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Pinpoint Test H: DTC C1093 - Traction Control Disable Switch Circuit Failure And/Or The Traction Control System Cannot Be Disabled

CAUTION: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.
  1. H1 MONITOR THE INSTRUMENT CLUSTER PID 
    • Key in ON position.
    • Monitor the instrument cluster traction control switch status PID while pressing the traction control disable switch repeatedly.
    • Does the PID agree with the switch position? 
    1. YES  : Go to  H6.
    2. NO  : Go to  H2.
  2. H2 CHECK THE TRACTION CONTROL SWITCH INPUT 
    • Key in OFF position.
    • Disconnect: Instrument Cluster C220
      • Fig 1: Checking Traction Control Switch Input
      GF0015402Courtesy of FORD MOTOR CO.
    • Measure the resistance between instrument cluster C220-20, circuit 1412 (WH/PK), harness side and ground while pressing and releasing the traction control switch.
    • Is the resistance less than 5 ohms with the switch pressed and greater than 10,000 ohms with the switch released? 
    1. YES  : Go to  H3.
    2. NO  : INSTALL a new traction control switch. REFER to Traction Control Switch . CLEAR the DTCs. REPEAT the self-test.
  3. H3 CHECK CIRCUIT 1412 (WH/PK) FOR A SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: Traction Control Switch C2039
      • Fig 2: Measuring Resistance Between Traction Control Switch C2039-7, Circuit 1412 (WH/PK) & Ground
      GF0015403Courtesy of FORD MOTOR CO.
    • Measure the resistance between traction control switch C2039-7, circuit 1412 (WH/PK), harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : REPAIR circuit 1412 (WH/PK). CLEAR the DTCs. REPEAT the self-test.
    2. NO  : Go to  H4.
  4. H4 CHECK CIRCUIT 1412 (WH/PK) FOR AN OPEN 
      Fig 3: Checking Circuit 1412 (WH/PK) For Open
      GF0015404Courtesy of FORD MOTOR CO.
    • Measure the resistance between instrument cluster C220-20, circuit 1412 (WH/PK), harness side and traction control switch C2039-7, circuit 1412 (WH/PK), harness side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : REPAIR circuit 1412 (WH/PK). CLEAR the DTCs. REPEAT the self-test.
    2. NO  : Go to  H5.
  5. H5 CHECK CIRCUIT 1205 (BK) FOR AN OPEN 
      Fig 4: Checking Circuit 1205 (BK) For Open
      GF0000898Courtesy of FORD MOTOR CO.
    • Measure the resistance between traction control switch C2039-1, circuit 1205 (BK), harness side and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : REPAIR circuit 1205 (BK). CLEAR the DTCs. REPEAT the self-test.
    2. NO  : INSTALL a new traction control switch. REFER toTraction Control Switch . CLEAR the DTCs. REPEAT the self-test.
  6. H6 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION 
    • Disconnect: Instrument Cluster C220
    • Check for:
      • corrosion.
      • spread terminals.
      • pushed-out pins.
    • Connect the instrument cluster connector and make sure it seats correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER . CLEAR the DTCs. REPEAT the self-test.
    2. NO  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
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