AIR CONDITIONING SYSTEM Air Conditioning Control Panel Circuit

DESCRIPTION

w/ Multi-display:

• Center cluster module circuit (air conditioning control assembly) switch signals are sent to the air conditioning amplifier assembly via LIN communication.

  The air conditioning amplifier assembly then sends these signals to the radio receiver assembly via CAN communication.

w/o Multi-display:

• Center cluster module circuit (air conditioning control assembly) switch signals are sent to the air conditioning amplifier assembly via LIN communication.

WIRING DIAGRAM

1. w/ Multi-display

   

2. w/o Multi-display

   

CAUTION / NOTICE / HINT

PROCEDURE

1. CONFIRM MODEL

   Result
   Result Proceed to w/o Multi-display A w/ Multi-display B

   
   

   B

   CHECK RADIO RECEIVER ASSEMBLY Click here

   A

2. CHECK HARNESS AND CONNECTOR (POWER SOURCE, GROUND)

   
   

   1. Disconnect the center cluster module circuit (air conditioning control assembly) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition H80-1 (ACC) - Body ground Power switch off Below 1 V Power switch on (ACC) 11 to 14 V H80-2 (IG+) - Body ground Power switch off Below 1 V Power switch on (IG) 11 to 14 V H80-4 (+B) - Body ground Power switch off 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition H80-16 (GND) - Body ground Always Below 1 Ω

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

3. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - CENTER CLUSTER MODULE CIRCUIT)

   
   

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

      Standard Resistance
      Tester Connection Condition Specified Condition H80-11 (LIN1) - H85-37(LIN1) Always Below 1 Ω H80-11 (LIN1) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

4. REPLACE CENTER CLUSTER MODULE CIRCUIT (AIR CONDITIONING CONTROL PANEL ASSEMBLY)

   
   

   1. Replace the center cluster module circuit (air conditioning control assembly) with a new or a known good one Click here.

      OK
      The center cluster module circuit (air conditioning control assembly) operation returns to normal.

   
   

   OK

   END (CENTER CLUSTER MODULE CIRCUIT WAS DEFECTIVE)

   NG

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

5. CHECK RADIO RECEIVER ASSEMBLY

   
   

   1. Check that the radio receiver assembly operates normally.

      OK
      The radio receiver assembly operates normally.

      Result
      Result Proceed to OK A NG (w/ Navigation System) B NG (w/o Navigation System) C

   
   

   B

   GO TO NAVIGATION SYSTEM Click here

   C

   GO TO AUDIO AND VISUAL SYSTEM Click here

   A

6. CHECK HARNESS AND CONNECTOR (POWER SOURCE, GROUND)

   
   

   1. Disconnect the center cluster module circuit (air conditioning control assembly) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition H80-1 (ACC) - Body ground Power switch off Below 1 V Power switch on (ACC) 11 to 14 V H80-2 (IG+) - Body ground Power switch off Below 1 V Power switch on (IG) 11 to 14 V H80-4 (+B) - Body ground Power switch off 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition H80-16 (GND) - Body ground Always Below 1 Ω

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

7. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - CENTER CLUSTER MODULE CIRCUIT)

   
   

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

      Standard Resistance
      Tester Connection Condition Specified Condition H80-11 (LIN1) - H85-37(LIN1) Always Below 1 Ω H80-11 (LIN1) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

8. REPLACE CENTER CLUSTER MODULE CIRCUIT (AIR CONDITIONING CONTROL ASSEMBLY)

   
   

   1. Replace the center cluster module circuit (air conditioning control assembly) with a new or a known good one Click here.

      OK
      The center cluster module circuit (air conditioning control assembly) operation returns to normal.

   
   

   OK

   END (CENTER CLUSTER MODULE CIRCUIT WAS DEFECTIVE)

   NG

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here