Automatic Air Conditioning System

AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System): 22: Compressor Lock Sensor Circuit

DTC 22 - Compressor Lock Sensor Circuit

DESCRIPTION

The A/C amplifier reads the difference between compressor speed and engine speed. When the difference becomes too large, the A/C amplifier determines that the compressor locks, and turns the magnetic clutch off.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT A/C LOCK SENSOR (COOLER COMPRESSOR ASSEMBLY)





(a) Disconnect the A/C lock sensor (cooler compressor assembly) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPLACE A/C LOCK SENSOR
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (A/C LOCK SENSOR - A/C AMPLIFIER, 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 -- REPLACE AIR CONDITIONING AMPLIFIER