DTC P0010 CAMSHAFT POSITION A ACTUATOR CIRCUIT (BANK 1)

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Francine Carpenter
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1 DIAGNOSTICS DTC P0010 CAMSHAFT POSITION A ACTUATOR CIRCUIT (BANK 1) AIH08 CIRCUIT DESCRIPTION The Variable Valve Timing (VVT) system includes the ECM, the Oil Control Valve (OCV) and the VVT controller. The ECM sends a target dutycycle control signal to the OCV. This control signal, applied to the OCV, regulates the oil pressure supplied to the VVT controller. Camshaft timing control is performed based on engine operation conditions such as intake air volume, throttle position and engine coolant temperature. The ECM controls the OCV, based on the signals output from the sensors. The VVT controller regulates the intake camshaft angle using oil pressure through the OCV. As result, the relative position between the camshaft and the crankshaft is optimized, and the engine torque improves, fuel economy improves, and exhaust emissions decrease under overall driving conditions. Also, the ECM detects the actual valve timing using signals from the camshaft position sensor and the crankshaft position sensor, and performs feedback control. This is how target valve timing is verified by the ECM. ECM Crankshaft Position Sensor Mass Air Flow Sensor Throttle Position Sensor Engine Coolant Temp. Sensor Vehicle Speed Signal Camshaft Position Sensor Target Valve Timing Feedback Correction Actual Valve Timing Camshaft Timing Oil Control Valve (OCV) Duty Control A71007 DTC No. DTC Detection Condition Trouble Area P0010 Open or short in oil control valve circuit Open or short in oil control valve circuit Oil control valve ECM 203

2 0544 DIAGNOSTICS MONITOR DESCRIPTION After the ECM sends the target dutycycle signal to the OCV, the ECM monitors the OCV current to establish an actual dutycycle. The ECM detects a malfunction and sets a DTC when the actual dutycycle ratio varies from the target dutycycle ratio. MONITOR STRATEGY Related DTCs P0010 VVT oil control valve bank 1 range check Required sensors/components Frequency of operation Duration MIL operation Sequence of operation OCV Continuous 1 sec Immediately None TYPICAL ENABLING CONDITIONS Item The monitor will run whenever the following DTCs are not present Minimum Specification Maximum See List of Disable a Monitor table (On page 0524) Battery voltage 11 V 13 V Turget duty ratio 70 % Starter Current cut status TYPICAL MALFUNCTION THRESHOLDS Output signal duty for OCV Detection Criteria COMPONENT OPERATING RANGE OFF Not cut Threshold Output duty is 3 % or less despite the ECM supplying the current the OCV or Output duty is 100 % or more Parameter Standard Value Output signal duty for OCV More than 3 % and Less than 100 % WIRING DIAGRAM Camshaft Timing Oil Control Valve 2 RY 15 OCV+ ECM 1 RB 14 A

3 DIAGNOSTICS 0545 INSPECTION PROCEDURE HINT: Read freeze frame data using the handheld tester or the OBD II scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the airfuel ratio was lean or rich, etc. at the time of the malfunction. Handheld tester: 1 PERFORM ACTIVE TEST BY HANDHELD TESTER(OPERATE OCV) (d) (e) Connect the handheld tester to the DLC3. Start the engine and warm it up. Turn the ignition switch ON and push the handheld tester main switch ON. Select the item DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VVT CTRL B1. Check the engine speed when operating the OCV by the handheld tester. Tester Operation OCV is OFF OCV is ON Normal engine speed Rough idle or engine stall CHECK FOR INTERMITTENT PROBLEMS (See page 0541) NG 2 INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSY(OCV) (See page 102) NG REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSY 205

4 0546 DIAGNOSTICS 3 CHECK ECM(OCV SIGNAL) During idling, check the waveform between the specified terminals of the ECM connector using the oscilloscope. OCV+ (15) (14) Correct waveform is as shown OCV + OCV Signal Waveform 5 V/ Division GND 1 msec./division A79111 NG REPLACE ECM (See page 1017) 4 CHECK HARNESS AND CONNECTOR(CAMSHAFT TIMING OIL CONTROL VALVE (OCV) ECM) Wire Harness Side Camshaft Timing Oil Control Valve Connector OCV+ Front View ECM Connector A54386 A65743 Disconnect the camshaft timing oil control valve connector. Disconnect the ECM connector. Measure the resistance between the wire harness side connectors. Standard (Check for open): Oil control valve (1) OCV+ (15) Oil control valve (2) (14) Standard (Check for short): Oil control valve (1) or OCV+ (15) Body ground Oil control valve (2) or (14) Body ground Below 1 Ω 10 kω or higher (d) Reconnect the camshaft timing oil control valve connector. (e) Reconnect the ECM connector. NG REPAIR OR REPLACE HARNESS OR CONNECTOR CHECK FOR INTERMITTENT PROBLEMS (See page 0541) 206

5 DIAGNOSTICS OBDII scan tool (excluding handheld tester): 1 CHECK CAMSHAFT TIMING OIL CONTROL VALVE ASSY(OPERATE OCV) 0547 Component Side Camshaft Timing Oil Control Valve () (+) Front View A76968 (d) NG Disconnect the camshaft timing oil control valve connector. Apply positive battery voltage between the terminals of the camshaft timing oil control valve. Check the engine speed. Engine speed is rough idle or engine is stalled. Reconnect the camshaft timing oil control valve connector. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSY 2 CHECK ECM(OCV SIGNAL) During idling, check the waveform between the specified terminals of the ECM connector using the oscilloscope. OCV+ (15) (14) Correct waveform is as shown OCV + OCV Signal Waveform 5 V/ Division GND 1 msec./division A79111 NG REPLACE ECM (See page 1017) 207

6 0548 DIAGNOSTICS 3 CHECK HARNESS AND CONNECTOR(CAMSHAFT TIMING OIL CONTROL VALVE (OCV) ECM) Wire Harness Side Camshaft Timing Oil Control Valve Connector Front View A54386 (d) (e) Disconnect the camshaft timing oil control valve connector. Disconnect the ECM connector. Measure the resistance between the wire harness side connectors. Standard (Check for open): Oil control valve (1) OCV+ (15) Oil control valve (2) (14) Standard (Check for short): Oil control valve (1) or OCV+ (15) Body ground Oil control valve (2) or (14) Body ground Below 1 Ω 10 kω or higher Reconnect the camshaft timing oil control valve connector. Reconnect the ECM connector. OCV+ ECM Connector A65743 NG REPAIR OR REPLACE HARNESS OR CONNECTOR CHECK FOR INTERMITTENT PROBLEMS (See page 0541) 208

Camshaft Position "A" Actuator Circuit (Bank 1)

Camshaft Position A Actuator Circuit (Bank 1) 72 2TR-FE EINE CONTROL SYSTEM SFI SYSTEM DTC P0010 Camshaft Position "A" Actuator Circuit (Bank 1) HINT: This DTC relates to the Oil Control Valve (OCV). DCRIPTION The Variable Valve Timing (VVT) system