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Home >> Lexus >> 2009 >> ES 350 V6-3.5L (2GR-FE) >> Repair and Diagnosis >> Accessories and Optional Equipment >> Navigation System >> Testing and Inspection >> Component Tests and General Diagnostics >> Navigation ECU Power Source Circuit
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Navigation ECU Power Source Circuit








NAVIGATION: NAVIGATION SYSTEM: Navigation ECU Power Source Circuit

Navigation ECU Power Source Circuit

DESCRIPTION

This is the power source circuit to operate the navigation ECU.
The power is sent from the battery to the navigation ECU through the multi-display.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT NAVIGATION ECU




(a) Disconnect the navigation ECU connector p2.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - MULTI-DISPLAY)
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - MULTI-DISPLAY)




(a) Disconnect the navigation ECU connector p2 and multi-display connector p1.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MULTI-DISPLAY
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