DTC C1A34-71: LED Controller in Driver Monitor Camera Control System Actuator Stuck [11/2021 - ]: Procedure
WARNING: This page is about a different car, the 2024 Lexus LS 500h, 2023 Lexus LS 500h, and 2022 Lexus LS 500h. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK HARNESS AND CONNECTOR (DRIVER MONITOR ECU ASSEMBLY - DRIVER MONITOR CAMERA)
- Disconnect the L205 driver monitor ECU assembly connector.
- Disconnect the G168 driver monitor camera connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition L205-3 (LP) - G168-1 (LP) Always Below 1 Ω L205-2 (LS) - G168-2 (LS) Always Below 1 Ω L205-3 (LP) - G168-2 (LS) Always 10 kΩ or higher L205-3 (LP) - Body ground Always 10 kΩ or higher L205-2 (LS) - Body ground Always 10 kΩ or higher Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 2
- REPLACE DRIVER MONITOR CAMERA
- Replace the driver monitor camera with a new or known good one.
Refer to REMOVAL [11/2021 - ]
Result
Proceed to NEXT
Result:
NEXT
See step 3
- Replace the driver monitor camera with a new or known good one.
- CHECK DTC
- Clear the DTCs.
Chassis > Driver Monitor Camera Control > Clear DTCs
- Check for DTCs.
Chassis > Driver Monitor Camera Control > Trouble Codes
Result
Result Proceed to DTCs is not output. A DTC C1A34-71 is output. B
Result:
A
END (DRIVER MONITOR CAMERA IS DEFECTIVE)
Result:
B
REPLACE DRIVER MONITOR ECU ASSEMBLY. Refer to REMOVAL [11/2021 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]
- Clear the DTCs.