Pinpoint Test H: The Traction Control Is Inoperative

Test Step 

H1 CHECK FOR DTCS 

• Key in OFF position.
• Connect the diagnostic tool.
• Key in ON position.
• Enter the following diagnostic mode on the diagnostic tool: Self-test.
• Retrieve and document hard fault, continuous DTCs.
• Are any DTCs retrieved? 

Result / Action to Take 

Yes 

Go to Traction Control Module DTC Index  .

No 

Go to H2.

Test Step 

H2 CHECK THE ABS OPERATION 

• Test drive the vehicle and carry out several anti-lock stops.
• Does the ABS operate correctly? 

Result / Action to Take 

Yes 

Go to H3.

No 

Go to SYMPTOM CHART  .

Test Step 

H3 CHECK THE TRACTION CONTROL OFF INPUT TO THE TRACTION CONTROL MODULE FOR A SHORT TO GROUND 

• Key in OFF position.
• Disconnect: Traction Control Module C135.
• Engage the traction control switch to the disable position.
• Measure the resistance between the traction control module C135 pin 38, circuit 91S-CF54 (BK/WH), harness side and ground.
  Fig 1: Checking Traction Control Off Input To Traction Control Module For Short To Ground

  Courtesy of FORD MOTOR CO.
• Is the resistance less than 5 ohms with the traction control switch pressed and greater than 10,000 ohms with the traction control switch released? 

Result / Action to Take 

Yes 

INSTALL a new HCU. REFER to ANTI-LOCK CONTROL . REPEAT the self-test. TEST the system for normal operation.

No 

Go to H4.

Test Step 

H4 CHECK THE TRACTION CONTROL SWITCH GROUND 

• Disconnect: Traction Control Switch C2267.
• Measure the resistance between the traction control switch C2267 pin 1, circuit 91-CF54 (BK/WH), harness side and ground.
  Fig 2: Checking Traction Control Switch Ground

  Courtesy of FORD MOTOR CO.
• Is the resistance less than 5 ohms? 

Result / Action to Take 

Yes 

Go to H5.

No 

REPAIR the circuit. TEST the system for normal operation.

Test Step 

H5 CHECK CIRCUIT 91S-CF54 (BK/WH) 

• Measure the resistance between the traction control switch C2267 pin 2, circuit 91S-CF54 (BK/WH), harness side and the traction control module C135 pin 38, circuit 91S-CF54 (BK/WH), harness side; and between the traction control switch C2267 pin 2, circuit 91S-CF54 (BK/WH), harness side and ground.
  Fig 3: Checking Circuit 91S-CF54 (BK/WH)

  Courtesy of FORD MOTOR CO.
• Is the resistance less than 5 ohms between the traction control switch and the traction control module and greater than 10,000 ohms between the traction control switch and ground? 

Result / Action to Take 

Yes 

INSTALL a new traction control switch. TEST the system for normal operation.

No 

REPAIR the circuit. TEST the system for normal operation.