Air Conditioning System (For Automatic Air Conditioning System)

HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System): B1451/51; Compressor Solenoid Circuit; 2013 MY Corolla [07/2012 -]
B1451/51 - Compressor Solenoid Circuit

DESCRIPTION

Through this circuit, the compressor assembly with pulley receives a refrigerant compression demand signal from the air conditioning amplifier.

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





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT COMPRESSOR ASSEMBLY WITH PULLEY

(a) Disconnect the compressor assembly with pulley (compressor solenoid) connector.





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

Standard Resistance:





*1: for TMC Made

*2: except TMC Made

Text in Illustration





Result:





B -- REPLACE COMPRESSOR ASSEMBLY WITH PULLEY (for 2AZ-FE) Removal

C -- REPLACE COMPRESSOR ASSEMBLY WITH PULLEY (for 2ZR-FE) Removal
A -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (COMPRESSOR ASSEMBLY WITH PULLEY - BODY GROUND)

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





Standard Resistance:





*1: for TMC Made

*2: except TMC Made

Text in Illustration





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

3. CHECK HARNESS AND CONNECTOR (COMPRESSOR ASSEMBLY WITH PULLEY - 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:





*1: for TMC Made

*2: except TMC Made

Result:





B -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Air Conditioning System (For Automatic Air Conditioning System)

C -- REPLACE AIR CONDITIONING AMPLIFIER Removal

A -- REPAIR OR REPLACE HARNESS OR CONNECTOR