Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Reverse Signal Circuit between Radio Receiver Assembly and Navigation ECU
DESCRIPTION
This circuit includes the navigation ECU and radio receiver assembly.
WIRING DIAGRAM
PROCEDURE
| 1. | CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NAVIGATION ECU) |
(a) Disconnect the J149 radio receiver assembly connector.
(b) Disconnect the J153 navigation ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| J149-28 (REV2) - J153-19 (REV2) | Always | Below 1 Ω |
| J149-28 (REV2) or J153-19 (REV2) - 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 |
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Start Up Signal Circuit between Radio Receiver Assembly and Navigation ECU
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Auxiliary boxes (if equipped)
Door pockets
Bottle holders
Console box
Cup holders
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Auxiliary boxes (if equipped)
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Bottle holders
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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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