| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM100000001D0NP |
| 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)): C1AB4; Open in Outer Mirror Indicator(Master); 2019 - 2023 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 11/2022] | ||
|
DTC |
C1AB4 |
Open in Outer Mirror Indicator(Master) |
DESCRIPTION
This DTC is stored when the blind spot monitor sensor LH detects an open in the outer rear view mirror indicator LH.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C1AB4 |
Open in Outer Mirror Indicator(Master) |
Both of the following conditions are met:
|
|
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 Master > Trouble Codes
OK:
No DTCs are output.
| OK |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR ASSEMBLY LH - BLIND SPOT MONITOR SENSOR LH AND BODY GROUND) |
(a) Disconnect the O57 blind spot monitor sensor LH connector.
(b) Disconnect the L9 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 |
|---|---|---|
|
O57-4 (OMIL) - L9-1 (BSL+) |
Always |
Below 1 Ω |
|
L9-4 (E) - Body ground |
Always |
Below 1 Ω |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH |
(a) Disconnect the IND1 outer mirror LH connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
L9-1 (BSL+) - IND1-2 (+) |
Always |
Below 1 Ω |
|
L9-4 (E) - IND1-1 (-) |
Always |
Below 1 Ω |
| NG |
|
|
|
4. |
INSPECT OUTER MIRROR LH |
(a) Remove the outer mirror LH.
Click here
![2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 - ]; MIRROR (EXT): OUTER REAR VIEW MIRROR GLASS: REMOVAL](/t3Portal/stylegraphics/info.gif)
(b) Inspect the outer rear view mirror indicator LH on the outer mirror LH.
Click here
| OK |
|
REPLACE BLIND SPOT MONITOR SENSOR LH
|
| NG |
|
|
|