DTC C1AC1: Master Module Horizontal Axis Misalignment [12/2017 - 10/2023]: Procedure

1. Check the condition of the rear bumper around the blind spot monitor sensors.

   HINT: 

   When mud, snow, ice, a sticker, etc. is covering the sensor or its surrounding area on the rear bumper, the blind spot monitor sensor may store this DTC by mistake.

   Result

   Result	Proceed to
   A sticker, mud, snow, ice, etc. is covering the sensor or surrounding area on the rear bumper.	A
   There are scratches or dents on the rear bumper around the sensors.	B
   No abnormalities.

Result: 

B 

See step  3

Result: 

A 

See step  2

1. Clean the rear bumper.
2. Perform Blind Spot Monitor Beam Axis Confirmation using the Techstream.

   Refer to ADJUSTMENT [12/2017 - 10/2020] , or refer to ADJUSTMENT [10/2020 - 10/2023]

   Body Electrical > Blind Spot Monitor Master > Utility 

   Tester Display
   BSM Master Beam Axis Display

   Body Electrical > Blind Spot Monitor Master > Utility 

   Tester Display
   BSM Master Beam Axis Adjustment

   NOTE:

   Before replacing the blind spot monitor sensor RH, visually check for damage to the stud bolts or area surrounding the blind spot monitor sensor RH.

   If there is any damage to the stud bolts or area surrounding the blind spot monitor sensor RH, perform Blind Spot Monitor Sensor Installation Condition Inspection and adjust according to the result.

   Refer to ADJUSTMENT [12/2017 - 10/2020] , or refer to ADJUSTMENT [10/2020 - 10/2023]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END 

Result: 

NG 

REPLACE BLIND SPOT MONITOR SENSOR RH. Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023] 

1. Check the installation condition of the blind spot monitor sensor RH.

   Refer to ADJUSTMENT [12/2017 - 10/2020] , or refer to ADJUSTMENT [10/2020 - 10/2023]

   OK

   The blind spot monitor installation position is within the specified range

   Result

   Proceed to
   OK
   NG

Result: 

OK 

See step  5

Result: 

NG 

See step  4

1. Adjust the installation position of the blind spot monitor sensor RH.

   Refer to ADJUSTMENT [12/2017 - 10/2020] , or refer to ADJUSTMENT [10/2020 - 10/2023]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Perform Blind Spot Monitor Beam Axis Confirmation using the Techstream.

   Refer to ADJUSTMENT [12/2017 - 10/2020] , or refer to ADJUSTMENT [10/2020 - 10/2023]

   Body Electrical > Blind Spot Monitor Master > Utility 

   Tester Display
   BSM Master Beam Axis Display

   Body Electrical > Blind Spot Monitor Master > Utility 

   Tester Display
   BSM Master Beam Axis Adjustment

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END 

Result: 

NG 

REPLACE BLIND SPOT MONITOR SENSOR RH. Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]