B1442

DTC B1442 AIR INLET DAMPER CONTROL SERVOMOTOR CIRCUIT

CIRCUIT DESCRIPTION

Detection Item:

The damper servo (air inlet control) sends pulse signals to inform the A/C amplifier of the damper position.

The A/C amplifier activates the motor (normal, reverse) based on the signals to move the air inlet mode selection air inlet control damper to any position, which controls the intake air used as FRESH, FRESH/RECIRCULATION and RECIRCULATION.

HINT: Confirm that no mechanical problem is present because this diagnostic code can be output when either a damper link or damper is mechanically locked.

Wiring Diagram:

Step 1 - 2:

INSPECTION PROCEDURE

HINT: When using the hand-held tester, start inspection step 1 and when not using the hand-held tester, start from step 2.