C1276

DTC C1276: Left Front Solenoid Circuit Open Or Shorted To Ground (Part 1 Of 2):

DTC C1276: Left Front Solenoid Circuit Open Or Shorted To Ground (Part 2 Of 2):

DTC C1276 Schematic:

Circuit Description
This DTC identifies a solenoid that cannot be energized due to an open in its circuitry, or a solenoid that is always energized due to a short to battery in its circuitry between the driver and the solenoid. An open will not allow proper ABS operation, but the short to battery simply turns ON the solenoid. A path for base brakes is still allowed once the motor re-homes and the check ball is lifted off its seat during initialization.

Conditions for Setting the DTC
This DTC will set when the following conditions are met:
^ The Electronic Brake Control Module (EBCM) detects a short to voltage or open in CKT 1288 and/or open in CKT 855.
^ This DTC can be set only when the solenoid is

Action Taken When the DTC Sets
A malfunction DTC is stored, ABS is disabled, and the amber ABS indicator lamp is turned ON.

Conditions for Clearing the DTC
^ Conditions for the malfunction are no longer present and the Tech 2 scan tool Clear DTC Information function is used.
^ One hundred drive cycles have passed with no malfunctions detected.

Diagnostic Aids
The following list contains items that need to be inspected when diagnosing this system:
^ Open/high resistance or short to voltage of the left front solenoid CKT 1288 and/or open in CKT 855.
^ Faulty left front solenoid (high/infinite coil resistance).
An intermittent malfunction is most likely caused by a poor connection, rubbed through wire insulation, or a wire that is broken inside the insulation.

The frequency of the malfunction can be checked by using the Enhanced Diagnostic function of the Tech 2 scan tool, as described in Enhanced Diagnostics.

Inspect the following harness connectors for backed-out terminals, improper mating, broken locks, improperly formed or damaged terminals, poor terminal to wiring connections or physical damage to the wiring harness before component replacement:
^ Left front ABS solenoid connector.
^ EBCM connector C1.


Test Description
The numbers below refer to step numbers on the diagnostic table.
2. Checks for a short to ground in CKT 1288.
3. Checks for an open in CKT 1288.
2. Checks for a short to ground in CKT 855.
4. Checks for an open in CKT 855.
5. Checks resistance of the ABS solenoid.