PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM (for Gasoline Model (w/o Safe Exit Assist Function)): C1AB3; Short to GND in Outer Mirror Indicator(Slave); 2019 - 2023 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 11/2022]

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM100000001D0NO
Model Year Start: 2019	Model: GR Corolla	Prod Date Range: [06/2018 - 11/2022]
Title: PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM (for Gasoline Model (w/o Safe Exit Assist Function)): C1AB3; Short to GND in Outer Mirror Indicator(Slave); 2019 - 2023 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 11/2022]

DTC

C1AB3

Short to GND in Outer Mirror Indicator(Slave)

DESCRIPTION

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

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C1AB3	Short to GND in Outer Mirror Indicator(Slave)	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 RH Outer rear view mirror assembly RH Wire harness or connector Blind spot monitor sensor RH

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 engine switch off.

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

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

Body Electrical > Blind Spot Monitor Slave > Trouble Codes

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

2.	CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH - OUTER REAR VIEW MIRROR ASSEMBLY RH)

(a) Disconnect the O58 blind spot monitor sensor RH connector.

(b) Disconnect the K10 outer rear view mirror assembly RH connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
O58-4 (OMIR) or K10-1 (BSR+) - Body ground	Always	10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.	INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH

(a) Disconnect the IND2 outer mirror RH connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
K10-1 (BSR+) or IND2-2 (+) - Body ground	Always	10 kΩ or higher

NG

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH

OK

4.	INSPECT OUTER MIRROR RH

(a) Remove the outer mirror RH.

Click here

(b) Inspect the outer rear view mirror indicator RH on the outer mirror RH.

Click here

OK

REPLACE BLIND SPOT MONITOR SENSOR RH

NG

REPLACE OUTER MIRROR RH