Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001H93L
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)): C1A47; Steering Angle Sensor; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]

DTC

C1A47

Steering Angle Sensor

DESCRIPTION

The blind spot monitor sensor receives steering angle signals from the steering sensor via CAN communication.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1A47

Steering Angle Sensor

A fail flag is transmitted from the steering angle sensor

  • Steering sensor
  • Blind spot monitor sensor LH
  • Blind spot monitor sensor RH

CAUTION / NOTICE / HINT

NOTICE:

When checking for DTCs, make sure that the blind spot monitor system is turned on.

PROCEDURE

1.

CHECK DTC

(a) Turn the power switch off.

(b) Turn the power switch on (IG).

(c) Recheck for DTCs and check if the same DTC is output again.

Body Electrical > Blind Spot Monitor Master > Trouble Codes

Body Electrical > Blind Spot Monitor Slave > Trouble Codes

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

2.

REPLACE STEERING SENSOR

(a) Replace the steering sensor with a new or known good one.

Click here 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: STEERING ANGLE SENSOR: REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: STEERING ANGLE SENSOR: REMOVAL

NEXT

3.

RECHECK DTC

(a) Turn the power switch off.

(b) Turn the power switch on (IG).

(c) Recheck for DTCs and check if the same DTC is output again.

Body Electrical > Blind Spot Monitor Master > Trouble Codes

Body Electrical > Blind Spot Monitor Slave > Trouble Codes

Result

Proceed to

No DTCs are output

A

DTC C1A47 is output ("Blind Spot Monitor Master")

B

DTC C1A47 is output ("Blind Spot Monitor Slave")

C

A

END

B

REPLACE BLIND SPOT MONITOR SENSOR LH

C

REPLACE BLIND SPOT MONITOR SENSOR RH