Diagnostic Procedure

1. Turn ignition switch "OFF".
2. Disconnect throttle control motor relay.
   Fig 1: Identifying Throttle Control Motor Relay Power Supply Circuit

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check voltage between throttle control motor relay terminals 1, 3 and ground with CONSULT-II or tester.
   Fig 2: Checking Voltage Between Throttle Control Motor Relay Terminals 1, 3 And Ground

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

   Voltage: Battery voltage 

OK or NG 

1. OK: GO TO  3 .
2. NG: GO TO 2.

Check the following.

• 15A fuse
• Harness for open and short between throttle control motor relay and battery

1. Repair open circuit or short to ground or short to power in harness or connectors.

1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 3 and throttle control motor relay terminal 5.

   Refer to WIRING DIAGRAM  .

   Continuity should exist. 

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

OK or NG 

1. OK: GO TO  5 .
2. NG: GO TO 4.

Check the following.

• Harness connector E1, M1
• Harness connector M33, F22
• Harness for open and short between throttle control motor relay and ECM

1. Repair open circuit or short to ground or short to power in harness or connectors.

1. Check harness continuity between ECM terminal 104 and throttle control motor relay terminal 2.

   Refer to WIRING DIAGRAM  .

   Continuity should exist. 

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

OK or NG 

1. OK: GO TO  7 .
2. NG: GO TO 6.

Check the following.

• Harness connector E1, M1
• Harness connectors M33, F22
• Harness for open and short between throttle control motor relay and ECM

1. Repair open circuit or short to ground or short to power in harness or connectors.

Refer to "COMPONENT INSPECTION  " .

OK or NG 

1. OK: GO TO 8.
2. NG: Replace throttle control motor relay.

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT  " .

1. INSPECTION END