Pinpoint Test L: The Stability/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 THE ABS MODULE STABILITY/TRACTION CONTROL SWITCH (TCYC_SW) PID
- Connect the scan tool.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: DataLogger - ABS Module.
- NOTE: Press and hold the switch for at least 1 second.
- Monitor the TCYC_SW PID while pressing and releasing the stability/traction control switch.
- Does the PID agree with the switch position?
- Yes: GO to L5.
- No: GO to L2 .
L2 CHECK THE STABILITY/TRACTION CONTROL ON/OFF CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Stability/Traction Control Switch C2361.
- Disconnect: ABS Module C135.
- Measure the resistance between ABS module C135-4, circuit CCA15 (YE/GY), harness side and stability/traction control switch C2361-2, circuit CCA15 (YE/GY), harness side.
  
  Fig 1: Measuring Resistance Between ABS Module C135-4 And Stability/Traction Control Switch C2361-2
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes: GO to L3 .
- No: REPAIR circuit CCA15 (YE/GY). TEST the system for normal operation.
L3 CHECK THE STABILITY/TRACTION CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN
- Measure the resistance between stability/traction control switch C2361- 4, circuit GD138 (BK/WH), harness side and ground.
  
  Fig 2: Measuring Resistance Between Stability/Traction Control Switch C2361- 4 And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes: GO to L4 .
- No: REPAIR circuit GD138 (BK/WH). TEST the system for normal operation.
L4 CHECK THE STABILITY/TRACTION CONTROL SWITCH FOR AN OPEN
- Measure the resistance between stability/traction control switch C2361 pin 2 and pin 4, 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?
- Yes: GO to L5 .
- No: INSTALL a new stability/traction control switch, REFER to STABILITY/TRACTION CONTROL SWITCH . TEST the system for normal operation.
L5 CHECK FOR CORRECT ABS MODULE OPERATION
- Check ABS module C135 for:
  - corrosion.
  - pushed-out pins.
  - spread terminals.
- Connect: ABS Module C135.
- Make sure the connector seats correctly, then operate the system and verify the concern is still present.
- Is the concern still present?
- Yes: INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . 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. CLEAR the DTCs. REPEAT the self-test.