Self Diagnosis Will Not Run

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Problem Symptom Chart - Self Diagnosis Not Run (1 Of 2)

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

Fig 2: Problem Symptom Chart - Self Diagnosis Not Run (2 Of 2)

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

CHECK ICC SYSTEM DISPLAY
When ignition switch is ON, do all displays illuminate?

YES or NO
- YES: GO TO 2.
- NO: GO TO .
CHECK SELF-DIAGNOSIS
- Disconnect ECM connectors, and check for damaged, bent or loose terminals. Securely connect them again.
- Can self-diagnosis for ICC system be performed?
YES or NO
- YES: Inspection End.
- NO: GO TO 3.
CHECK ICC STEERING SWITCH
Check ICC steering switch. Refer to "ICC STEERING SWITCH ".

OK or NG
- OK: GO TO 4.
- NG: Replace ICC steering switch. Refer to "REMOVAL AND INSTALLATION OF STEERING WHEEL SWITCH ".
CHECK HARNESS BETWEEN ECM AND ICC STEERING SWITCH
Check harness and spiral cable between ECM and ICC steering switch for open or short circuit.

OK or NG
- OK: GO TO 6.
- NG: Repair or replace harness or spiral cable between ECM and ICC steering switch.
CHECK POWER SUPPLY FOR ICC UNIT
- Check ICC unit power supply, and repair if necessary.
- When ignition switch is ON, do all displays illuminate?
YES or NO
- YES: Perform self-diagnosis again.
- NO: GO TO 6.
CHECK CONNECTOR FOR ICC UNIT
- Disconnect connectors ICC unit, and check terminals for bends and looseness. Securely connect them again.
- When ignition switch is ON, do all displays illuminate?
YES or NO
- YES: Perform self-diagnosis again.
- NO: GO TO 7.
CHECK CAN COMMUNICATION
Perform self-diagnosis with CONSULT-II, and check CAN communication system for malfunction.

OK or NG
- OK: Replace combination meter. Refer to "COMBINATION METER "
- NG: CAN communication inspection. Refer to "DTC 20 CAN COMM CIRCUIT ".