DTC B237D-19: Left Door Mirror Foot Illumination Circuit Current Above Threshold [11/2023 - ]: Procedure

1. Clear the DTCs.

   Body Electrical > Mirror L > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Operate the door mirror foot light.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

1. Check for DTCs.

   Body Electrical > Mirror L > Trouble Codes 

   Result

   Result	Proceed to
   B237D-19 is output	A
   B237D-19 is not output	B

Result: 

B 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

Result: 

A 

See step  4

1. Remove the outer rear view mirror assembly LH.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Outer Rear View Mirror Assembly LH)

   Refer to REMOVAL [11/2023 - ]

2. Connect a positive (+) lead from the auxiliary battery to terminal 2 (MLP+).
3. Connect a negative (-) lead from the auxiliary battery to terminal 12 (-).
4. Check that the door mirror foot light LH illuminates.

   OK

   Door mirror foot light illuminates.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH. Refer to  REMOVAL [12/2019 - ] 

Result: 

NG 

See step  5

1. Remove the outer mirror light assembly LH.

   Refer to REMOVAL [11/2023 - ]

2. Inspect the outer mirror light assembly LH.

   Refer to INSPECTION [12/2019 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH. Refer to  REMOVAL [11/2023 - ] 

Result: 

NG 

REPLACE OUTER MIRROR LIGHT ASSEMBLY LH. Refer to  REMOVAL [11/2023 - ]