Diagnostic Procedure

1. Turn ignition switch OFF.
2. Disconnect throttle control motor relay. See Figure .
3. Check voltage between throttle control motor relay terminals 2, 5 and ground with CONSULT-II or tester.
   Fig 1: Checking Voltage Between Throttle Control Motor Relay Terminals 2, 5 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 fuse

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 102 and throttle control motor relay terminal 3.

   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 E15, F18
• 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 26 and throttle control motor relay terminal 1.

   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 E81, M15
• Harness connectors M223, F53
• 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 the throttle control motor relay.

Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT  .

1. : INSPECTION END