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 |
.gif)
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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Installation
INSTALLATION PROCEDURE 1. INSTALL TRIP SWITCH (a) Attach the 2 claws to install the trip switch. 2. INSTALL NO. 1 INSTRUMENT PANEL SAFETY PAD SUB-ASSEMBLY Click here 3. INSTALL INSTRUMENT SIDE PANEL LH Click here
Components
COMPONENTS ILLUSTRATION *A for 2WD *B for AWD *1 HOOD LOCK ASSEMBLY *2 NO. 6 INVERTER BRACKET *3 UPPER RADIATOR SUPPORT SUB-ASSEMBLY *4 FRONT RADIATOR SIDE AIR GUIDE PLATE RH *5 FRONT RADIATOR SIDE AIR GUIDE PLATE LH *6 WIRE HARNESS N*m (kgf*cm, ft.*lbf
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