C1236

DTC C1236





Circuit Description
The EBCM monitors the voltage level available for system operation. A low voltage condition prevents the system from operating properly.

Conditions for Running the DTC
The vehicle speed is greater than 8 km/h (5 mph).

Conditions for Setting the DTC
The ignition voltage is less than 10.5 volts.
AND
One of the following conditions exists for 0.72 seconds:
^ With the ABS inactive, the solenoid relay voltage is less than 10.5 volts.
^ With the ABS active, the solenoid relay voltage is less than 9.6 volts.

Action Taken When the DTC Sets
If equipped, the following actions occur:
^ The EBCM disables the ABS/TCS/VSES for the duration of the ignition cycle.
^ The ABS indicator turns ON.
^ The Traction Control indicator turns ON.
^ The DIC displays the Service! Stability System message.

Conditions for Clearing the DTC
^ The condition for the DTC is no longer present (the DTC is not current) and you used the scan tool Clear DTC function.
^ The condition for the DTC is no longer present (the DTC is not current) and you used the On-Board Diagnostics Clear DTC function.
^ The EBCM automatically clears the history DTC when a current DTC is not detected in 50 consecutive drive cycles.

Diagnostic Aids
^ Test the charging system. Refer to Diagnostic System Check - Engine Electrical.
^ Possible causes of this DTC are the following conditions:
^ A charging system malfunction
^ An excessive battery draw
^ A weak battery
^ A faulty system ground

Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. Uses the scan tool in order to inspect the voltage to the EBCM.
3. Uses the scan tool in order to inspect the voltage to the body control module (PCM). A low voltage value in multiple modules indicates a concern in the charging system.
5. Verifies that the condition is still present.