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 (MULTI-DISPLAY - NAVIGATION ECU)

Disconnect the multi-display connector and the navigation ECU connector

Fig 1: Identifying Terminals Of Multi-Display Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
p2-8 (VOI-) - p1-10 (SI-)	Always	Below 1 Ω
p2-9 (VOI+) - p1-11 (SI+)	Always	Below 1 Ω
p2-8 (VOI-) - Body ground	Always	10 kΩ or higher
p2-9 (VOI+) - Body ground	Always	10 kΩ or higher

Fig 2: Identifying Terminals Of Navigation ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - STEREO COMPONENT AMPLIFIER)

Disconnect the multi-display connector and stereo component amplifier connector.

Fig 3: Identifying Terminals Of Multi-Display Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
J51-22 (IVO+) - P30-15 (111+)	Always	Below 1 Ω
J51-21 (IVO-) - P30-14 (111-)	Always	Below 1 Ω
J51-22 (IVO+) - Body ground	Always	10 kΩ or higher
J51-21 (IVO-) - Body ground	Always	10 kΩ or higher

Fig 4: Identifying Terminals Of Stereo Component Amplifier Connector

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

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