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 P1614-00 being current on the CONSULT screen.
Is applicable DTC detected?

YES

GO TO 2 .

NO

Refer to Intermittent Incident .
CHECK DTC PRIORITY
Check for DTC P0562-00, P0563-00, P2503-00 or P2504-00 being current on the CONSULT screen.

Is applicable DTC detected?

YES

Refer to DTC Index .

NO

GO TO 3 .
INSPECT DPF TEMPERATURE SENSOR MODULE AND CONNECTOR PINS
1. Turn ignition switch OFF.
2. Disconnect DPF temperature sensor module connector C29.
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 4 .

NO

Repair or replace error-detected parts.

CHECK BATTERY SUPPLY VOLTAGE

Turn ignition switch OFF.
Disconnect DPF temperature sensor module connector C29.
Turn ignition switch ON.

Check voltage between DPF temperature sensor module connector C29 and ground.

DPF temperature sensor module		Ground	Condition	Voltage (V) (Approx.)
Connector	Terminal
C29	3	-	Ignition switch ON	> 18 V
			Engine cranking
			Engine at idle

Is the inspection result normal?

YES

GO TO 7 .

GO TO 5 .

CHECK FOR CORRECT DPF TEMPERATURE SENSOR MODULE
1. Turn ignition switch OFF.
2. Remove the DPF temperature sensor module. Refer to Removal and Installation .
3. Verify that the DPF temperature sensor module is correct for the engine configuration.
Is the DPF temperature control module correct for the engine configuration?

YES

GO TO 6 .

NO

Replace DPF temperature sensor module. Refer to Removal and Installation .
CHECK CONDITION OF DPF TEMPERATURE SENSOR MODULE
1. Turn ignition switch OFF.
2. Connect DPF temperature sensor module connector C29.
3. Connect CONSULT and check for "ENGINE" diagnostic trouble codes.
4. Start and idle the engine.
5. Check for DTC P1614-00 being current on the CONSULT screen.
Is applicable DTC detected?

YES

Replace DPF temperature sensor module. Refer to Removal and Installation .

NO

Refer to Intermittent Incident .
CHECK BATTERY VOLTAGE
Test the voltage of the battery. Refer to Work Flow .

Is the battery voltage greater than 18 V?

YES

Check the battery overcharging condition. Refer to Work Flow (With EXP-800 NI or GR8-1200 NI) (with Cummins 5.0L) or Work Flow (Without EXP-800 NI or GR8-1200 NI) (with Cummins 5.0L) .

NO

GO TO 8 .

CHECK BATTERY SUPPLY VOLTAGE CIRCUIT

Turn ignition switch OFF.
Disconnect DPF temperature sensor module connector C29.
Remove fuse no. 72.
Turn ignition switch ON.

Check voltage between DPF temperature sensor module connector C29 and ground.

DPF temperature sensor module

Ground

Voltage (V)

(Approx)

Connector

Terminal

C29

> 18 V

Is the inspection result normal?

YES

Repair the short to voltage in the battery supply voltage circuit.

Refer to Intermittent Incident .