DTC B1282, B1283 [FULL-AUTO AIR CONDITIONER]SM2445595
DTC B1282, B1283 [FULL-AUTO AIR CONDITIONER]

id0702c1800900

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 1X) 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
Replace the air mix actuator.
(See AIR MIX ACTUATOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
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?
― 1J—A
― 1X—C
― 1C—B
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 1X and air mix actuator terminal C?
Yes
Repair the wiring harness.
No
The system is normal at present. (Clear the malfunction from the memory.)