Diesel Data: Automotive Repair

B1451

DTC B1451 Compressor Solenoid Circuit

DESCRIPTION

DTC Detection Condition:




The compressor assembly regulates the amount of refrigerant to discharge according to signals from the A/C amplifier assembly. The A/C amplifier assembly controls the compressor by using heat load variance and engine rpm variance data to determine the amount of refrigerant to discharge, and then converts the data to a signal.

Wiring Diagram:






Step 1-2:




Step 3:




INSPECTION PROCEDURE