DTC Diagnosis Procedure

If DTC P1233 or P2101 is displayed with DTC P1238 or P1290, first perform the confirmation procedure (trouble diagnosis) for DTC P1238 or P1290.

Is DTC P1238 or P1290 detected?

YES

Perform diagnosis of applicable.

• DTC P1238: Refer to DTC Description .
• DTC P1290: Refer to DTC Description .

NO

GO TO 2.

1. Turn ignition switch OFF.
2. Pull out 15A fuse (No. 63) from IPDM E/R.
3. Check that 15A fuse is not blowing.

Is the fuse blown (open)?

YES

Replace the fuse after repairing the applicable circuit.

NO

GO TO 3.

Check the voltage between ECM harness connector terminals as per the following.

Is the inspection result normal?

YES

GO TO 6.

NO

GO TO 4.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect IPDM E/R harness connector.
4. Check the continuity between IPDM E/R harness connector and ECM harness connector.

   IPDM E/R		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   E124	65	F142	123	Existed

5. Also check harness for short to power and short to ground.

Is the inspection result normal?

YES

GO TO 5.

NO

Repair or replace error-detected parts.

1. Check the continuity between IPDM E/R harness connector and ECM harness connector.

   IPDM E/R		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   E123	57	F142	96	Existed

2. Also check harness for short to power and short to ground.

Is the inspection result normal?

YES

Perform the trouble diagnosis for power supply circuit.

NO

Repair or replace error-detected parts.

1. Turn ignition switch OFF.
2. Disconnect electric throttle control actuator harness connector.
3. Disconnect ECM harness connector.
4. Check the continuity between electric throttle control actuator harness connector and ECM harness connector.

   Electric throttle control actuator		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   F119	1	F142	147	Existed
   			148	Not existed
   	2		147	Not existed
   			148	Existed

5. Also check harness for short to power and short to ground.

Is the inspection result normal?

YES

GO TO 7.

NO

Repair or replace error-detected parts.

1. Remove the air inlet hose. Refer to CHARGE AIR COOLER : Exploded View .
2. Check if foreign matter is caught between the throttle valve and the housing.

   Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES

GO TO 8.

NO

1. Remove the foreign matter and clean the electric throttle control actuator inside.
2. Perform throttle valve closed position leaning. Refer to Work Procedure .

Refer to Component Inspection .

Is the inspection result normal?

YES

INSPECTION END

NO

Replace malfunction electric throttle control actuator. Refer to INTAKE MANIFOLD COLLECTOR : Exploded View .