Navigation Voice Speaker Circuit: Wiring Diagram
WARNING: This page is about a different car, the 2006 Lexus IS 350 and 2006 Lexus IS 250. 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 the navigation ECU connector p2.
- Measure the resistance according to the value(s) in the table below.STANDARD RESISTANCE
Tester connection Condition Specified condition VOI- - S1- Always Below 1 Ω VOI+ - S1+ Always Below 1 Ω VOI- - Body ground Always 10 kΩ or higher VOI+ - Body ground Always 10 kΩ or higher
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 J51 and stereo component amplifier connector P30.
- Measure the resistance according to the value(s) in the table below.STANDARD RESISTANCE
Tester connection Condition Specified condition IVO+ - II1+ Always Below 1 Ω IVO- - II1- Always Below 1 Ω IVO+ - Body ground Always 10 kΩ or higher IVO- - Body ground Always 10 kΩ or higher
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE