DTC 76


id070200804400

DTC 76

Rear air mix actuator (potentiometer) (present)

POSSIBLE CAUSE
•  Rear air mix actuator malfunction
•  Open circuit between rear air mix actuator and front climate control unit
•  Short circuit between rear air mix actuator (terminal E) and front climate control unit (terminal 2N: 16-pin)

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
•  Inspect rear air mix actuator. (See REAR AIR MIX ACTUATOR INSPECTION.)
•  Is it okay?
Yes
Go to the next step.
No
Replace rear air mix actuator. (See REAR AIR MIX ACTUATOR INSPECTION.)
2
•  Disconnect driver side and passenger side front air mix actuator connector.
•  Disconnect front airflow mode actuator connector.
•  Disconnect rear airflow mode actuator connector.
•  Disconnect ambient temperature sensor connector.
•  Disconnect cabin temperature sensor connector.
•  Disconnect front and rear evaporator temperature sensor connector.
•  Is resistance between terminals 2N and 2P of front climate control unit connector (16-pin) more than 840 ohms?
Yes
Go to the next step.
No
Repair wiring harness. (Short circuit)
3
•  Disconnect front climate control unit connector (16-pin).
•  Is resistance between terminals 2B and 2P of front climate control unit connector (16-pin) less than 7.8 kilohms?
Yes
Go to the next step.
No
Repair wiring harness. (Open circuit)
4
•  Is resistance between terminals 2B and 2N of front climate control unit connector (16-pin) less than 6.24 kilohms?
Yes
Inspect the connection of the front climate control unit connector.
No
Repair wiring harness. (Open circuit)