2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 370
4. Check the voltage between "fuel level sensor unit and fuel pump
(main)" harness connector and ground.
Is the inspection result normal?
YES - GO TO 5.
NO - GO TO 4.
4.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors B418, M66
- Harness for open or short between ECM and "fuel level sensor unit and fuel pump (main)"
- Repair open circuit, short to ground or short to power in harness or connector.
5.CHECK FUEL TANK TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect "unified meter and A/C amp." harness connector.
3. Check the continuity between "fuel level sensor unit and fuel pump (main)" harness connector and "unified meter and A/C amp." harness
connector.
4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES - GO TO 7.
NO - GO TO 6.
6.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors B418, M66
- Harness for open or short between "fuel level sensor unit and fuel pump (main)" and "unified meter and A/C amp."
- Repair open circuit, short to ground or short to power in harness or connector.
7.CHECK FUEL TANK TEMPERATURE SENSOR
See: P Code Charts/P0181.
Is the inspection result normal?
YES - GO TO 8.
NO - Replace "fuel level sensor unit and fuel pump (main)".
8.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
Component Inspection
1.CHECK FUEL TANK TEMPERATURE SENSOR
1. Turn ignition switch OFF.
2. Disconnect "fuel level sensor unit and fuel pump (main)" harness connector.
3. Remove "fuel level sensor unit and fuel pump (main)".
