DTC B1282, B1283


id070200800900

DTC B1282, B1283

Air mix actuator (potentiometer) system

POSSIBLE CAUSE
•  Air mix actuator malfunction
•  Open circuit in wiring harness between climate control unit and air mix actuator
•  Short circuit in wiring harness between climate control unit (terminal N) and air mix actuator (terminal C)

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
•  Inspect the air mix actuator. (See AIR MIX ACTUATOR INSPECTION [FULL-AUTO AIR CONDITIONER].)
•  Is it normal?
Yes
Go to the next step.
No
2
•  Disconnect the climate control unit connector and the air mix actuator connector.
•  Is there an open circuit in the wiring harness between the following terminals of the climate control unit and the air mix actuator?
―  J—A (L.H.D.)
―  J—B (R.H.D.)
―  N—C
―  C—B (L.H.D.)
―  C—A (R.H.D.)
Yes
Repair the wiring harness.
No
Go to the next step.
3
•  Is there a short circuit to ground in the wiring harness between climate control unit terminal N and air mix actuator terminal C?
Yes
Repair the wiring harness.
No
The system is normal at present. (Clear the malfunction from the memory.)