Voice Guidance Circuit between Radio Receiver and Stereo Component Amplifier [06/2018 - 09/2022]: Procedure
WARNING: This page is about a different car, the 2022 Lexus ES 300h, 2021 Lexus ES 300h, 2020 Lexus ES 300h, and 2019 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY)
- Disconnect the G7 radio receiver assembly connector.
- Disconnect the G9 stereo component amplifier assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester connection Condition Specified condition G7-3 (RL+) - G9-15 (II1+) Always Below 1 Ω G7-8 (RL-) - G9-14 (II1-) Always Below 1 Ω G9-18 (SLD1) - Body ground Always 10 kΩ or higher G7-3 (RL+) or G9-15 (II1+) - Body ground Always 10 kΩ or higher G7-8 (RL-) or G9-14 (II1-) - Body ground Always 10 kΩ or higher Result
Proceed to OK NG
Result:
OK
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE [06/2018 - 10/2019] , or refer to PROBLEM SYMPTOMS TABLE [10/2019 - 08/2020] , or refer to PROBLEM SYMPTOMS TABLE [08/2020 - 08/2021] , or refer to PROBLEM SYMPTOMS TABLE [08/2021 - 09/2022]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR