DTC 92

CIRCUIT DIAGRAM





INSPECTION PROCEDURE

CIRCUIT DESCRIPTION:
DTC91
This DTC is used to detect an open stop light switch in the non-ABS mode. The Electronic Brake Control Module (EBCM) looks for deceleration rates that would indicate braking action and verifies this assumption by requiring several repeats of this detection method. In each case, Antilock Brake System (ABS) will not be available since no stop light switch input is seen.

DTC92
This DTC is run to determine the proper operation of the stop light switch. This is important because ABS is activated when the stop light switch is closed. If the stop light switch is open, 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 91 can be set if three deceleration cycles occur without a stop light switch input to the EBCM.
DTC 92 can be set if the vehicle's speed is greater than 8km/h (5 mph). If the stoop light switch was not close and a release was required on two channels for 0.5 seconds, a malfunction exists.