AIR CONDITIONING SYSTEM Air Conditioning Control Panel Circuit

DESCRIPTION

w/ Navigation System:

• 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 multi-media module receiver assembly via CAN communication.

w/o Navigation System:

• 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/ Navigation System

   

2. w/o Navigation System

   

INSPECTION PROCEDURE

PROCEDURE

1. CONFIRM MODEL

   Result
   Result Proceed to w/o Navigation System A w/ Navigation System B

   
   

   B

   CHECK NAVIGATION SYSTEM 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.

   
   

   NG

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

   OK

   END (CENTER CLUSTER MODULE CIRCUIT WAS DEFECTIVE)

5. CHECK NAVIGATION SYSTEM

   
   

   1. Check that the navigation system operates normally.

      OK
      The navigation system operates normally.

   
   

   NG

   GO TO NAVIGATION SYSTEM Click here

   OK

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.

   
   

   NG

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

   OK

   END (CENTER CLUSTER MODULE CIRCUIT WAS DEFECTIVE)