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Home >> Oldsmobile >> 1999 >> Intrigue GL, 3.5 H >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Anti-Lock Brake System With Traction Control System - Abs-VI) >> Diagnostic Tests >> DTC C1255: EBCM/EBTCM Internal Malfunction

DTC C1255: EBCM/EBTCM Internal Malfunction

WARNING: This page is about a different variant/trim than selected.
  1. Perform diagnostic system check. See DIAGNOSTIC SYSTEM CHECK. After performing diagnostic system check, go to next step.
  2. Turn ignition on, with engine off. Install scan tool. Using scan tool, display DTCs. If DTC C1255 is set as current, go to next. If DTC C1255 is not set as current, go to step 5)  .
  3. Using scan tool, clear DTCs. Test drive vehicle for 3 drive cycles. Using scan tool, display DTCs. If DTC C1255 is set as current, go to next. If DTC C1255 is not set as current, go to step 5)  .
  4. Replace EBCM/EBTCM. See ELECTRONIC BRAKE CONTROL MODULE/ ELECTRONIC BRAKE & TRACTION CONTROL MODULE (EBCM/EBTCM)  under REMOVAL & INSTALLATION.
  5. Malfunction is not currently present. An intermittent may be caused by a poor connection, rubbed through wire insulation, or a broken wire inside insulation. Frequency of malfunction can be determined by using enhanced diagnostic function of scan tool.

Check for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, poor terminal-to-wiring connections, or damaged wiring harness. After diagnosis is complete, clear DTCs and test drive vehicle for 3 drive cycles to verify DTC does not reset. Drive cycle consists of starting vehicle, driving vehicle faster than 10 MPH, stopping vehicle, and then turning ignition off.

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