Special Testing Procedures — Front Pump Output Test — Automatic Transmission - 6-Speed Automatic Transmission - 6R80 · Reference 8851

remaining in the manual 2 position, move the selector lever into the manual 1 position and release the accelerator pedal. The transmission should downshift into 1st gear at speeds below approximately 45-56 km/h (28-35 mph).

5. If the transmission fails to upshift/downshift, REFER to: Diagnosis By Symptom .

Shift Speed

Throttle Position	Shift	Km/h	MPH
Light Throttle	1-2	13-21	8-13
Throttle Position (TP) Sensor	2-3	26-34	16-21
Voltage @ 1.25 Volts	3-4	35-43	22-27
4-5		56-64	35-40
5-6		71-79	44-49
Closed Throttle	6-5	56-64	35-40
5-4		40-48	25-30
4-3		13-21	8-13
3-2		3-11	2-7
2-1		2-6	1-4
Wide Open Throttle (WOT)	1-2	45-53	28-33
2-3		87-95	54-59
3-4		140-148	87-92

DIAGNOSIS AND TESTING > SPECIAL TESTING PROCEDURES > FRONT PUMP

OUTPUT TEST

The special tests are designed to aid the technician in diagnosing the hydraulic and mechanical portions of the transmission. The front pump output test can also be used to detect a stuck or inoperative main control torque converter regulator valve. The datalogger is used to measure the amount of time it takes the vehicle to reach approximately 5 Km/h (3 MPH) at engine idle speed without pressing the accelerator pedal, verifying transmission pump operation.

1. Verify transmission fluid temperature is at 77 °C (170 °F) or above.

2. Park the vehicle for a minimum of 6 hours or overnight on a level spot where it can be driven

Ford_Mustang_all_2015-2017.pdf · source reference 8851

Original technical text and illustrations, formatted as HTML. Follow the engine, transmission, equipment, model and year specified in the source. Import and layout checks do not establish applicability to every 2015–2017 Mustang. About this collection.