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Pinpoint Test E: The Traction Control System Is Inoperative Or Cannot Be Disabled Using The Message Center

WARNING: This page is about a different car, the 2023 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If equipped, MyKey allows users to configure traction control to be either always on or selectable. If a MyKey restricted key is in use with the MyKey traction control feature configured to always on, traction control cannot be disabled. An admin key must be used to enable and disable traction control.
NOTE: This test requires the use of at least 2 ignition keys (passive or IKT) programmed to the vehicle; one admin ignition key and one restricted ignition key.

Normal Operation and Fault Conditions 

The stability-traction control disabled indicator (sliding car OFF icon) in the IPC provides traction control system status to the driver. When the driver deactivates the traction control, the APIM sends a message to the IPC over the HS-CAN3. The IPC then sends a message to the GWM over the HS-CAN3 indicating the driver has requested the traction control to be disabled. The GWM relays this message to the ABS module over the FD-CAN. The ABS module continues to monitor for excessive wheel spin, but no longer takes any action when a traction event is detected.

After receiving the traction control status message from the IPC, the ABS module then sends a message to the GWM over the FD-CAN to illuminate the stability-traction control disabled indicator (sliding car OFF icon). The GWM relays this message to the IPC over the HS-CAN3. The IPC responds by illuminating the stability-traction control disabled indicator (sliding car OFF icon). The traction control system remains deactivated until the driver changes the traction control state in the message center or until the ignition is cycled.

DTC Fault Trigger Conditions 

DTC Description Fault Trigger Condition
ABS C1109:24 Vehicle Dynamics Control Switch: Signal Stuck High Sets when the message from the IPC has been sent for too long. This is likely due to an internal failure the IPC.

Possible Sources 

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