Rear Air Conditioning Control Panel Circuit

AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System): Rear Air Conditioning Control Panel Circuit
- Rear Air Conditioning Control Panel Circuit

DESCRIPTION

This circuit consists of the rear air conditioning control assembly and the air conditioning amplifier. When the rear air conditioning control is operated, signals are transmitted to the air conditioning amplifier through LIN communication.

If LIN communication malfunctions, the air conditioning amplifier does not operate even if the rear air conditioning control assembly is operated.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (REAR AIR CONDITIONING CONTROL ASSEMBLY - BODY GROUND)

(a) Disconnect the R1 control connector.





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

Standard resistance:





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

2. CHECK HARNESS AND CONNECTOR (REAR AIR CONDITIONING CONTROL ASSEMBLY - BATTERY)

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





Standard voltage:





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

3. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - REAR AIR CONDITIONING CONTROL ASSEMBLY)

(a) Disconnect the D38 amplifier connector.





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

Standard resistance:





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

4. REPLACE REAR AIR CONDITIONING CONTROL ASSEMBLY

(a) Replace the rear air conditioning control assembly Removal.

NEXT -- Continue to next step.

5. CHECK REAR AIR CONDITIONING CONTROL ASSEMBLY (OPERATION)

(a) Reconnect the D38 amplifier connector.

(b) Operate the rear air conditioning control assembly to check that it functions properly.

OK:

Rear air conditioning control assembly function operates normally.

NG -- REPLACE AIR CONDITIONING AMPLIFIER Removal

OK -- END (REAR AIR CONDITIONING CONTROL ASSEMBLY IS DEFECTIVE)