- DTC judgment completed
- System normal
Lexus NX: Camshaft Position "A" Actuator Circuit (Bank 1) (P0010)
Lexus NX Service Manual / Engine & Hybrid System / 2ar-fxe (engine Control) / Sfi System / Camshaft Position "A" Actuator Circuit (Bank 1) (P0010)
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. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory |
|---|---|---|---|---|---|
| P0010 | Camshaft Position "A" Actuator Circuit (Bank 1) | Open or short in camshaft timing oil control valve assembly circuit (1 trip detection logic). |
| Comes on | DTC stored |
MONITOR DESCRIPTION
These DTCs are designed to detect an open or short in the camshaft timing oil control valve assembly circuit. If the camshaft timing oil control valve assembly duty-cycle is excessively high or low while the power switch on (IG) or the engine is running, the ECM will illuminate the MIL and store a DTC.
MONITOR STRATEGY
| Related DTCs | P0010: Camshaft timing oil control valve assembly range check |
| Required Sensors/Components (Main) | Camshaft timing oil control valve assembly |
| Required Sensors/Components (Related) | - |
| Frequency of Operation | Continuous |
| Duration | 1 second |
| MIL Operation | Immediate |
| Sequence of Operation | None |
TYPICAL ENABLING CONDITIONS
All| Monitor runs whenever the following DTCs are not stored | None |
| All of the following conditions are met | - |
| Starter | Off |
| Power switch | On (IG) |
| Time after power switch off to on (IG) | 0.5 seconds or more |
| Either of the following conditions is met | Condition A or B |
| A. Both of the following conditions are met | - |
| Auxiliary battery voltage | 11 V or higher, and less than 13 V |
| Target duty cycle | Less than 70% |
| B. Both of the following conditions are met | - |
| Auxiliary battery voltage | 13 V or higher |
| Target duty cycle | Less than 80% |
| Current cut status | Not cut |
TYPICAL MALFUNCTION THRESHOLDS
Case 1| Output duty cycle | 100% or higher |
| Output duty cycle | 3% or less |
COMPONENT OPERATING RANGE
| Output duty cycle | Higher than 3%, and less than 100% |
CONFIRMATION DRIVING PATTERN
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG). and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for at least 30 seconds.
- Turn the power switch on (IG). 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
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.
-
If the judgment result shows INCOMPLETE or N/A and no DTC is output, perform a universal trip and check for permanent DTCs.
Click here
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HINT:
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
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.
PROCEDURE
| 1. | READ OUTPUT DTC (DTC P0010) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Clear the DTC after recording the freeze frame data and DTC.
Click here
(e) Turn the power switch off and wait for at least 30 seconds.
(f) Turn the power switch on (IG) and wait 5 seconds.
(g) Turn the Techstream on.
(h) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(i) Read the DTCs.
Powertrain > Engine and ECT > Trouble Codes| Result | Proceed to |
|---|---|
| DTC P0010 is output | A |
| DTCs are not output | B |
| B | .gif) | CHECK FOR INTERMITTENT PROBLEMS |
|
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| 2. | INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY |
(a) Inspect the camshaft timing oil control valve assembly.
Click here
| NG | | REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY |
|
| 3. | CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY - ECM) |
(a) Disconnect the camshaft timing oil control valve assembly connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| C37-1 - C48-74 (OC1+) | Always | Below 1 Ω |
| C37-2 - C48-75 (OC1-) | Always | Below 1 Ω |
| C37-1 or C48-74 (OC1+) - Body ground | Always | 10 kΩ or higher |
| C37-2 or C48-75 (OC1-) - Body ground | Always | 10 kΩ or higher |
| OK | | REPLACE ECM |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
READ NEXT:
Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1) (P0011,P0012)
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Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A) (P0016)
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When any of these DTCs are stored, the ECM enters fail-safe mode. The ECM turns off the air fuel ratio sensor heater in fail-safe mode. Fail-safe
SEE MORE:
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CAUTION / NOTICE / HINT NOTICE:
Some satellite radio broadcasts require payment. A contract must be made between a satellite radio company and the user. If the contract expires, it will not be possible to listen to the broadcast.
When replacing the radio receiver assembly, always replace it wit
Disposal
DISPOSAL CAUTION / NOTICE / HINT CAUTION: Before performing pre-disposal deployment of any SRS part, review and closely follow all applicable environmental and hazardous material regulations. Pre-disposal deployment may be considered hazardous material treatment. PROCEDURE 1. PRECAUTION CAUTION:
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