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Home >> Ford >> 1996 >> Aerostar Van Window >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - Diagnosis - 4R44E & 4R55E Automatic Transmission >> EEC-V Self-Diagnostic System >> Transmission Solenoid Cycling & Drive Test (Dynamic Test) >> Engagements

Transmission Solenoid Cycling & Drive Test (Dynamic Test): Engagements

Ensure Bench/Drive switch is in DRIVE mode. Set tester to Gear Select switch to "1". Shift transaxle from park to reverse. Reverse should engage. Depress EPC switch. Line pressure should drop to idle pressure. While depressing EPC switch, shift vehicle from park to drive. Vehicle should shift into drive with smooth engagement. Release EPC switch. Line pressure should rise to maximum pressure. Repeat previous step. Vehicle shift engagement should be firm with EPC switch released.

NOTE: Upshifts and downshifts will be firm during this procedure. LEDs will turn Green when solenoids are activated and turn off when deactivated.