Diagnosis Procedure
- CHECK DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT
Check display unit power supply and ground circuit. Refer to DIAGNOSIS PROCEDURE .
Is the inspection result normal?
YES
GO TO STEP 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 M71 11 M202 51 Existed 22 39 - Check continuity between display unit harness connector and ground.
Display unit Ground Continuity Connector Terminals M71 11 Not existed 22
Is the inspection result normal?
YES
GO TO STEP 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 M71 22 Ground When adjusting display brightness.
Is the inspection result normal?
YES
GO TO STEP 4 .
NO
Replace AV control unit. Refer to EXPLODED VIEW .
- CHECK COMMUNICATION SIGNAL
Check signal between display unit harness connector and ground.
(+) (-) Condition Reference value Display unit Connector Terminal M71 11 Ground When adjusting display brightness. Is the inspection result normal?
YES
INSPECTION END
NO
Replace display unit. Refer to EXPLODED VIEW .