C1254

Circuit Description
When EBCM relay is activated (turned on) voltage is supply to valve solenoids and pump motor. This DTC identifies a malfunction with the EBCM loosing ground or battery, or when battery is disconnected while running.

Conditions for Running the DTC
The ABS/ETS/TCS conditions are normal.

Conditions for Setting the DTC
DTC C1254 is set when an running reset occurs. A running reset is when the vehicle is running and functions are normal then suddenly a loss of power or ground connection occurs to the EBCM.

Action Taken When the DTC Sets
^ ABS/ETS/TCS is disabled.
^ ABS/ETS/TCS Indicators are turned on.
^ TIM goes into Autolearn mode after system recovery.

Conditions for Clearing the DTC
^ Condition for DTC is no longer present and scan tool clear DTC function is used.
^ 100 ignition cycles have passed with no DTCs detected.

Diagnostic Aids
^ Possible causes for DTC C1254 to set are:
- Running reset occurred.
- Loss of EBCM ground.
- Sudden drop in voltage.
- Poor or loose grounds connections.
- Poor or loose power connections.
- Battery disconnected due to corrosion or loose battery terminals.
- Internal EBCM malfunction.

^ It is very important that a thorough inspection of the wiring and connectors be performed. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction.
^ If an intermittent malfunction exists refer to Testing for Intermittent and Poor Connections.