Lexus NX: Start Up Signal Circuit between Radio Receiver Assembly and Navigation ECU
Lexus NX Service Manual / Audio & Visual & Telematics / Navigation / Multi Info Display / Navigation System / Start Up 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 |
|---|---|---|
| I153-7 (SUP) - I173-21 (SUP) | Always | Below 1 Ω |
| I153-7 (SUP) - 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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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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DESCRIPTION This is the power source circuit to operate the radio receiver assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
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Adjustment
ADJUSTMENT PROCEDURE 1. INSPECT SHIFT LEVER POSITION (a) While moving the shift lever from N to each position, check that the lever moves smoothly and that the shift position indicator comes on properly according to the shift lever position. (b) Put the vehicle into the READY-on state and check the
Outside Vehicle
General MaintenanceGENERAL MAINTENANCE CAUTION / NOTICE / HINT
These are maintenance and inspection items that are considered to be the owner's responsibility.
The owner can do them or they can have them done at a service center. These items include those that should be checked on a daily basis,
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