Lock-Up Solenoid Relay (A/T)

Battery voltage is supplied to lock-up relay Light Green/Red wire from control relay terminal "E". Battery voltage is supplied to lock-up relay White/Red wire through the stoplight switch. Voltage through stoplight switch should drop to zero volts when the brake pedal is depressed. When control unit senses conditions are correct for energizing lock-up solenoid in automatic transmission, control unit will energize lock-up relay by providing a ground on terminal "A11". Relay, in turn, energizes lock-up solenoid. When energized, the lock-up solenoid will provide a feedback signal to the control unit, indicating lock-up signal has been received.