Up to 08/2009
HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: B1451/51: Compressor Solenoid Circuit
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 (SOLENOID VALVE)
(a) Disconnect the A/C compressor (solenoid valve) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE A/C COMPRESSOR (SOLENOID VALVE) Removal
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (A/C COMPRESSOR (SOLENOID VALVE) - BODY GROUND)
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (A/C COMPRESSOR (SOLENOID VALVE) - 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:
Text in Illustration
C -- REPLACE A/C AMPLIFIER
B -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures
A -- REPAIR OR REPLACE HARNESS OR CONNECTOR