C1294

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Circuit Description
Diagnostic Trouble Code (DTC) C1294 determines the proper operation of the brake switch. Proper operation of the brake switch is important because the brake switch activates the Antilock Brake System (ABS) when the brake switch is on. The brake switch deactivates the ABS when the brake switch is off.

Conditions for Setting the DTC
- DTC C1294 can set if the vehicle's speed is greater than 40 km/h (25 mph).
- A malfunction exists if the brake was always on during two consecutive drive cycles.

Action Taken When the DTC Sets
- A malfunction DTC stores.
- ABS operation remains functional.

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. A drive cycle consists of starting the vehicle, driving the vehicle over 16 km/h (10 mph), stopping and then turning the ignition off.

Diagnostic Aids
Use the enhanced diagnostic function of the Scan Tool in order to measure the frequency of the malfunction.
An intermittent malfunction is most likely caused by a rubbed through wire insulation. Any circuitry that is suspected of causing the intermittent complaint should be thoroughly checked for improper mating, improperly formed or damaged terminals, or physical damage to the wiring harness.

IMPORTANT: Zero the J 39200 test leads before making any resistance measurements. Refer to the J 39200 user's manual.