Speedometer Operational Test (Land Cruiser)

Ensure tires are correct size and inflated properly. Place vehicle on standard speedometer tester. Compare tester with speedometer readings. See SPEEDOMETER TEST  table. If vehicle speedometer readings are not within allowable range, replace speedometer. If speedometer does not operate at all, check speedometer resistance. If speedometer resistance is okay, check vehicle speed sensor. See SYSTEM/COMPONENT TESTS article in the ENGINE PERFORMANCE section.