Road Testing Vehicle

Shift Point Road Test

NOTE: Always drive the vehicle in a safe manner according to driving conditions and obey all traffic laws.

Most performance based automatic transmission DTCs require the fault to be detected multiple times before setting a DTC. In many instances the faults musts be detected consecutively a predetermined number of times (up to five). Performing the shift point road test as detailed below increases the likelihood that a DTC sets if a fault is present in the system.

1.

Bring engine and transmission up to normal operating temperature.

2.

Operate the vehicle with the selector lever in the D position.

3.

Apply minimum throttle and observe speeds when an upshift occurs. Refer to the Shift Speeds chart.

4.

With the selector lever in the D position and speed above 80 km/h (50 mph) and less than half throttle, move the selector lever from the D position to manual 2 position and release the accelerator pedal. The transmission should downshift into 2nd gear. With the transmission 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