DTC P0011-00; P0012-00; Electric Variable Valve Timing Control System: Notes

NOTE:

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

Details On DTCs

DETECTION CONDITION AND POSSIBLE CAUSE

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, P0340:00 *1 : Value 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	Illuminates check engine light.
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 wiring harness between MAIN 200 A fuse and electric variable valve timing relay terminal D MAIN 200 A fuse and/or EVVT 20 A fuse malfunction Open circuit in wiring harness between battery positive terminal and electric variable valve timing relay terminal D Short to ground in wiring harness between the following terminals: Electric variable valve timing relay terminal C-Electric variable valve timing motor/driver terminal 1E Electric variable valve timing relay terminal C-Electric variable valve timing motor/driver terminal 2B Open circuit in wiring harness between the following terminals: Electric variable valve timing relay terminal C-Electric variable valve timing motor/driver terminal 1E Electric variable valve timing relay terminal C-Electric variable valve timing motor/driver terminal 2B 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

System Wiring Diagram

Fig 1: PCM (SKYACTIV-G 2.5T) Circuit Diagram

Courtesy of MAZDA MOTORS CORP.