Pinpoint Test H: The Traction Control Is Inoperative

WARNING: This page is about a different car, the 2004 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.

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 .

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.

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.

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.

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.

REPAIR the circuit. TEST the system for normal operation.