Diagnostic Procedure

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check voltage between ECM terminal 121 and ground with CONSULT-II or tester.

   Voltage: Battery voltage 

OK or NG

OK: GO TO  3.

NG: GO TO 2.

Fig 1: Checking Voltage Between ECM Terminal 121 & Ground With CONSULT-II

Courtesy of NISSAN MOTOR CO., U.S.A.

Check the following.

• IPDM E/R connector E121
• 20A fuse
• Harness for open or short between ECM and battery

  : Repair or replace harness or connectors.

Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

OK or NG

OK: GO TO 4.

NG: Repair or replace harness or connectors.

WITH CONSULT-II 

1. Turn ignition switch ON.
2. Select "SELF DIAG RESULTS" mode with CONSULT-II.
3. Touch "ERASE".
4. Perform DTC Confirmation Procedure. 

   See DTC CONFIRMATION PROCEDURE .

5. Is the 1st trip DTC P1065 displayed again?

WITH GST 

1. Turn ignition switch ON.
2. Select MODE 4 with GST.
3. Touch "ERASE".
4. Perform DTC Confirmation Procedure. 

   See DTC CONFIRMATION PROCEDURE .

5. Is the 1st trip DTC P1065 displayed again?

Yes or No

Yes: GO TO 5.

No:INSPECTION END 

1. Replace ECM.
2. Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to ECM RE-COMMUNICATING FUNCTION .
3. Perform ACCELERATOR PEDAL RELEASED POSITION LEARNING .
4. Perform THROTTLE VALVE CLOSED POSITION LEARNING .
5. Perform IDLE AIR VOLUME LEARNING .

   : INSPECTION END