C1295

CIRCUIT DESCRIPTION
DTC C1295 identifies open brake switch circuitry that prevents the brake switch input to the EBCM/EBTCM from changing states while applying the brake. DTC C1295is used in conjunction with DTC C1291 and DTC C1292 to determine the cause of an open brake switch malfunction.

CONDITIONS FOR SETTING THE DTC
DTC C1295 can set after initialization is complete. A malfunction exists if the brake switch input voltage is out of specification for one second. An open circuit exists when the brake switch input voltage is out of specification.

ACTION TAKEN WHEN THE DTC SETS
^ A malfunction Diagnostic Trouble Code (DTC) stores.
^ ABS/ETS/TCS disables.
^ The amber ABS/ETS/TCS warning indicator(s) turns on.

CONDITIONS FOR CLEARING THE DTC
^ The condition responsible for setting the DTC no longer exists and the Scan Tool Clear DTCs function is used.
^ 100 drive cycles pass with no DTC(s) detected.

DIAGNOSTIC AIDS
The following conditions may cause an intermittent malfunction:
^ A poor connection
^ Rubbed-through wire insulation
^ A broken wire inside the insulation

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.

Thoroughly inspect any circuitry that may cause the intermittent complaint for the following conditions:
^ 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 J 39200 test leads before making any resistance measurements. Refer to the J39200 user's manual.