EPC Solenoid

CAUTION: Do not attempt to hold the electronic pressure control switch depressed (minimum line pressure) and stall the transmission (holding the vehicle with the brake while depressing the throttle with the transmission in gear). Transmission damage will result.

1. Observe line pressure. Record value. Line pressure should go to maximum. If not, refer to the Diagnosis by Symptom Index for diagnostic information or Pinpoint Test E concerning electronic pressure control solenoid.
2. Depress electronic pressure control switch. Record value. Line pressure should drop to a minimum value Record value. If not, refer to the Diagnosis by Symptom Index or Pinpoint Test E for the electronic pressure control solenoid.