Mirror Heater Does Not Operate With Rear Defogger Switch

MIRROR (EXT): POWER MIRROR CONTROL SYSTEM: Mirror Heater does not Operate with Rear Defogger Switch
- Mirror Heater does not Operate with Rear Defogger Switch

DESCRIPTION

When the mirror heater switch on the air conditioning control assembly is pressed, the operation signal is transmitted to the air conditioning amplifier assembly through a LIN communication line. When the air conditioning amplifier assembly receives the signal, it turns on the engine room junction block assembly to operate the mirror heater.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
* Inspect the fuses for circuits related to this system before performing the following inspection procedure.
* If the battery voltage becomes low, mirror heater operation is canceled to prioritize supplying power to the power steering system.

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Air Conditioner / Active Test.

(e) Perform an Active Test according to the display on the Techstream.

Air Conditioner





Result:





B -- CHECK HARNESS AND CONNECTOR (ENGINE ROOM JUNCTION BLOCK ASSEMBLY - OUTER REAR VIEW MIRROR ASSEMBLY RH - BODY GROUND)

C -- CHECK HARNESS AND CONNECTOR (ENGINE ROOM JUNCTION BLOCK ASSEMBLY - OUTER REAR VIEW MIRROR ASSEMBLY LH - BODY GROUND)
A -- Continue to next step.

2. CHECK REAR WINDOW DEFOGGER SYSTEM

(a) Check the rear window defogger operation System Description.

OK:

The rear window defogger operates normally.

NG -- GO TO WINDOW DEFOGGER SYSTEM How To Proceed With Troubleshooting
OK -- Continue to next step.

3. CHECK ENGINE ROOM JUNCTION BLOCK ASSEMBLY

(a) Using a voltmeter, check the signal reading of the engine room junction block assembly Testing and Inspection.

OK:

Output signal reading is normal.

NG -- INSPECT ENGINE ROOM JUNCTION BLOCK ASSEMBLY (RESULTS OF SIGNAL READING CHECK) Testing and Inspection
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (ENGINE ROOM JUNCTION BLOCK ASSEMBLY - POWER SOURCE AND BODY GROUND)

(a) Remove the engine room junction block assembly from the engine room relay block and junction block assembly.





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

Standard Voltage:





(c) 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.

5. CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR ASSEMBLY - ENGINE ROOM JUNCTION BLOCK ASSEMBLY)

(a) Disconnect the 1G connector from the engine room junction block assembly.

(b) Disconnect the J7*1 or J13*2 connector from the outer rear view mirror assembly RH.

(c) Disconnect the K7*1 or K12*2 connector from the outer rear view mirror assembly LH.

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

Standard Resistance:





* *1: w/ Daytime Running Light Control

* *2: w/o Daytime Running Light Control

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE ENGINE ROOM JUNCTION BLOCK ASSEMBLY Removal

6. CHECK HARNESS AND CONNECTOR (ENGINE ROOM JUNCTION BLOCK ASSEMBLY - OUTER REAR VIEW MIRROR ASSEMBLY RH - BODY GROUND)

(a) Disconnect the 1G connector from the engine room junction block assembly.

(b) Disconnect the J7*1 or J13*2 connector from the outer rear view mirror assembly RH.

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

Standard Resistance:





* *1: w/ Daytime Running Light Control

* *2: w/o Daytime Running Light Control

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

7. INSPECT OUTER REAR VIEW MIRROR RH

(a) Remove the outer rear view mirror RH Removal.

(b) Inspect the outer rear view mirror RH Outer Rear View Mirror Glass.

OK:

Outer rear view mirror RH is normal.

NG -- REPLACE OUTER REAR VIEW MIRROR RH Removal

OK -- REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH Removal

8. CHECK HARNESS AND CONNECTOR (ENGINE ROOM JUNCTION BLOCK ASSEMBLY - OUTER REAR VIEW MIRROR ASSEMBLY LH - BODY GROUND)

(a) Disconnect the 1G connector from the engine room junction block assembly.

(b) Disconnect the K7*1 or K12*2 connector from the outer rear view mirror assembly LH.

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

Standard Resistance:





* *1: w/ Daytime Running Light Control

* *2: w/o Daytime Running Light Control

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

9. INSPECT OUTER REAR VIEW MIRROR LH

(a) Remove the outer rear view mirror LH Removal.

(b) Inspect the outer rear view mirror LH Outer Rear View Mirror Glass.

OK:

Outer rear view mirror LH is normal.

NG -- REPLACE OUTER REAR VIEW MIRROR LH Disassembly

OK -- REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH Removal