The Camera Malfunction Indicator Displays and the Screen is Darkened [12/2019 - ]: Procedure

1. Disconnect the R22 inner rear view mirror assembly connector.
2. Disconnect the W25 inner mirror camera assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   R22-1 (CEG) - W25-3 (CEG)	Always	Below 1 Ω
   R22-2 (CEB+) - W25-1 (CEB+)	Always	Below 1 Ω
   R22-4 (CEV+) - W25-4 (CEV+)	Always	Below 1 Ω
   R22-3 (CEV-) - W25-2 (CEV-)	Always	Below 1 Ω
   R22-5 (SGND) - W25-5 (SGND)	Always	Below 1 Ω
   R22-1 (CEG) or W25-3 (CEG) - Body ground	Always	10 kΩ or higher
   R22-2 (CEB+) or W25-1 (CEB+) - Body ground	Always	10 kΩ or higher
   R22-4 (CEV+) or W25-4 (CEV+) - Body ground	Always	10 kΩ or higher
   R22-3 (CEV-) or W25-2 (CEV-) - Body ground	Always	10 kΩ or higher
   R22-5 (SGND) - W25-5 (SGND) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

1. Disconnect the inner mirror camera assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Inner Mirror Camera Assembly)

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   W25-1 (CEB+) - W25-3 (CEG)	Ignition switch ON	5.5 V or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE INNER REAR VIEW MIRROR ASSEMBLY. Refer to  REMOVAL [12/2019 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

Result: 

OK 

See step  3

1. Temporarily replace the inner mirror camera assembly with a new or known good one.

   Refer to REMOVAL [12/2019 - 11/2023] , or refer to REMOVAL [11/2023 - ]

2. Check that the digital rear-view mirror system is operating normally.

   OK

   The digital rear-view mirror system is operating normally.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (INNER MIRROR CAMERA ASSEMBLY IS DEFECTIVE) 

Result: 

NG 

REPLACE INNER REAR VIEW MIRROR ASSEMBLY. Refer to  REMOVAL [12/2019 - 11/2023]  , or refer to  REMOVAL [11/2023 - ]