Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Outer Mirror Indicator (Module "B" Side) Circuit Short to Ground (C1AB411)

Toyota Corolla Cross (2022-2024) Service Manual / Audio & Visual & Telematics / Park Assist / Monitoring / Blind Spot Monitor System / Outer Mirror Indicator (Module "B" Side) Circuit Short to Ground (C1AB411)

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
  • 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)

(a) Disconnect the S12 blind spot monitor sensor LH (B) connector.

(b) Disconnect the L17 outer rear view mirror assembly LH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

S12-4 (OMIL) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH

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

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

L17-5 (BSL+) - Body ground

Always

10 kΩ or higher

Result:

Proceed to

OK

NG

*a

Component without harness connected

(Outer Rear View Mirror Assembly LH)
NG

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH

OK

4.

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

Click here

OK

REPLACE BLIND SPOT MONITOR SENSOR LH (B)

NG

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

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