Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Voice Guidance Circuit between Radio Receiver and Stereo Component Amplifier
DESCRIPTION
Using this circuit, the radio receiver assembly sends signals to the stereo component amplifier assembly.
WIRING DIAGRAM
PROCEDURE
| 1. | CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY) |
(a) Disconnect the J150 radio receiver assembly connector.
(b) Disconnect the J156 stereo component amplifier assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester connection | Condition | Specified condition |
|---|---|---|
| J150-3 (RL+) - J156-15 (II1+) | Always | Below 1 Ω |
| J150-8 (RL-) - J156-14 (II1-) | Always | Below 1 Ω |
| J156-18 (SLD1) - Body ground | Always | 10 kΩ or higher |
| J150-3 (RL+) or J156-15 (II1+) - Body ground | Always | 10 kΩ or higher |
| J150-8 (RL-) or J156-14 (II1-) - Body ground | Always | 10 kΩ or higher |
| OK |  | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Vehicle Speed Signal Circuit between Stereo Component Amplifier and Combination Meter
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Microphone Circuit
DESCRIPTION
The radio receiver assembly and telephone microphone assembly are connected to each other using the microphone connection detection signal lines.
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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