2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 219
4.CHECK MASS AIR FLOW (MAF) SENSOR POWER SUPPLY CIRCUIT
1. Disconnect MAF sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between MAF sensor harness connector and ground.
Is the inspection result normal?
YES - GO TO 6.
NO - GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E108, M15
- Harness connectors F102, M72
- Harness for open or short between MAF sensor and ECM
- Harness for open or short between MAF sensor and IPDM E/R
- Repair open circuit, short to ground or short to power in harness or connectors.
6.CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between MAF sensor harness connector and ECM harness connector.
4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES - GO TO 7.
NO - Repair open circuit, short to ground or short to power in harness or connectors.
7.CHECK MAF SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check the continuity between MAF sensor harness connector and ECM harness connector.
2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES - GO TO 8.
NO - Repair open circuit, short to ground or short to power in harness or connectors.
8.CHECK MAF SENSOR
See: P Code Charts/P0102.
Is the inspection result normal?
YES - GO TO 9.
NO - Replace malfunctioning mass air flow sensor.
9.CHECK INTERMITTENT INCIDENT
