Pinpoint Test H: Traction Control Cannot Be Disabled

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.

H1 VERIFY THAT THE KEY IN USE IS NOT RESTRICTED
- Ignition ON.
- Monitor the message center while pressing the stability/traction control switch.
- Is ADVTRAC ON MYKEY SETTING displayed in the message center?
1. Yes: INFORM the customer that the key being used is MyKey™-restricted. If necessary, REFER to the Owner's Literature for information regarding the programming of MyKey™ features. Using an Administrator key, TEST the system for normal operation.
2. No: GO to H2 .
H2 CHECK THE STABILITY/TRACTION CONTROL SWITCH
- Ignition OFF.
- Disconnect: Stability/Traction Control Switch C280.
- Measure the resistance between the stability/traction control switch C280-6, component side and C280-2, component side while pressing and releasing the switch.
- Is the resistance greater than 10,000 ohms with the switch released and less than 5 ohms with the switch pressed?
1. Yes: GO to H3 .
2. No: INSTALL a new stability/traction control switch. REFER to STABILITY/TRACTION CONTROL SWITCH . TEST the system for normal operation.
H3 CHECK THE STABILITY/TRACTION CONTROL SWITCH SIGNAL CIRCUIT FOR AN OPEN
- Disconnect: ABS Module C155.
- Measure the resistance between the ABS module C155-4, circuit CCA15 (YE/GY), harness side and stability/traction control switch C280-6, circuit CCA15 (YE/GY), harness side.
  
  Fig 1: Checking Stability/Traction Control Switch Signal Circuit For An Open
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
1. Yes: GO to H4 .
2. No: REPAIR circuit CCA15 (YE/GY). TEST the system for normal operation.
H4 CHECK THE STABILITY/TRACTION CONTROL SWITCH SIGNAL CIRCUIT FOR A SHORT TO GROUND
- Measure the resistance between the ABS module C155-4, circuit CCA15 (YE/GY), harness side and ground.
  
  Fig 2: Checking Stability/Traction Control Switch Signal Circuit For Short To Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10,000 ohms?
1. Yes: GO to H5 .
2. No: REPAIR circuit CCA15 (YE/GY). TEST the system for normal operation.
H5 CHECK THE STABILITY/TRACTION CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN
- Measure the resistance between the stability/traction control switch C280-2, circuit GD114 (BK/BU), harness side and ground.
  
  Fig 3: Checking Stability/Traction Control Switch Ground Circuit For An Open
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
1. Yes: GO to H6 .
2. No: REPAIR circuit GD114 (BK/BU). TEST the system for normal operation.
H6 CHECK FOR CORRECT ABS MODULE OPERATION
- Check ABS module C155 for:
  - corrosion.
  - pushed-out pins.
  - spread terminals.
- Connect: ABS Module C155.
- Connect: Stability/Traction Control Switch C280.
- Make sure the connector seats correctly. Operate the system and verify the concern is still present.
- Is the concern still present?
1. Yes: INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . TEST the system for normal operation.
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.