C1294

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Part 2 Of 2:

CIRCUIT DESCRIPTION
DTC Cl294 determines the proper operation of the brake switch. Proper operation of the brake switch is important because the brake switch activates the ABS and inhibits the ETS when the brake switch is on. The brake switch deactivates the ABS when the brake switch is off. The following conditions always occur when the brake switch is on:
^ ABS operation is requested.
^ ETS operation is inhibited.

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.
^ ETS operation is inhibited.

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 DTC(s) 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.

TEST DESCRIPTION
3. This test isolates the cause of the malfunction to either a faulty or misadjusted brake switch, or a short to voltage in the brake switch circuit.
5. This test checks for a resistive short to voltage in the brake switch circuit.
7. This test determines if the malfunction is caused by the EBCM.