Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Reverse Signal Circuit between Radio Receiver Assembly and Navigation ECU

Lexus RX (RX 350L, RX450h) 2016-2024 Repair 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 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

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    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

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