POWER MIRROR CONTROL SYSTEM(w/o Memory) Mirror Heater does not Operate with Rear Defogger Switch

DESCRIPTION

When the rear window defogger switch (mirror heater switch) on the air conditioning control assembly is pressed, the operation signal is transmitted to the air conditioning amplifier assembly via LIN communication. When the air conditioning amplifier assembly receives the signal, it turns on the defogger relay to operate the mirror heaters.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

PROCEDURE

1. PERFORM ACTIVE TEST USING GTS (DEFOGGER RELAY [REAR])

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the engine switch on (IG).

   3. Turn the GTS on.

   4. Enter the following menus: Body Electrical / Air Conditioner / Active Test.

   5. Perform the Active Test according to the display on the GTS.

      
      Body Electrical > Air Conditioner > Active Test

      Tester Display	Measurement Item	Control Range	Diagnostic Note
      Defogger Relay (Rear)	Mirror Heater	OFF/ON	-

      
      Body Electrical > Air Conditioner > Active Test

      Tester Display
      Defogger Relay (Rear)

      Result
      Result Proceed to Mirror heater operation on both mirrors are not normal A Mirror heater operation on RH side mirror is not normal B Mirror heater operation on LH side mirror is not normal C

   
   

   B

   INSPECT OUTER MIRROR RH Click here

   C

   INSPECT OUTER MIRROR LH Click here

   A

2. CHECK WINDOW DEFOGGER SYSTEM

   
   

   1. Check the window defogger system operation.

      Click here

      OK
      The window defogger system operates normally.

      Result
      Proceed to OK NG

   
   

   NG

   GO TO WINDOW DEFOGGER SYSTEM Click here

   OK

3. CHECK HARNESS AND CONNECTOR (DEF RELAY - OUTER REAR VIEW MIRROR ASSEMBLY)

   
   

   1. Disconnect the M11*1 or L12*2 outer rear view mirror assembly connector.

      
      

      • *1: for LH Side

      • *2: for RH Side

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

      Standard Voltage
      for LH Side
      Tester Connection Switch Condition Specified Condition M11-4 (HL+) - Body ground Engine switch on (IG), rear window defogger switch on 11 to 14 V
      for RH Side
      Tester Connection Switch Condition Specified Condition L12-4 (HR+) - Body ground Engine switch on (IG), rear window defogger switch on 11 to 14 V

      Result
      Proceed to OK NG

   
   

   OK

   USE SIMULATION METHOD TO CHECK Click here

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

4. INSPECT OUTER MIRROR RH

   
   

   1. Remove the outer mirror RH.

      Click here

   2. Inspect the outer mirror RH.

      Click here

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE OUTER MIRROR RH Click here

   OK

5. CHECK HARNESS AND CONNECTOR (DEF RELAY - OUTER REAR VIEW MIRROR ASSEMBLY RH AND BODY GROUND)

   
   

   1. Disconnect the L12 outer rear view mirror assembly RH connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition L12-4 (HR+) - L12-12 (-) Engine switch on (IG), rear window defogger switch on 11 to 14 V L12-4 (HR+) - Body ground Engine switch on (IG), rear window defogger switch on 11 to 14 V

      Result
      Proceed to OK NG

   
   

   OK

   REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH Click here

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

6. INSPECT OUTER MIRROR LH

   
   

   1. Remove the outer mirror LH.

      Click here

   2. Inspect the outer mirror LH.

      Click here

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE OUTER MIRROR LH Click here

   OK

7. CHECK HARNESS AND CONNECTOR (DEF RELAY - OUTER REAR VIEW MIRROR ASSEMBLY LH AND BODY GROUND)

   
   

   1. Disconnect the M11 outer rear view mirror assembly LH connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition M11-4 (HL+) - M11-12 (-) Engine switch on (IG), rear window defogger switch on 11 to 14 V M11-4 (HL+) - Body ground Engine switch on (IG), rear window defogger switch on 11 to 14 V

      Result
      Proceed to OK NG

   
   

   OK

   REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH Click here

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR