Pinpoint Test L: The Traction Control System Cannot Be Disabled

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

L1 CHECK FOR ANY COMMUNICATION DTCs
- Connect the scan tool.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Retrieved and record DTCs from the IC and the ABS module.
- Are any DTCs present?
  - Yes : For ABS DTCs, GO to the ABS MODULE DTC CHART .
    For IC DTCs, REFER to the Master DTC Chart in MULTIFUNCTION ELECTRONIC MODULES article.
  - No : GO to L2.
L2 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 MY KEY SETTING displayed in the message center?
  - Yes : INFORM the customer that the key in use 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.
  - No : GO to L3.
L3 CHECK FOR VOLTAGE AT THE TRACTION CONTROL SWITCH
- Ignition OFF.
- Disconnect: Traction Switch C280.
- Ignition ON.
- Measure the voltage between traction control switch C280-7, circuit CCA15 (YE/GY), harness side and ground.
  
  Fig 1: Measuring Voltage Between Traction Control Switch C280-7, Circuit CCA15 (YE/GY), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
  - Yes : GO to L4.
  - No : GO to L5.
L4 CHECK THE SWITCH GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Measure the resistance between traction control switch C280-1, circuit GD134 (BK/VT), harness side and ground.
  
  Fig 2: Measuring Resistance Between Traction Control Switch C280-1, Circuit GD134 (BK/VT), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
  - Yes : GO to L6.
  - No : REPAIR circuit GD134 (BK/VT). TEST the system for normal operation.
L5 CHECK THE SWITCH CONTROL CIRCUIT FOR AN OPEN
- Disconnect: IC C220.
- Measure the resistance between traction control switch C280-7, circuit CCA15 (YE/GY), harness side and IC C220-22, circuit CCA15 (YE/GY), harness side.
  
  Fig 3: Measuring Resistance Between Traction Control Switch C280-7, Circuit CCA15 (YE/GY) And IC C220-22, Circuit CCA15 (YE/GY)
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
  - Yes : GO to L7.
  - No : REPAIR circuit CCA15 (YE/GY). TEST the system for normal operation.
L6 CHECK THE TRACTION CONTROL SWITCH
- Measure the resistance between traction control switch C280 pin-7 and pin-1, component side, while pressing and releasing the switch.
- Is the resistance less than 5 ohms with the switch pressed and greater than 10, 000 ohms with the switch released?
  - Yes : GO to L7.
  - No : INSTALL a new traction control switch. REFER to TRACTION CONTROL SWITCH . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
L7 CHECK FOR CORRECT IC OPERATION
- Check IC C220 for:
  - corrosion.
  - pushed-out pins.
  - spread terminals.
- Connect: IC C220.
- Make sure the connector is seated correctly, then operate the system and verify the concern is still present.
- Is the concern still present?
  - Yes : INSTALL a new IC. REFER to INFORMATION CENTER - INSTRUMENTATION, MESSAGE CENTER AND WARNING CHIMES article. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
  - No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.