C1293

CIRCUIT DESCRIPTION
This Diagnostic Trouble Code (DTC) is the second portion of DTC C1291 and C1292. If DTCs C1291 or C1292 occurred during the last drive cycle, DTC C1293 becomes a current malfunction during the next ignition cycle, keeping ABS disabled until a Stoplamp Switch ON state is seen.

CONDITIONS FOR SETTING THE DTC
Diagnostic Trouble Code (DTC) C1293 alone indicates DTC C0091 or C0092 occurred previously, but is intermittent, or has been corrected.

ACTION TAKEN WHEN THE DTC SETS
^ A malfunction Diagnostic Trouble Code (DTC) stores.
^ ABS is disabled until the Electronic Brake Control Module (EBCM) receives a valid input from the brake switch.

CONDITIONS FOR CLEARING THE DTC
^ The condition responsible for setting the Diagnostic Trouble Code (DTC) no longer exists and the Scan Tool Clear DTCs function is used.
^ When a change is seen during an ignition cycle in which DTC C1293 is a current malfunction, DTC C1291 or C1292 will clear itself at the end of the current ignition cycle and ABS will enable itself at the start of the next ignition cycle.

DIAGNOSTIC AIDS
Use the Data Display function of the Scan Tool to verify proper brake switch operation. The Data Display function should display the brake switch as the brake is applied within 25 mm (1.0 inch) of brake pedal travel.





DTC C1293 DTC C1291/C1292 SET IN CURRENT OR PREVIOUS IGNITION CYCLE