A092

Circuit Description
This DTC is run to determine the proper operation of the brake switch. This is important because ABS is activated when the brake switch is "ON." If the brake switch is "OFF," ABS will never be activated. Since this malfunction is difficult to detect under normal braking conditions, this malfunction is only detected when ABS is required.

Failure Condition
DTC A092 can be set if the vehicle's speed is greater than 8 km/h (5 mph). If the brake was not "ON" and a release was required on two channels for 0.7 seconds, a malfunction exists.

Action Taken
A malfunction DTC is stored, ABS is disabled and the ABS indicator lamp is turned "ON."

Test Description
Number(s) below refer to circled number(s) on the diagnostic chart.
1. This step indicates if the brake switch signal is being received by the EBCM.
2. This step indicates if an open circuit exists in the brake switch or brake lamp circuitry.
3. This step isolates the open circuit to either the brake switch input circuitry, or the EBCM.

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.

The frequency of the malfunction can be checked by using the enhanced diagnostic function of the Tech 1.

Any circuitry, that is suspected as 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.