Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus IS F. 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 and multi-display connector

Fig 1: Identifying Terminals Of Navigation ECU Connector
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Measure the resistance according to the value(s) in the table below

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
q2-1 (GVO+) - q1-1 (GVI+)	Always	Below 1 Ω
q2-2 (GVO-) - q1-2 (GVI-)	Always	Below 1 Ω
q2-3 (GVG2) - q1-3 (GVG1)	Always	Below 1 Ω
q2-1 (GVO+) - Body ground	Always	10 kΩ or higher
q2-2 (GVO-) - Body ground	Always	10 kΩ or higher

Fig 2: Identifying Terminals Of Multi-Display Connector

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

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