Mirror Heater does not Operate with Rear Defogger Switch [12/2019 - 11/2023]: Procedure

1. Check window defogger system operation.

   Refer to OPERATION CHECK [12/2019 - 11/2023]

   OK

   Window defogger system is normal.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO WINDOW DEFOGGER SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 11/2023] 

Result: 

OK 

See step  2

1. Perform an Active Test according to the display on the GTS.

   Body Electrical > Mirror L > Active Test 

   Tester Display	Measurement Item	Control Range	Diagnostic Note
   Mirror Heater	Mirror heater operation	OFF or ON	Operate with the ignition switch ON and the vehicle stopped. This test turns the mirror heater on or off. Mirror heater operation can be confirmed by touch.

   Body Electrical > Mirror L > Active Test 

   Tester Display
   Mirror Heater

   Body Electrical > Mirror R > Active Test 

   Tester Display	Measurement Item	Control Range	Diagnostic Note
   Mirror Heater	Mirror heater operation	OFF or ON	Operate with the ignition switch ON and the vehicle stopped. This test turns the mirror heater on or off. Mirror heater operation can be confirmed by touch.

   Body Electrical > Mirror R > Active Test 

   Tester Display
   Mirror Heater

   Result

   Result	Proceed to
   Mirror heater operation on both mirrors is normal	A
   Mirror heater operation on driver door mirror is not normal	B
   Mirror heater operation on front passenger door mirror is not normal	C

Result: 

A 

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

Result: 

C 

See step  5

Result: 

B 

See step  3

Refer to INSPECTION [12/2019 - ]

Result

Result: 

OK 

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR). Refer to  REMOVAL [12/2019 - ] 

Result: 

NG 

See step  4

Refer to INSPECTION [12/2019 - ]

Result

Result: 

OK 

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR). Refer to  REMOVAL [12/2019 - 11/2023] 

Result: 

NG 

REPLACE OUTER MIRROR (DRIVER DOOR). Refer to  REMOVAL [12/2019 - ] 

Refer to INSPECTION [12/2019 - ]

Result

Result: 

OK 

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (FRONT PASSENGER DOOR). Refer to  REMOVAL [12/2019 - ] 

Result: 

NG 

See step  6

Refer to INSPECTION [12/2019 - ]

Result

Result: 

OK 

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR). Refer to  REMOVAL [12/2019 - 11/2023] 

Result: 

NG 

REPLACE OUTER MIRROR (FRONT PASSENGER DOOR). Refer to  REMOVAL [12/2019 - ]