ABS - With Traction Control

CIRCUIT DESCRIPTION
This DTC determines the proper operation of the brake switch. This is important because ABS is activated and ETS is inhibited when the brake switch is on and ABS is deactivated when the brake switch is off. If the brake switch is always on, ABS operation will always be requested and ETS will always be inhibited.

CONDITIONS FOR SETTING THE DTC
DTC C1294 can be set when the vehicle reaches at least 40 km/h (25 mph). If the brake was always on during two consecutive drive cycles, a malfunction exists.

ACTION TAKEN WHEN THE DTC SETS
A malfunction DTC is stored. ABS operation remains. ETS operation is inhibited.

CONDITIONS FOR CLEARING DTC
Condition for DTC is no longer present and the scan tool (CLEAR DTCs) function is used, or 100 drive cycles have passed with no DTC(s) detected.

DIAGNOSTIC AIDS
An intermittent malfunction may be caused by a poor connection, rubbed-through wire insulation, or a wire that is broken inside the insulation. An intermittent malfunction may be caused by a sticking stoplamp switch. The stoplamp switch should be checked for this condition and adjusted or replaced as necessary. 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.

NOTE: J 39200 test leads must be zeroed prior to making any resistance measurements. Refer to J 39200 user's manual.