2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 601
2.CHECK STARTING SYSTEM
Turn ignition switch OFF, then turn it to START.
Does starter motor operate?
YES - GO TO 3.
NO - Check DTC with BCM. See: Starting and Charging/Starting System/Description and Operation.
3.CHECK PARK/NEUTRAL POSITION (PNP) SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect A/T assembly harness connector.
3. Disconnect ECM harness connector.
4. Check the continuity between A/T assembly harness connector and ECM harness connector.
5. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES - GO TO 5.
NO - GO TO 4.
4.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors F102, M72
- Harness for open or short between A/T assembly and ECM
- Repair open circuit, short to ground or short to power in harness or connectors.
5.CHECK INTERMITTENT INCIDENT
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Trouble
Diagnosis For Intermittent Incident/Description.
- INSPECTION END
P1078
P1078, P1084 EVT CONTROL POSITION SENSOR
Description
Exhaust valve timing (EVT) control position sensor detects the concave groove of the exhaust camshaft rear end.
This sensor signal is used for sensing a position of the exhaust camshaft.
This sensor uses a Hall IC.
Based on the position of the exhaust camshaft, ECM controls exhaust valve timing control magnet retarder to optimize the shut/open timing of
exhaust valve for the driving condition.
DTC Logic
DTC DETECTION LOGIC
NOTE:
If DTC P1078 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. See: P Code Charts/P0643.
