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 (MULTI-DISPLAY - NAVIGATION ECU)

Disconnect the multi-display connector p1 and navigation ECU connector p3.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
MCO+ -MCO+	Always	Below 1 Ω
MCO- - MCO-	Always	Below 1 Ω
SGND - SGND	Always	Below 1 Ω
MCO+ - Body ground	Always	10 kΩ or higher
MCO- - Body ground	Always	10 kΩ or higher

Fig 1: Identifying Multi-Display Connector P1 And Navigation ECU Connector P3

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

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