Power Source Circuit [11/2017 - 10/2022]: Procedure
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2022 Lexus RC 350, 2022 Lexus RC 300, 2021 Lexus RC 350, 2021 Lexus RC 300, and 2020 Lexus RC 350. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK HARNESS AND CONNECTOR (POWER SOURCE VOLTAGE)
- Disconnect the W17 forward recognition camera connector.
*a Front view of wire harness connector
(to Forward Recognition Camera) - Turn the engine switch on (IG).
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition W17-7 (IGB) - Body ground Engine switch on (IG) 11 to 14 V - Turn the engine switch off.
- Connect the W17 forward recognition camera connector.
Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 2
- Disconnect the W17 forward recognition camera connector.
- CHECK HARNESS AND CONNECTOR (FORWARD RECOGNITION CAMERA - BODY GROUND)
- Disconnect the W17 forward recognition camera connector.
*a Front view of wire harness connector
(to Forward Recognition Camera) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition W17-10 (GND) - Body ground Always Below 1 Ω - Connect the W17 forward recognition camera connector.
Result
Proceed to OK NG
Result:
OK
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE [11/2017 - 10/2022]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
- Disconnect the W17 forward recognition camera connector.