C1292 - Open Brake Lamp Switch When ABS Was Required

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CIRCUIT DESCRIPTION
DTC C1292 determines the proper operation of the brake switch. Proper operation of the brake switch is important because the brake switch activates the ABS when the brake switch is on. If the brake switch is off, the ABS will never activate. This malfunction is only detected when ABS is required because it is difficult to detect the malfunction under normal braking conditions.

CONDITIONS FOR SETTING THE DTC
DTC C1292 can set if the vehicle speed is greater than 8 km/h (5 mph).
A malfunction exists if the following conditions occur:
- The brake was not ON.
- A release was required on two channels for 0.5 second.

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

DIAGNOSTIC AIDS
If the malfunction is not current, use wiggle test on the wiring harness to pinpoint an intermittent malfunction in the motor circuitry or connections. Thoroughly inspect any circuitry that may be causing 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
- Rubbed-through wire insulation
- A broken wire inside the insulation