Shift Point Road Test: Notes

Special Tools

Illustration	Tool Name	Tool Number
	Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool

This test verifies that the shift control system is operating correctly.

Bring engine and transmission up to normal operating temperature.
Operate vehicle with transmission range selector lever in D position.
Apply minimum throttle and observe speeds at which upshift occurs and the torque converter engages. Refer to the Shift Speeds chart.
With the transmission in D, move the range selector lever into the manual 3 position. The transmission should downshift to 4th gear. Release the accelerator pedal; engine braking should occur.
Press the accelerator pedal to floor, wide open throttle (WOT). Transmission should shift from 4th to 3rd, depending on vehicle speed. The torque converter clutch (TCC) should disengage and then reapply.
With the transmission in D position and speed above 80 km/h (50 mph) and less than half throttle, move the transmission range selector lever from D position to manual 2 position and remove pressure from the accelerator pedal. The transmission should downshift into 2nd gear. With the vehicle remaining in manual 2 position, move the transmission range selector lever into 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).

If the transmission fails to upshift/downshift or the TCC does not apply and release, refer to Diagnosis By Symptom .

NOTE: Shift speed ranges are approximate for all applications. For specific applications (engine, axle ratio, tire size and application), refer to the Automatic Transmission Specification booklet. Always drive the vehicle in a safe manner according to driving conditions and obey all traffic laws.

SHIFT SPEEDS

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