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Note

• To determine the malfunctioning part, proceed with the diagnostics from “Function Inspection Using M-MDS”.

Details On DTCs

Description	Electric variable valve timing control system: • P0011:00: Over-advanced • P0012:00: Over-retarded
Detection condition	Determination conditions	• P0011:00: For the advance amount from the maximum intake valve retard position, a condition in which the actual advance amount is larger than the target value continues for a specified period of time.
		• P0012:00: For the advance amount from the maximum intake valve retard position, a condition in which the actual advance amount is smaller than the target value continues for a specified period of time.
	Preconditions	• Battery voltage: above 11 V *1 • Engine speed: 5,000 rpm or less*1 • Engine coolant temperature: 20 °C {68 °F} or more *1 • The following DTCs are not detected: ― P0010:00, P0335:00 and P0340:00 *1: Standard can be verified by displaying PIDs using M-MDS
	Malfunction determination period	• 10 s period
	Drive cycle	• 1
	Self test type	• CMDTC self test
	Sensor used	• CKP sensor • Intake CMP sensor
Fail-safe function	• Not applicable
Vehicle status when DTCs are output	• Not applicable
Possible cause	• Electric variable valve timing motor/driver connectors or terminals malfunction • Short to ground or open circuit in electric variable valve timing relay power supply circuit • Short to ground in electric variable valve timing motor/driver power supply circuit • Open circuit in electric variable valve timing motor/driver power supply circuit • PCM connector or terminals malfunction • Electric variable valve timing relay malfunction • Electric variable valve timing motor malfunction • Electric variable valve timing actuator malfunction ― Electric variable valve timing actuator is stuck in advanced position ― Electric variable valve timing actuator is stuck in retarded position • Timing chain malfunction ― Poor assembly of timing chain ― Looseness or jumping • Mis-detection of intake CMP sensor • Mis-detection of CKP sensor • PCM malfunction

Function Explanation (DTC Detection Outline)

• With the preconditions met, the PCM verifies the conformity of the actual timing relative to the target valve timing. If it does not conform to the normal determination range (difference between target valve timing and actual valve timing is 15 degrees or less) during the malfunction determination period ( approx. 10 s), even if the target valve timing is set to the retard side, the PCM determines an excess advance malfunction condition and stores a DTC.

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• With the preconditions met, the PCM verifies the conformity of the actual timing relative to the target valve timing. If it does not conform to the normal determination range (difference between target valve timing and actual valve timing is 15 degrees or less) during the malfunction determination period ( approx. 10 s), even if the target valve timing is set to the advance side, the PCM determines an excess retard malfunction condition and stores a DTC.

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Repeatability Verification Procedure

PID Item/Simulation Item Used In Diagnosis

PID/DATA monitor item table

Function Inspection Using M-MDS

Troubleshooting Diagnostic Procedure

― Perform an inspection of the connectors and wiring harnesses between the battery positive terminal and electric variable valve timing relay and the electric variable valve timing motor/driver.

― Perform a unit inspection of the electric variable valve timing relay.

― Perform an inspection of the electric variable valve timing drive parts.

― Inspect the intake CMP sensor and CKP sensor detection areas for adhesion of foreign matter.

― Verify that the primary malfunction is resolved and there are no other malfunctions.