Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DTC PRIORITY
1. Turn ignition switch ON.
2. Connect CONSULT and check for ENGINE diagnostic trouble codes.
3. Check for DTC P0182-00 being current on the CONSULT screen.
Is applicable DTC detected?

YES

GO TO 2 .

NO

Refer to Intermittent Incident .
INSPECT FUEL TEMPERATURE SENSOR AND CONNECTOR PINS
1. Turn ignition switch OFF.
2. Disconnect fuel temperature sensor connector F128.
3. Inspect the harness and sensor connector pins for the following:
  - Loose connector
  - Corroded pins
  - Bent or broken pins
  - Pushed back or expanded pins
  - Moisture in or on the connector
  - Missing or damaged connector seals
  - Dirt or debris on or in the connector pins
  - Connector shell broken
  - Wire insulation damage
  - Damaged connector locking tab
Is the inspection result normal?

YES

GO TO 3 .

NO

Repair or replace error-detected parts.
CHECK DTC PRIORITY
1. Fuel temperature sensor connector F128 remains disconnected.
2. Turn ignition switch ON.
3. Check for DTC P0183-00 being current and DTC P0182-00 being past on the CONSULT screen after 30 seconds.
Is applicable DTC detected?

YES

GO TO 4 .

NO

GO TO 5 .
CHECK DTC PRIORITY
1. Turn ignition switch OFF.
2. Connect fuel temperature sensor connector F128.
3. Turn ignition switch ON.
4. Check for DTC P0182-00 being current on the CONSULT screen after 30 seconds.
Is applicable DTC detected?

YES

Replace the fuel temperature sensor. Refer to Removal and Installation .

NO

Refer to Intermittent Incident .
INSPECT ECM AND CONNECTOR PINS
1. Turn ignition switch OFF.
2. Disconnect ECM connector F101.
3. Inspect the harness and module connector pins for the following:
  - Loose connector
  - Corroded pins
  - Bent or broken pins
  - Pushed back or expanded pins
  - Moisture in or on the connector
  - Missing or damaged connector seals
  - Dirt or debris on or in the connector pins
  - Connector shell broken
  - Wire insulation damage
  - Damaged connector locking tab
Is the inspection result normal?

YES

GO TO 6 .

NO

Repair or replace error-detected parts.
CHECK DTC PRIORITY
1. ECM connector F101 remains disconnected.
2. Turn ignition switch ON.
3. Check for DTC P0183-00 being current and DTC P0182-00 being past on the CONSULT screen after 30 seconds.
Is applicable DTC detected?

YES

GO TO 7 .

NO

Replace the ECM. Refer to Removal and Installation .

CHECK SENSOR SUPPLY VOLTAGE

Turn ignition switch OFF.

Check resistance between the terminals of the ECM connector F101.

ECM connector F101		Resistance
Terminal	Terminal	Resistance
174	All	> 100k Ω

Is the inspection result normal?

YES

GO TO 8 .

A pin to pin short circuit on the signal circuit has been detected. Repair or replace the engine harness.

CHECK FUEL TEMPERATURE SENSOR

Check resistance between the terminals of the fuel temperature sensor at room temperature (25°C [77°F]).

ECM		Ground	Resistance
Connector	Terminal
F101	174	-	> 100k Ω

Is the inspection result normal?

YES

GO TO 9 .

A short circuit to ground on the signal circuit has been detected. Repair or replace the engine harness.

CHECK DTC PRIORITY
1. Connect all components.
2. Turn ignition switch ON.
3. Check for DTC P0182-00 being past on the CONSULT screen after 30 seconds.
Is applicable DTC detected?

YES

Refer to Intermittent Incident .

NO

GO TO 1 .