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. Are any of the following displayed as current on the CONSULT screen:
  - P0652-00
  - P0653-00
Is applicable DTC detected?

YES

Refer to DTC Index .

NO

GO TO 2 .
CHECK DTC PRIORITY
1. Turn ignition switch ON.
2. Connect CONSULT and check for "ENGINE" diagnostic trouble codes.
3. Check for DTC P0340-00 being current on the CONSULT screen.
Is DTC P0340-00 detected as current?

YES

GO TO 3 .

NO

Refer to Intermittent Incident .
INSPECT CAMSHAFT POSITION SENSOR AND CONNECTOR PINS
1. Turn ignition switch OFF.
2. Disconnect camshaft position sensor harness connector F109.
3. Inspect the harness connector and camshaft position sensor 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.
INSPECT CAMSHAFT POSITION SENSOR
1. Turn ignition switch OFF.
2. Disconnect camshaft position sensor harness connector F109.
3. Remove camshaft position sensor.
4. Inspect camshaft position sensor for the following:
  - Metal debris on the end of the sensor
  - Damage to the end of the sensor caused by camshaft gear
  - Oil leakage or insulation problems such as swelling
  - Damaged electrical potting in sensing end of sensor
Is the inspection result normal?

YES

GO TO 5 .

NO

Replace camshaft position sensor. Refer to Removal and Installation .

CHECK THE SENSOR SUPPLY VOLTAGE AND RETURN CIRCUIT

Turn ignition switch OFF.
Disconnect the camshaft position sensor harness connector F109.
Turn ignition switch ON.

Measure the voltage between camshaft position sensor harness connector F109 terminals 1 and 2.

Camshaft position sensor

Voltage

(Approx.)

Connector

Terminal

F109

4.75V - 5.25V

Is inspection result normal?

YES

GO TO 6.

GO TO 11.

INSPECT ECM AND HARNESS CONNECTOR PINS
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector F101.
3. Inspect the ECM 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 7 .

NO

Repair or replace error-detected parts.

CHECK FOR AN OPEN CIRCUIT IN THE HARNESS

Turn ignition switch OFF.
Disconnect the ECM harness connector F101.
Disconnect the camshaft position sensor harness connector F109.

Measure the resistance between the ECM harness connector F101 terminal 168 and the camshaft position sensor harness connector F109 terminal 3.

ECM		Camshaft position sensor		Resistance
Connector	Terminal	Connector	Terminal	Resistance
F101	168	F109	3	< 10 Ω

Is the inspection result normal?

YES

GO TO 8 .

Repair or replace the harness for an open.

CHECK FOR A PIN-TO-PIN SHORT CIRCUIT IN THE HARNESS

Turn ignition switch OFF.
Disconnect the ECM harness connector F101.
Disconnect the camshaft position sensor harness connector F109.

Measure the resistance between the ECM harness connector F101 terminal 168 and all other terminals in the ECM harness connector F101.

ECM		ECM		Resistance
Connector	Terminal	Connector	Terminal	Resistance
F101	168	F101	All	> 100k Ω

Is the inspection result normal?

YES

GO TO 9 .

Repair or replace the harness for a short.

VERIFY CAMSHAFT POSITION SENSOR AIR GAP
1. Turn ignition switch OFF.
2. Disconnect camshaft position sensor harness connector F109.
3. Remove camshaft position sensor.
4. Measure camshaft position sensor air gap at several points in the camshaft's revolution.
  - Minimum Air Gap: 0.25 mm (0.009 in)
  - Maximum Air Gap: 2.00 mm (0.078 in)
Is the inspection result normal?

YES

GO TO 10 .

NO

Replace or shim the sensor if the air gap is out of specification. If the target runout is excessive, replace the target.
CHECK DTCS AND VERIFY SENSOR CONDITION
1. Turn ignition switch OFF.
2. Connect all components.
3. Start engine and let idle for 1 minute.
4. Connect CONSULT and check for current "ENGINE" diagnostic trouble codes.
Is DTC P0340-00 current?

YES

Replace the camshaft position sensor. Refer to Removal and Installation .

NO

The removal and installation of the connector corrected the issue.
INSPECT ECM AND HARNESS CONNECTOR PINS
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector E93.
3. Inspect the ECM 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 12 .

NO

Repair or replace error-detected parts.

CHECK THE SENSOR SUPPLY VOLTAGE AND RETURN CIRCUIT

Turn ignition switch OFF.
Disconnect the ECM harness connector F101.
Turn ignition switch ON.

Measure the voltage between ECM harness connector F101 terminals 106 and 127.

ECM

Voltage

(Approx.)

Connector

Terminal

F101

106

127

4.75V - 5.25V

Is inspection result normal?

YES

GO TO 13.

Repair or replace the harness.

CHECK DTCS AND VERIFY SENSOR CONDITION
1. Turn ignition switch OFF.
2. Connect all components.
3. Start engine and let idle for 1 minute.
4. Connect CONSULT and check for current ENGINE diagnostic trouble codes.
Is DTC P0340-00 current?

YES

Replace the ECM. Refer to Removal and Installation .

NO

Inspection End.