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.
   1. Voltage: Battery voltage 

OK or NG 

1. OK: GO TO  3.
2. NG: GO TO 2.

Fig 1: Checking Voltage Between ECM Terminal 121 And Ground

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

Check the following.

• Harness connectors E10, F48
• 10A fuse
• Harness for open or short between ECM and battery
  1. Repair or replace harness or connectors.

Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

OK or NG 

1. OK: GO TO 4.
2. NG: Repair open circuit short to ground or short to power in 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 P1065 ECM POWER SUPPLY .

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

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

   See DTC P1065 ECM POWER SUPPLY .

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

Yes or No 

1. Yes: GO TO 5.
2. No:INSPECTION END 

1. Replace ECM.
2. Perform ACCELERATOR PEDAL RELEASED POSITION LEARNING .
3. Perform THROTTLE VALVE CLOSED POSITION LEARNING .
4. Perform IDLE AIR VOLUME LEARNING .
   1. INSPECTION END