΩ or higher B23-2 or B31-96 (OC1-) - Body ground Always 10 kΩ or higher
Reconnect the camshaft timing oil control valve assembly (for intake camshaft) connector.
Reconnect the ECM connector.
NG REPAIR OR REPLACE HARNESS OR CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY - ECM) OK REPLACE ECM (COROLLA_ZRE142 RM000001CN0030X.html)