DTC B1282, B1283

#
DTC B1282, B1283

B3E070201038W07

DTC B1282, B1283 | Air mix actuator (potentiometer) system
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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
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1 | • Inspect the air mix actuator. (See AIR MIX ACTUATOR INSPECTION.) • Is it normal? | Yes | Go to the next step.
No | Replace the air mix actuator. (See AIR MIX ACTUATOR REMOVAL/INSTALLATION.)

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?

  - P-A
  - N-C
  - U-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 N and air mix actuator terminal C? | Yes | Repair the wiring harness.
No | The system is normal at present. (Clear the past malfunction from the memory.)