With Lexus Hand-Held Tester
- Using tester connected to Data Link Connector No. 3 (DLC3), enter DATALIST mode. Test drive vehicle and check speedometer parameter. If parameter value changes with vehicle speed, replace instrument cluster. If parameter value does not change, go to next step.
- Check harness and connector between instrument cluster and ABS ECU. See WIRING DIAGRAMS . Repair as necessary. If circuits are okay, check speed sensor circuit. See appropriate ANTI-LOCK/TRACTION CONTROL SYSTEMS article in BRAKES.