Inspection Procedure

WARNING: This page is about a different car, the 2007 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - MULTI-DISPLAY)

Disconnect the navigation ECU connector q1 and multi-display connector q1.

Measure the resistance according to the value(s) in the table below.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
GVI+ - GVI+	Always	Below 1 Ω
GVI- - GVI-	Always	Below 1 Ω
GVG1 - GND	Always	Below 1 Ω
GVI+ - Body ground	Always	10 kΩ or higher
GVI- - Body ground	Always	10 kΩ or higher

Fig 1: Identifying Navigation ECU Connector Q1 And Multi-Display Connector Q1

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE