DISPLAY UNIT: Diagnosis Procedure
- CHECK POWER SUPPLY CIRCUIT (DISPLAY SIDE)
Check voltage between display unit harness connector and ground.
Signal name Connector No. Terminal No. Ignition switch position Value (Approx.) Inverter VCC M194 2 ACC 8.8 V Signal VCC 3 Is the inspection result normal?
YES: GO TO 4.
NO: GO TO 2.
- CHECK POWER SUPPLY CIRCUIT (CONTINUITY)
- Turn ignition switch OFF.
- Disconnect the harness connector between display unit and AV control unit.
- Check continuity between display unit harness connector and AV control unit harness connector.
Display unit AV control unit Continuity Connector Terminal Connector Terminal M194 2 M202 48 Existed 3 36 Existed - Check continuity between display unit harness connector and ground.
Display unit Ground Continuity Connector Terminal M194 2 Not existed 3 Not existed Is the inspection result normal?
YES: GO TO 3.
NO: Repair harness or connector.
- CHECK POWER SUPPLY CIRCUIT (AV CONTROL UNIT SIDE)
- Connect the AV control unit harness connector.
- Turn ignition switch ACC.
- Check voltage between AV control unit harness connector and ground.
(+) (-) Ignition switch position Voltage (Approx.) AV control unit Connector Terminal M202 48 Ground ACC 8.8 V 36 8.8 V Is the inspection result normal?
YES: INSPECTION END
NO: Replacement of AV control unit.
- CHECK GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect display unit connector.
- Check continuity between display unit harness connectors and ground.
Signal name Connector No. Terminal No. Ignition switch position Continuity Ground M194 1 OFF Existed Is the inspection result normal?
YES: INSPECTION END
NO: Repair harness or connector.