C1276

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CIRCUIT DESCRIPTION
DTC 1276 identifies a brake solenoid valve that cannot be energized. The malfunction may be caused by one of the following conditions:
- An open in the solenoid valve circuitry
- The solenoid valve is always energized due to a short to ground in the solenoid valve circuitry between the driver and the brake solenoid valve.
- An open will not allow proper ABS operation, but the short to ground simply turns on the brake solenoid valve. A path for base brakes is still allowed once the motor rehomes and the check ball is lifted off its seat during key to RUN initialization.

CONDITIONS FOR SETTING THE DTC
DTC C1276 can set only when the brake solenoid valve is commanded off while the Electronic Brake Control Relay is enabled.

A malfunction exists if the Electronic Brake Traction Control Module (EBTCM) detects the left front brake solenoid valve control circuit voltage is not within specifications.

ACTION TAKEN WHEN THE DTC SETS
- A malfunction Diagnostic Trouble Code (DTC) stores.
- The ABS/ETS disables.
- The amber ABS/ETS warning indicators turn 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.
- 100 drive cycles pass with no DTCs detected.

DIAGNOSTIC AIDS
The following conditions may cause an intermittent malfunction:
- A poor connection
- Rubbed-through wire insulation
- A broken wire inside the insulation Use the enhanced diagnostic function of the Scan Tool in order to measure the frequency of the malfunction. Refer to the Scan Tool manual or Scan Tool Diagnosis for the procedure.

Thoroughly inspect any circuitry that may cause the intermittent complaint for the following conditions:
- Backed out terminals
- Improper mating
- Improperly formed or damaged terminals
- Poor terminal-to-wiring connections
- Physical damage to the wiring harness