Diesel Data: Automotive Repair

Air Conditioning System

DTC 42 AIR INLET DAMPER CONTROL SERVOMOTOR CIRCUIT

CIRCUIT DESCRIPTION


Detection Item:




The air inlet control servomotor is controlled by the A/C amplifier and moves the air inlet control servomotor to the desired position.

The air inlet control servomotor switches between "RECIRCULATION" and "FRESH" by rotating the motor (normal, reverse) with electrical power from the A/C amplifier. This controls intake air and switches "RECIRCULATION", "FRESH" and "HALF-RECIRCULATION".

Wiring Diagram:






Step 1:




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Step 3:




Step 4:




INSPECTION PROCEDURE