Code 10, Stoplight Switch On Constantly
- Turn ignition off. Disconnect RWAL EBCM harness connector from RWAL EBCM. Turn ignition on. Measure voltage between RWAL EBCM harness connector terminal No. 8 (Green/White wire) and ground.
- If reading is less than 10 volts, replace RWAL EBCM. See RWAL ELECTRONIC BRAKE CONTROL MODULE under REMOVAL & INSTALLATION. If reading is 10-15 volts, replace or adjust stoplight switch or repair short to voltage in Green/White wire between RWAL EBCM, stoplight switch and stoplights.