Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM1000000026ZE5
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 -           ]
Title: PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM (w/ Safe Exit Assist Function): C1AB411; Outer Mirror Indicator (Module "B" Side) Circuit Short to Ground; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]

DTC

C1AB411

Outer Mirror Indicator (Module "B" Side) Circuit Short to Ground

DESCRIPTION

This DTC is stored when the blind spot monitor sensor LH (B) detects a short to ground in the outer rear view mirror indicator LH.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AB411

Outer Mirror Indicator (Module "B" Side) Circuit Short to Ground

Both of the following conditions are met:

  • The blind spot monitor system is on
  • The current that is sent from the blind spot monitor sensor to the indicator is above a specified level for a specified period of time
  • Outer mirror LH (outer rear view mirror indicator LH)
  • Outer rear view mirror assembly LH (outer mirror retractor LH)
  • Harness or connector
  • Blind spot monitor sensor LH (B)

WIRING DIAGRAM

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 ignition switch off.

(b) Turn the ignition switch to ON.

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

Body Electrical > Blind Spot Monitor "B" > Trouble Codes

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

2.

CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR LH (B) - OUTER REAR VIEW MIRROR ASSEMBLY LH (OUTER MIRROR RETRACTOR LH))

(a) Disconnect the O57 blind spot monitor sensor LH (B) connector.

(b) Disconnect the L9 outer rear view mirror assembly LH (outer mirror retractor LH) connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

O57-4 (OMIL) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH (OUTER MIRROR RETRACTOR LH)

(a) Disconnect the B outer mirror LH (outer rear view mirror indicator LH) connector.

*a

Component without harness connected

(Outer Rear View Mirror Assembly LH (Outer Mirror Retractor LH))

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

L9-1 (BSL+) - Body ground

Always

10 kΩ or higher
NG

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH (OUTER MIRROR RETRACTOR LH)

OK

4.

INSPECT OUTER MIRROR LH (OUTER REAR VIEW MIRROR INDICATOR LH)

Click here 2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; MIRROR (EXT): OUTER REAR VIEW MIRROR GLASS: INSPECTION

OK

REPLACE BLIND SPOT MONITOR SENSOR LH (B) 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: REMOVAL 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: REMOVAL

NG

REPLACE OUTER MIRROR LH (OUTER REAR VIEW MIRROR INDICATOR LH)