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U12B0 POWER SUPPLY VOLTAGE

DTC Logic


DTC DETECTION LOGIC








Diagnosis Procedure


1. CHECK CHARGING SYSTEM

Check the vehicle charging system. Refer to "Work Flow (With EXP-800 NI or GR8-1200 NI)" With EXP-800 NI Or GR8-1200 NI or
"Work Flow (Without EXP-800 NI or GR8-1200 NI)" Without EXP-800 NI Or GR8-1200 NI.
Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace the malfunctioning components.

2. CHECK AV CONTROL UNIT POWER SUPPLY AND GROUND CIRCUITS

Perform the AV control unit power supply and ground circuit diagnosis procedure. Refer to "AV CONTROL UNIT : Diagnosis Procedure" Without Navigation.
Is the inspection result normal?
YES- Replace the AV control unit. Refer to "Removal and Installation" Without Navigation.
NO- Repair or replace harness or connectors.