PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM (for HV Model (w/o Safe Exit Assist Function)): C1AB5; Open in Outer Mirror Indicator(Slave); 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM100000001H93R
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)): C1AB5; Open in Outer Mirror Indicator(Slave); 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]

DTC

C1AB5

Open in Outer Mirror Indicator(Slave)

DESCRIPTION

This DTC is stored when the blind spot monitor sensor RH detects an open in the outer rear view mirror indicator RH.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C1AB5	Open in Outer Mirror Indicator(Slave)	Both of the following conditions are met: The blind spot monitor system is on The current flowing to the indicator is below a specified value when indicator operation voltage is being sent to the indicator	Outer mirror RH Outer rear view mirror assembly RH 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 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 Slave > Trouble Codes

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

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

(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) - K10-1 (BSR+)	Always	Below 1 Ω
K10-4 (E) - Body ground	Always	Below 1 Ω

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+) - IND2-2 (+)	Always	Below 1 Ω
K10-4 (E) - IND2-1 (-)	Always	Below 1 Ω

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