Diagnosis Procedure
WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECTION START
Confirm the detected malfunction (A or B). Refer to "DTC LOGIC ".
Which malfunction is detected?
A: GO TO 2.
B: GO TO 6.
- CHECK FUEL TANK TEMPERATURE (FTT) SENSOR POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect fuel level sensor unit and fuel pump harness connector.
- Turn ignition switch ON.
- Check the voltage between fuel level sensor unit and fuel pump harness connector and ground.
Fuel level sensor unit and fuel pump Ground Voltage (V) Connector Terminal C5 4 Ground Approx. 5 Is the inspection result normal?
YES: GO TO 4.
NO: GO TO 3.
- DETECT MALFUNCTIONING PART
Check the following.
- Harness for open or short between ECM and fuel level sensor unit and fuel pump
- Loose or poor connection for each connector and harness
: Repair open circuit, short to ground or short to power in harness or connector.
- CHECK FTT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Check the continuity between fuel level sensor unit and fuel pump harness connector and ground.
Fuel level sensor unit and fuel pump Ground Continuity Connector Terminal C5 3 Ground Existed - Also check harness for short to ground and short to power.
Is the inspection result normal?
YES: GO TO 6.
NO: GO TO 5.
- DETECT MALFUNCTIONING PART
Check the following.
- Harness for open or short between fuel level sensor unit and fuel pump and ground
- Loose or poor connection for each connector and harness
: Repair open circuit, short to ground or short to power in harness or connector.
- CHECK FTT SENSOR
Check FTT sensor. Refer to "COMPONENT INSPECTION ".
Is the inspection result normal?
YES: GO TO 7.
NO: Replace fuel level sensor unit and fuel pump. Refer to "REMOVAL AND INSTALLATION ".
- CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".
INSPECTION END