C1292

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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 seconds.

Action Taken When The DTC Sets
^ A malfunction DTC stores.
^ The ABS/TCS disables.
^ The amber ABS/TCS warning indicators turns on.

Conditions for Clearing The DTC
^ The condition responsible for setting the DTC no longer exists and the Scan Tool Clear DTC function is used.
^ 100 drive cycles pass with no DTC detected.

Diagnostic Aids
Use the enhanced diagnostic function of the Scan Tool in order to measure the frequency of the malfunction. Refer to the Scan Tool manual for the procedure. Use the Data List of the Scan Tool verify proper brake switch operation. The Data List should display the brake switch as the brake is applied within 25 mm (1.0 inch) of brake pedal travel.
Thoroughly inspect any circuitry that may cause the intermittent complaint for the following conditions:
^ Rubbed-through wire insulation
^ A broken wire inside the insulation
^ Backed out terminals
^ Improper mating
^ Broken locks
^ Improperly formed or damaged terminals
^ Poor terminal-to-wiring connections
^ Physical damage to the wiring harness

Important: Zero the J39200 test leads before making any resistance measurements.