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 other existing ENGINE diagnostic trouble codes.
If DTC P0698-00 or P0699-00 is present, perform the confirmation procedure (trouble diagnosis) for these other DTCs first.

Is applicable DTC detected?

YES

Refer to DTC Index .

NO

GO TO 2 .
CHECK FOR ACTIVE CKP DTC
Check for DTC P0335-00 being active on the CONSULT screen.

Is applicable DTC active?

YES

GO TO 3 .

NO

Refer to Intermittent Incident .
INSPECT CRANKSHAFT POSITION SENSOR AND CONNECTOR PINS
1. Turn ignition switch OFF.
2. Disconnect crankshaft position sensor from engine harness connector.
3. Inspect the crankshaft position 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 4 .

NO

Repair or replace error-detected parts.
INSPECT CRANKSHAFT POSITION SENSOR AND CONNECTOR PINS
1. Remove the crankshaft position sensor from the gear housing.
2. Inspect the crankshaft 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

Repair or replace error-detected parts.

CHECK CRANKSHAFT POSITION SENSOR (CKP) POWER SUPPLY CIRCUIT

Turn ignition switch ON.

Check the voltage between crankshaft position sensor harness connector terminals.

CKP sensor			Voltage (V)
Connector	Terminal (+)	Terminal (-)	Voltage (V)
F110	190	169	Approx. 5V

Is the inspection result normal?

YES

GO TO 6 .

GO TO 11 .

INSPECT ECM AND ENGINE HARNESS CONNECTOR PINS
1. Turn ignition switch OFF.
2. Disconnect ECM from engine harness connector.
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 CKP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN

Check the continuity between CKP sensor harness connector and ECM harness connector.

CKP sensor		ECM		Continuity
Connector	Terminal	Connector	Terminal	Continuity
F110	3	F101	189	Yes

Is the inspection result normal?

YES

GO TO 8 .

Repair open circuit in harness or connectors.

CHECK CKP SENSOR INPUT SIGNAL CIRCUIT FOR SHORT

Check the continuity between CKP sensor harness connector and ECM harness connector.

ECM			Continuity
Connector	Terminal	Terminal	Continuity
F101	189	All others	No

Is the inspection result normal?

YES

GO TO 9 .

Repair short circuit in harness connector.

INSPECT THE AIR GAP AND TARGET WHEEL

Inspect the air gap and target wheel.

With the crankshaft position sensor removed from the engine block, measure the air gap and runout at several points in the crankshaft's revolution.

Air gap		Runout
Minimum	Maximum	Maximum target
0.25 mm [0.009 in]	2.25 mm [0.089 in]	0.5 mm [0.02 in]

Is the inspection result normal?

YES

GO TO 10 .

Add shims or repair as necessary.

CHECK THE DTC AND VERIFY CKP SENSOR CONDITION
1. Connect all components in the correct positions.
2. Start the engine and let it idle for 1 minute.
3. Turn ignition switch OFF. Key ON.
4. Connect CONSULT and check for active ENGINE diagnostic trouble codes.
Is P0335-00 DTC active?

YES

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

NO

The removal and installation of the connector corrected the issue
INSPECT ECM AND ENGINE HARNESS CONNECTOR PINS
1. Turn ignition switch OFF.
2. Disconnect ECM from engine harness connector.
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 CKP SENSOR CIRCUITS FOR OPEN

Check the continuity between CKP sensor (POS) harness connector and ECM harness connector.

CKP sensor (POS)		ECM		Continuity
Connector	Terminal	Connector	Terminal
F110	1	F101	190	Yes
	2		169

Is the inspection result normal?

YES

GO TO 13 .

Repair open circuit in harness or connectors.

CHECK CKP SENSOR CIRCUITS FOR SHORT

Check the continuity between CKP sensor (POS) harness connector and ground.

CKP sensor (POS)		Ground	Continuity
Connector	Terminal
F110	1(+)	(-)	No
	2(+)	(-)

Is the inspection result normal?

YES

GO TO 14 .

Repair short circuit in harness or connectors.

CHECK THE DTC AND VERIFY CKP SENSOR CONDITION
1. Connect all components in the correct positions.
2. Start the engine and let it idle for 1 minute.
3. Turn ignition switch OFF. Key ON.
4. Connect CONSULT and check for active ENGINE diagnostic trouble codes.
Is P0335-00 DTC active?

YES

Replace the ECM. Refer to Removal and Installation .

NO

The removal and installation of the connector corrected the issue.