Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM100000001H93Y
Model Year Start: 2020 Model: Corolla Prod Date Range: [01/2019 - 09/2022]
Title: PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM (for HV Model (w/o Safe Exit Assist Function)): C1AC2; Slave Module Horizontal Axis Misalignment; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]

DTC

C1AC2

Slave Module Horizontal Axis Misalignment

DESCRIPTION

This DTC is stored when the angle of the blind spot monitor sensor RH deviates more than the allowable range from the horizontal axis.

HINT:

  • If a drum tester such as a speedometer tester, brake/speedometer combination tester or chassis dynamometer is used with the blind spot monitor system on, the blind spot monitor sensor may store this DTC by mistake.
  • 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.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AC2

Slave Module Horizontal Axis Misalignment

When the blind spot monitor sensor deviates 5 degrees or more from the horizontal axis when the system is activated

Blind spot monitor sensor RH

CAUTION / NOTICE / HINT

NOTICE:

  • When checking for DTCs, make sure that the blind spot monitor system is turned on.
  • If the bumper is damaged or the vehicle has a history of body repair, there is a possibility that the installation area of the blind spot monitor sensor may be deformed and the blind spot monitor sensor system may not operate correctly, so visually inspect the blind spot monitor sensor installation area (frame, stud bolt) to make sure it is not dented or bent.

    Click here 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: ADJUSTMENT 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: ADJUSTMENT

    If the results are not as specified, it is possible that the blind spot monitor sensor installation area (frame, stud bolt) is deformed, so make corrections as necessary.

PROCEDURE

1.

CHECK VEHICLE CONDITION

(a) 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

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.

B

GO TO STEP 3

A

2.

PERFORM BEAM AXIS CONFIRMATION

(a) Clean the rear bumper.

(b) Perform Blind Spot Monitor Beam Axis Confirmation using the Techstream.

Click here 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: ADJUSTMENT 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: ADJUSTMENT

Body Electrical > Blind Spot Monitor Slave > Utility

Tester Display

BSM Slave Beam Axis Display

Body Electrical > Blind Spot Monitor Slave > Utility

Tester Display

BSM Slave Beam Axis Adjustment

OK

END

NG

REPLACE BLIND SPOT MONITOR SENSOR RH

Click here 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: REMOVAL

NOTICE:

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.

Click here 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: ADJUSTMENT 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: ADJUSTMENT

3.

CHECK INSTALLATION CONDITION

(a) Check the installation condition of the blind spot monitor sensor RH.

Click here 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: ADJUSTMENT 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: ADJUSTMENT

HINT:

Take the appropriate action in accordance with the result.

NEXT

4.

PERFORM BEAM AXIS CONFIRMATION

(a) Install the rear bumper.

Click here 2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; EXTERIOR PANELS / TRIM: REAR BUMPER (for Hatchback except GR): INSTALLATION

(b) Perform Blind Spot Monitor Beam Axis Confirmation using the Techstream.

Click here 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: ADJUSTMENT 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: ADJUSTMENT

Body Electrical > Blind Spot Monitor Slave > Utility

Tester Display

BSM Slave Beam Axis Display

Body Electrical > Blind Spot Monitor Slave > Utility

Tester Display

BSM Slave Beam Axis Adjustment

OK

END

NG

REPLACE BLIND SPOT MONITOR SENSOR RH