Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Start Up 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 |
|---|---|---|
| J149-7 (SUP) - J153-21 (SUP) | Always | Below 1 Ω |
| J149-7 (SUP) or J153-21 (SUP) - 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 |
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) Disco ...
Microphone Circuit
DESCRIPTION
The radio receiver assembly and telephone microphone assembly are connected to each other using the microphone connection detection signal lines.
Using this circuit, the DCM (telemati ...
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Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Can Communication System: Suspension Control ECU Communication Stop Mode
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*: Use the Techstream.
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In troubleshooting, confirm that the problem symptoms h ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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