Pinpoint Test M: The Stability/Traction Control System Cannot Be Disabled
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
- M1 CHECK FOR ANY COMMUNICATION DTCs
- Connect the scan tool.
- Ignition ON.
- Check the IPC, the PCM and the ABS module for any communication DTCs.
- Are any communication DTCs present?
- Yes
: For ABS communication DTCs, GO to the ABS MODULE DTC TABLE .
For IPC and PCM communication DTCs, REFER to the Diagnostic Trouble Code (DTC) Table in MULTIFUNCTION ELECTRONIC MODULES -- FUSION, MILAN & MKZ article.
- No : GO to M2.
- M2 ISOLATE THE TRACTION CONTROL SWITCH NOTE: If a MyKey™ restricted key is in use with Advance Trac® always-on feature configured to "on", the traction control system cannot be disabled. An admin key must be used in order to enable and disable the traction control system.
- Ignition OFF.
- Disconnect: FCIM C2402 (MKZ).
- Disconnect: Traction Control/Ambient Lighting Switch C2304 (Fusion/Milan).
- For Fusion or Milan, measure the resistance between traction control/ambient lighting switch C2304 pin-7 and pin-1, component side, while pressing and releasing the traction control switch.
- For MKZ, measure the resistance between FCIM C2402 pin-7 and pin-8, 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 M3.
- No
: For Fusion or Milan,
INSTALL a new traction control switch. REFER to TRACTION CONTROL SWITCH in this service information.
For MKZ, INSTALL a new FCIM. REFER to INFORMATION & ENTERTAINMENT SYSTEMS -- FUSION, MILAN & MKZ article.
TEST the system for normal operation.
- M3 CHECK THE TRACTION CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN
- For Fusion or Milan, measure the resistance between traction control/ambient lighting switch C2304-1, circuit GD116 (BK/VT), harness side and ground.
- For MKZ, measure the resistance between FCIM C2402-8, circuit GD116 (BK/VT), harness side and ground.
- Is the resistance less than 5 ohms?
- Yes : GO to M4.
- No : REPAIR circuit GD116 (BK/VT). TEST the system for normal operation.
- M4 CHECK THE TRACTION CONTROL SWITCH CONTROL CIRCUIT FOR AN OPEN
- Disconnect: IPC C220.
- For Fusion or Milan, measure the resistance between traction control/ambient lighting switch C2304-7, circuit CCA15 (YE/GY), harness side and IPC C220-18, circuit CCA15 (YE/GY), harness side.
- For MKZ, measure the resistance between FCIM C2402-7, circuit CCA15 (YE/GY), harness side and IPC C220-18, circuit CCA15 (YE/GY), harness side.
- Is the resistance less than 5 ohms?
- Yes : GO to M5.
- No : REPAIR circuit CCA15 (YE/GY). TEST the system for normal operation.
- M5 CHECK THE TRACTION CONTROL SWITCH CONTROL CIRCUIT FOR A SHORT TO GROUND
- For Fusion or Milan, measure the resistance between traction control/ambient lighting switch C2304-7, circuit CCA15 (YE/GY), harness side and ground.
- For MKZ, measure the resistance between FCIM C2402-7, circuit CCA15 (YE/GY), harness side and ground.
- Is the resistance greater than 10,000 ohms?
- Yes : GO to M6.
- No : REPAIR circuit CCA15 (YE/GY). TEST the system for normal operation.
- M6 CHECK FOR CORRECT IPC OPERATION
- Ignition OFF.
- Check IPC C220 for:
- corrosion.
- pushed-out pins.
- spread terminals.
- Connect: IPC 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 IPC. REFER to INSTRUMENTATION, MESSAGE CENTER & WARNING CHIMES -- FUSION, MILAN & MKZ article. 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.