C1244
DTC C1244
Circuit Description
The electronic brake control module (EBCM) monitors the deceleration of the vehicle for Antilock Brake System (ABS) operation.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C1244 Deceleration Sensor Circuit Open or Shorted
Conditions for Running the DTC
DTC C1244 can be set anytime the ignition switch is in the ON position.
Conditions for Setting the DTC
The EBCM detects an open or a short in the deceleration sensor circuitry.
Action Taken When the DTC Sets
The ABS warning indicator turns ON.
Conditions for Clearing the DTC
The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
Diagnostic Aids
Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction.
The following are possible causes of the malfunction:
* An open or short in deceleration signal circuit
* An open or high resistance in the deceleration voltage circuit
* An open or high resistance in the deceleration sensor ground circuit
* A deceleration sensor malfunction
* An internal EBCM malfunction
If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections. Component Tests and General Diagnostics
Test Description
The numbers below refer to the step numbers on the diagnostic table.
3. Test the deceleration sensor voltage circuit for a high resistance, an open, or a short.
4. Test the deceleration sensor ground circuit for a high resistance, an open, or a short.
