Inspection Procedure
WARNING: This page is about a different car, the 2007 Lexus GX 470. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK OPERATION OF SPEEDOMETER
- Drive the vehicle and check if the function of the speedometer in the combination meter is normal.
OK: Actual vehicle speed and the speed indicated on the speedometer are the same.
HINT:
The vehicle speed sensor is functioning normally when the indication on the speedometer is normal.
NG: GO TO METER/GAUGE SYSTEM (See HOW TO PROCEED WITH TROUBLESHOOTING )
OK: Go to Next Step
- Drive the vehicle and check if the function of the speedometer in the combination meter is normal.
- CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - COMBINATION METER)
- Disconnect the N8 ECU connector.
- Disconnect the C11 meter connector.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
NAVIGATION ECU - COMBINATION METERTester Connection Condition Specified Condition N8-4 (SPD) - C11-14 Always Below 1 Ω N8-4 (SPD) - Body ground Always 10 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE NAVIGATION ECU