C1294

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CIRCUIT DESCRIPTION
This DTC is run to determine the proper operation of the brake switch. This is important because ABS is activated when the brake switch is ON and turned OFF when the brake is OFF. If the brake switch is always ON, ABS operation will always be requested resulting in potential modulator cycling on rough roads. Additionally, this malfunction will most likely result in a dead battery (due to the brake lamps staying ON) if the driver is not informed of this malfunction.

CONDITIONS FOR SETTING THE DTC
DTC C1294 can be set if the vehicle speed reaches at least 40 km/h (25 mph). If the brake was never OFF during two consecutive drive cycles, a malfunction exists.

ACTION TAKEN WHEN THE DTC SETS
A malfunction DTC is stored, however ABS is not disabled.

CONDITIONS FOR CLEARING THE DTC
Conditions for the malfunction are no longer present and the scan tool CLEAR DTCs function is used. One hundred ignition switch key cycles have passed with no malfunctions detected.

DIAGNOSTIC AIDS
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 scan tool.

Any circuitry that is suspected of causing the intermittent complaint should be thoroughly checked 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.