B1451

AIR CONDITIONING: AIR CONDITIONING SYSTEM: B1451: Compressor Solenoid Circuit
B1451 - Compressor Solenoid Circuit

DESCRIPTION

In this circuit, the compressor receives a refrigerant compression demand signal from the air conditioning amplifier.

Based on this signal, the compressor changes the amount of compressor output.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT A/C COMPRESSOR (COMPRESSOR SOLENOID)

(a) Disconnect the C8 A/C compressor (compressor solenoid) connector.





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

Standard resistance:





(c) Reconnect the A/C compressor (compressor solenoid) connector.

NG -- REPLACE A/C COMPRESSOR Removal
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (A/C COMPRESSOR - BODY GROUND)

(a) Disconnect the C8 A/C compressor (compressor solenoid) connector.





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

Standard resistance:





(c) Reconnect the A/C compressor (compressor solenoid) connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (A/C COMPRESSOR - AIR CONDITIONING AMPLIFIER)

(a) Disconnect the C8 A/C compressor (compressor solenoid) connector.





(b) Disconnect the G7 air conditioning amplifier connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard resistance:





Result:





(d) Reconnect the A/C compressor (compressor solenoid) connector.

(e) Reconnect the air conditioning amplifier connector.

B -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures

C -- REPLACE AIR CONDITIONING AMPLIFIER Removal

A -- REPAIR OR REPLACE HARNESS OR CONNECTOR