P0719

Steps 1-4:

Steps 5-9:

DTC P0719
Circuit Description
The Torque Converter Clutch (TCC) brake switch is used to indicate the status of the brake pedal, applied or released, to the transmission control module (TCM). The normally-closed TCC brake switch supplies an ignition voltage input to the TCM. Applying the brake pedal opens the switch, interrupting voltage to the TCM. Releasing the brake pedal resumes voltage to the TCM. When the TCM senses 0 volts at the TCC brake switch input, the TCM de-energizes the TCC solenoid valve.
If the TCM detects an open TCC brake switch, stuck ON, during accelerations, then DTC P0719 sets. DTC P0719 is a type C DTC.

Conditions for Running the DTC
^ No OSS DTC'S P0722 or P0723.
^ Brake switch DTC P0724 is not pending.
^ The system voltage is 8 - 18 volts.

Conditions for Setting the DTC
The TCC brake switch input is at 0 volts for 15 minutes and the following conditions occur eight times without a status change on the TCC brake input:
^ The vehicle speed is less than 8 km/h (5 mph), then,
^ The vehicle speed is between 8 km/h (20 mph) and 32 km/h (20 mph) for at least 3 seconds, but no more than 7 seconds, then,
^ The vehicle speed remains above 32 km/h (20 mph) for at least 6 seconds.

Action Taken When the DTC Sets
^ The TCM does not request the ECM to illuminate the Malfunction Indicator Lamp (MIL).
^ The ECM records the operating conditions when the Conditions for Setting the DTC are met. The TCM stores this information as a Failure Record.
^ The TCM stores DTC P0719 in TCM history.

Conditions for Clearing the DIC/DTC
^ The TCM clears the DIC message when the condition no longer exists.
^ The TCC brake switch input indicates ignition voltage for 2 seconds.
^ A scan tool can clear the DTC.
^ The TCM clears the DTC from TCM history if the vehicle completes 40 warm-up cycles without a non emission related diagnostic fault occurring.
^ The TCM cancels the DTC default actions when the fault no longer exists and the DTC passes.

Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. Disconnecting the brake switch connector, jumping the circuit, and observing a status change, isolates the brake switch as the source of the DTC.
3. If the TCC/ET voltage circuit shorts to ground, the TCC/ET fuse opens.
7. Replace the TCM only after you have completed the preceding diagnostic steps.