Compressor Solenoid Circuit - Air Conditioning System

HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: B1451/51: Compressor Solenoid Circuit

DTC B1451/51 - Compressor Solenoid Circuit

DESCRIPTION

In this circuit, the A/C compressor receives a refrigerant compression demand signal from the A/C amplifier.
Based on this signal, the A/C compressor changes the amount of compressor output.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT A/C COMPRESSOR
(a) Remove the A/C compressor.





(b) Disconnect the A/C compressor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPLACE A/C COMPRESSOR
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (A/C COMPRESSOR - BODY GROUND)





(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (A/C COMPRESSOR - A/C AMPLIFIER)





(a) Disconnect the A/C amplifier connector.





(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






Result:






C -- REPLACE A/C AMPLIFIER
B -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
A -- REPAIR OR REPLACE HARNESS OR CONNECTOR