IG Power Source Circuit [06/2018 - ]: Procedure
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2024 Lexus ES 350, 2024 Lexus ES 250, 2023 Lexus ES 350, 2023 Lexus ES 250, and 2022 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BATTERY)
- Disconnect the G63 multiplex tilt and telescopic ECU connector.
*a Front view of wire harness connector
(to Multiplex Tilt and Telescopic ECU) - Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition G63-10 (IG) - Body ground Engine switch on (IG) 11 to 14 V Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 2
- Disconnect the G63 multiplex tilt and telescopic ECU connector.
- CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BODY GROUND)
- Disconnect the G63 multiplex tilt and telescopic ECU connector.
*a Front view of wire harness connector
(to Multiplex Tilt and Telescopic ECU) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition G63-1 (GND) - Body ground Always Below 1 Ω G63-8 (GND2) - Body ground Always Below 1 Ω Result
Proceed to OK NG
Result:
OK
REPLACE MULTIPLEX TILT AND TELESCOPIC ECU. Refer to REMOVAL [06/2018 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
- Disconnect the G63 multiplex tilt and telescopic ECU connector.