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Code 10, Stoplight Switch On Constantly

  1. 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.
  2. 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.
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