Diagnosis Procedure
- PERFORM SELF-DIAGNOSIS
Perform self-diagnosis function. Refer to "WITHOUT ACCS: DIAGNOSIS DESCRIPTION " (WITHOUT ACCS) or "WITH ACCS: DIAGNOSIS DESCRIPTION " (WITH ACCS).
Is the inspection result normal?
YES: GO TO 5.
NO: GO TO 2.
- CHECK POWER SUPPLY FOR AIR MIX DOOR MOTOR (DRIVER SIDE)
Check voltage between air mix door motor (driver side) harness connector and ground.
(+) (-) Voltage (Approx.) Air mix door motor (driver side) - Connector Terminal M252 1 Ground 12 V Is the inspection result normal?
YES: GO TO 3.
NO: Repair harness or connector.
- CHECK SIGNAL FOR AIR MIX DOOR MOTOR (DRIVER SIDE)
Confirm A/C LAN signal between air mix door motor (driver side) harness connector and ground using an oscilloscope.
(+) (-) Voltage Air mix door motor (driver side) - Connector Terminal M252 3 Ground Is the inspection result normal?
YES: GO TO 4.
NO: Repair harness or connector.
- CHECK AIR MIX DOOR MOTOR (DRIVER SIDE) GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect air mix door motor (driver side) connector.
- Check continuity between air mix door motor (driver side) harness connector and ground.
Air mix door motor (driver side) - Continuity Connector Terminal M252 2 Ground Existed Is the inspection result normal?
YES: Replace air mix door motor (driver side).
NO: Repair harness or connector.
- CHECK INSTALLATION OF AIR MIX DOOR MOTOR (DRIVER SIDE)
Check air mix door motor is properly installed (driver side). Refer to "EXPLODED VIEW ".
Is it installed normally?
YES: INSPECTION END
NO: Repair or replace air mix door motor (driver side).