Diagnostic Procedure

1. Turn ignition switch OFF.
2. Disconnect throttle control motor relay harness connector.
   Fig 1: Disconnecting Throttle Control Motor Relay Harness Connector

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check voltage between throttle control motor relay terminals 2, 3 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 2: Checking Voltage Between Throttle Control Motor Relay Terminals

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

Check the following.

• 15A fuse
• Harness for open or short between throttle control motor relay and battery
  1. Repair or replace harness or connectors.

1. Disconnect ECM harness connector.
2. Check continuity between ECM terminal 3 and throttle control motor relay terminal 5. Refer to WIRING DIAGRAM .
   1. 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 connectors E32, F32
• Harness for open or short between ECM and throttle control motor relay
  1. Repair open circuit or short to ground or short to power in harness or connectors.

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

   Refer to WIRING DIAGRAM .

   1. 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 connectors E33, F33
• Harness for open or short between ECM and throttle control motor relay
  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