Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Short to +B in Outer Mirror Indicator(Master) (C1AB0)
DESCRIPTION
This DTC is stored when the blind spot monitor sensor LH detects a short to +B in the outer rear view mirror indicator LH.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1AB0 | Short to +B 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 CodesOK:
No DTCs are output.
| OK |  | USE SIMULATION METHOD TO CHECK |
|
| 2. | CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR INDICATOR CIRCUIT) |
(a) Disconnect the X2 blind spot monitor sensor LH connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| X2-4 (OMIL) - Body ground | Engine switch on (IG) | Below 1 V |
| OK | | REPLACE BLIND SPOT MONITOR SENSOR LH |
|
| 3. | CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR INDICATOR CIRCUIT) |
(a) Disconnect the IND1 outer mirror LH connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| X2-4 (OMIL) - Body ground | Engine switch on (IG) | Below 1 V |
| OK | | REPLACE OUTER MIRROR LH |
|
| 4. | CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR INDICATOR CIRCUIT) |
(a) Disconnect the z12 outer rear view mirror assembly LH connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| X2-4 (OMIL) - Body ground | Engine switch on (IG) | Below 1 V |
| OK | | REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH |
|
| 5. | CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR INDICATOR CIRCUIT) |
(a) Disconnect the N4 outer mirror control ECU assembly LH connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| X2-4 (OMIL) - Body ground | Engine switch on (IG) | Below 1 V |
| OK | | REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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