ON VEHICLES EQUIPPED WITH ENHANCED TRACTION SYSTEM (ETS), THE "ETS OFF" INDICATOR LAMP MAY COME ON AND ETS AND CRUISE CONTROL MIGHT BECOME DISABLED. THERE MAY BE NO ABS OR PCM DIAGNOSTIC TROUBLE CODES (DTC'S) STORED AND THERE MAY BE NO "CHECK ENGINE" LAMP ON.
THE PCM SETS A TYPE "C" OR "D" FAILURE RECORD WHICH SENDS A MESSAGE TO THE ELECTRONIC BRAKE CONTROL MODULE (EBCM) TO TURN THE "ETS OFF" INDICATOR ON AND TO DISABLE ETS. THE PCM CAN THEN DISABLE CRUISE CONTROL, BUT MAY NOT TURN ON A CORRESPONDING "CHECK ENGINE" LAMP. THESE TYPE "C" OR "D" FAILURE RECORDS ARE NOT STORED IN THE NORMAL CURRENT OR HISTORY MENUS.
THE TECHNICIAN IS INSTRUCTED TO CHECK NORMAL OPERATION OF THE "ETS OFF" SWITCH AND THE ETS SYSTEM. THE TECHNICIAN IS THEN INSTRUCTED TO CHECK FOR FAILURE RECORDS AND DIRECTED TO SECTION 6E3-A OF THE SERVICE MANUAL, SEE ATTACHED CHART. WHEN THE PCM FAILURE RECORD IS CORRECTED, NORMAL OPERATION OF THE ETS SYSTEM AND CRUISE CONTROL SHOULD RETURN.
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