C1291

DTC C1293 DTC C1291 Set In Current Or Previous Ignition:

Brake Switch Schematic:

CIRCUIT DESCRIPTION
This DTC is the second portion of DTC C1291. If DTC C1291 occurred during the last ignition cycle, DTC C1293 becomes a current malfunction during the next ignition cycle, keeping "TCS" disabled until a brake switch "ON" state is seen. When a change is seen during an ignition cycle in which DTC C1293 is a current malfunction, DTC C1291 will clear itself at the end of the current ignition cycle, and "TCS" will enable itself at the start of the next ignition cycle DTC C1293 alone indicates DTC C1291 occurred previously, but is intermittent, or has been corrected.

CONDITION FOR SETTING THE DTC
- DTC C1293 is set when DTC C1291 was set in the previous ignition cycle.

ACTION TAKEN WHEN THE DTC SETS
- A malfunction DTC is stored, "TCS" is disabled and the "TRACTION OFF" indicator lamp is turned "ON." ABS remains functional.

CONDITIONS FOR CLEARING DTC
- Condition for DTC is no longer present and scan tool clear DTC function is used.
- 50 ignition cycles have passed with no DTC(s) detected.

DIAGNOSTIC AIDS
- It is very important that a thorough inspection of the wiring and connectors be performed. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction.
- An "intermittent" malfunction is most likely caused by a poor connection, rubbed through wire insulation, or a wire that is broken inside the insulation.
- Also, verify proper brake switch operation using the "Data List" of the scan tool. As the brake is applied, the data list should display the brake switch "ON" within 1 inch of travel.

TEST DESCRIPTION
The numbers below refer to step numbers on the diagnostic table.
2. Checks for DTC C1291.