Diagnosis Procedure
WARNING: This page is about a different car, the 2013 Infiniti M56 and 2013 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT
Check display unit power supply and ground circuit. Refer to "DISPLAY UNIT: DIAGNOSIS PROCEDURE ".
Is the inspection result normal?
YES: GO TO 2.
NO: Repair malfunctioning parts.
- CHECK CONTINUITY COMMUNICATION CIRCUIT
- Turn ignition switch OFF.
- Disconnect display unit connector and AV control unit connector.
- Check continuity between display unit harness connector and AV control unit harness connector.
Display unit AV control unit Continuity Connector Terminals Connector Terminals M195 11 M82 51 Existed 22 39 - Check continuity between display unit harness connector and ground.
Display unit Ground Continuity Connector Terminals M195 11 Not existed 22 Is the inspection result normal?
YES: GO TO 3.
NO: Repair harness or connector.
- CHECK COMMUNICATION SIGNAL
- Connect display unit connector and AV control unit connector.
- Turn ignition switch ON.
- Check signal between display unit harness connector and ground.
(+) (-) Condition Reference value Display unit Connector Terminal M195 11 Ground When adjusting display brightness. Is the inspection result normal?
YES: GO TO 4.
NO: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".
- CHECK COMMUNICATION SIGNAL
Check signal between display unit harness connector and ground.
(+) (-) Condition Reference value Display unit Connector Terminal M195 22 Ground When adjusting display brightness. Is the inspection result normal?
YES: INSPECTION END
NO: Replace display unit. Refer to "REMOVAL AND INSTALLATION ".