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 Or Tester

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

Check the following.

• Harness connectors E131, M92
• IPDM E/R connector E124
• 15A 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 P1065 ECM POWER SUPPLY .

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

With GST 

1. Turn ignition switch ON.
2. Select Service $04 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

• Yes: GO TO  5.
• No: INSPECTION END 

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

• INSPECTION END