Park Avenue Ultra V6-3.8L SC VIN 1 (1991)
Brake Signal: Description and Operation
Brake Switch Circuit (TCC)
Brake Switch Circuit (Cruise Control Brake Input)
PURPOSE
The brake switch signals the ECM/PCM to turn "OFF" the torque converter clutch and/or the cruise control when the brakes are applied.
OPERATION
The brake switch actually contains two switches. Both portions of the switch are normally closed and open when the brakes are applied. This interrupts
power to the "cruise brake" input terminal of the ECM/PCM, and interrupts the power supply to the TCC solenoid inside the transaxle.
