Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Infiniti I35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK OVERALL FUNCTION
Check ASCD indicator under the following conditions.

Fig 1: ASCD Indicator Checking Specifications
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: INSPECTION END
2. NG: GO TO 2.
CHECK COMBINATION METER OPERATION
Check that combination meter operates normally.

OK or NG
1. OK: GO TO 3.
2. NG: Check combination meter circuit. Refer to WIRING DIAGRAM -- METER -- .
CHECK INDICATOR CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between ECM terminals 24, 25 and ground with CONSULT-II or tester.
Fig 2: Checking Voltage At ECM
Courtesy of NISSAN MOTOR CO., U.S.A.

Battery voltage should exist.

OK or NG
1. OK: GO TO 5 .
2. NG: GO TO 4.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors F53, M223
- Harness for open or short between combination meter and ECM
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 .
1. : INSPECTION END