Lexus NX: Reverse Signal Circuit between Radio Receiver Assembly and Navigation ECU
Lexus NX Service Manual / Audio & Visual & Telematics / Navigation / Multi Info Display / Navigation System / Reverse Signal Circuit between Radio Receiver Assembly and Navigation ECU
DESCRIPTION
This circuit includes the navigation ECU and radio and display receiver assembly.
WIRING DIAGRAM
PROCEDURE
| 1. | CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NAVIGATION ECU) |
(a) Disconnect the I153 radio receiver assembly connector.
(b) Disconnect the I173 navigation ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I153-28 (REV2) - I173-19 (REV2) | Always | Below 1 Ω |
| I153-28 (REV2) - Body ground | Always | 10 kΩ or higher |
| OK | .gif) | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
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| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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