Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Short to GND in Outer Mirror Indicator(Slave) (C1AB3)
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:
|
|
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 CodesOK:
No DTCs are output.
| OK |  | USE SIMULATION METHOD TO CHECK |
|
| 2. | CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH - OUTER MIRROR CONTROL ECU ASSEMBLY RH) |
(a) Disconnect the W2 blind spot monitor sensor RH connector.
(b) Disconnect the M4 outer mirror control ECU assembly RH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| W2-4 (OMIR) - Body ground | Always | 10 kΩ or higher |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 3. | INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH |
(a) Disconnect the z13 outer rear view mirror assembly RH connector.
(b) Disconnect the IND2 outer mirror RH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| z13-8 (BSM+) - Body ground | Always | 10 kΩ or higher |
| NG | | REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH |
|
| 4. | INSPECT OUTER MIRROR CONTROL ECU ASSEMBLY RH |
| (a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| NG | | REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH |
|
| 5. | INSPECT OUTER MIRROR RH |
(a) Remove the outer mirror RH.
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(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 |
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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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