B1451

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. READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream ON.

(d) Enter the following menus: Body Electrical / Air Conditioner / Data List.

(e) Check the values by referring to the table below.

Air Conditioner:

OK:

The display is as specified in the normal condition column.

B -- INSPECT A/C COMPRESSOR

A -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

2. INSPECT A/C COMPRESSOR

(a) Remove the A/C compressor.

(b) Disconnect the A/C compressor connector.

Text in Illustration

C -- REPLACE A/C COMPRESSOR (for 4GR-FSE) Removal

B -- REPLACE A/C COMPRESSOR (for 2GR-FSE) Removal
A -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (A/C COMPRESSOR - 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.

4. 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:

Text in Illustration

C -- REPLACE A/C AMPLIFIER Removal

B -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures

A -- REPAIR OR REPLACE HARNESS OR CONNECTOR