Component Tests: Speedometer

WARNING: This page is about a different car, the 2003 Lexus GS 430, 2003 Lexus GS 300, 2002 Lexus GS 430, and 2002 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.

On-Vehicle Inspection - Using a speedometer tester, inspect the speedometer for allowable indication error and check the operation of the odometer. Tire wear and tire over or under inflation will increase the indication error. See INSPECTING SPEEDOMETER ON-VEHICLE table. If the error is excessive, replace the speedometer. See COMBINATION METER under REMOVAL & INSTALLATION.

INSPECTING SPEEDOMETER ON-VEHICLE

Standard Indication		Allowable Range
USA (mph)
20		18-24
40		38-44
60		56-66
80		78-88
100		98-110
120		118-132
Canada (km/h)
20		17-24
40		38-46
60		57.5-67
80		77-88
100		96-109
120		115-130
140		134-151.5
160		153-173

Resistance Inspection - Measure the resistance between terminals with fixing pointer to the stopper. See CONNECTOR IDENTIFICATION . See INSPECTING RESISTANCE WITH FIXING POINTER TO STOPPER table. If resistance value is not as specified, replace the meter. See COMBINATION METER under REMOVAL & INSTALLATION.