Diagnostic Procedure

CHECK MIL POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter harness connector.
3. Turn ignition switch ON.
4. Check voltage between combination meter terminal 24 and ground with CONSULT-II or tester.
  
  Fig 1: Checking Voltage Between Terminal 24 & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 3 .
2. NG: GO TO 2.
DETECT MALFUNCTIONING PART
Check the following.
- Fuse block (J/B) connector M19
- 10A fuse
- Harness for open or short between fuse block (J/B) and combination meter
1. : Repair harness or connectors.
CHECK MIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 33 and combination meter terminal 45. Refer to Wiring Diagram.
  Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
1. OK: GO TO 5 .
2. NG: GO TO 4.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors M229, F66
- Harness for open or short between ECM and combination meter
1. : Repair open circuit or short to ground or short to power in harness or connectors.
CHECK INTERMITTENT INCIDENT
Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

OK or NG
1. OK: Replace combination meter. Refer to METERS AND GAUGES .
2. NG: Repair or replace.