Road Test Procedure

- Perform this test using a Scan tool.
- Perform this test only when traffic and road conditions permit.
- Observe all traffic safety regulations.

GARAGE SHIFTS
Perform garage shift test prior to continuing road test to make sure the PCM/TCM inputs are connected and functioning properly.
1. Move the transaxle control assembly to Park (P) and set parking brake.
2. Connect a Scan tool to DLC.
3. Start engine.
4. Verify the following signals are present on Scan tool:
- Engine Speed (RPM)
- Transaxle Input Speed (TISS)
- Transaxle Output Speed (TOSS)
- Vehicle Speed
- A/B/C/ Range
- PRNDL Select
- Desired PCS
- Actual PCS
- PCS Duty Cycle
- Brake Switch
- Engine Coolant Temperature (ECT)
- Transaxle Fluid Temperature
- Throttle Angle
- System Volts
5. Monitor BRAKE SWITCH signal while tapping on brake pedal with your foot. The brake switch signal should be:
Released - when brake pedal is released
Applied - when brake pedal is applied
6. Monitor the PRNDL SELECT signal and move gear selector through all ranges. Verify PRNDL SELECT value matches gear range selected on console. The gear selections should be immediate and not harsh.
7. Move control assembly to Neutral (N) and monitor throttle angle signal while increasing and decreasing engine RPM with accelerator pedal. The throttle angle should increase with engine RPM.
8. Check for and note any current or history Diagnostic Trouble Codes (DTCs).

UPSHIFT CONTROL AND TORQUE CONVERTER CLUTCH (TCC) APPLY
With gear selector in Overdrive (D), perform the following steps:
1. Refer to "Shift Speed" table contained in "Specifications" and choose a throttle position of either 10% or 25%.
2. Monitor throttle angle and vehicle speed with Scan tool.

IMPORTANT: Shift speeds may vary due to slight hydraulic delays in responding to electronic controls. A change from original equipment tire size also affects shift speeds.

3. Accelerate to chosen throttle angle. Hold throttle steady.
4. As transaxle upshifts, note shift speed and commanded gear changes for each of the following gears:
- 2nd gear
- 3rd gear
- 4th gear

IMPORTANT: The TCC should not apply unless transaxle has reached a minimum operating temperature of 8°C (46°F) Trans Temp and 50°C (122°F) Engine Coolant Temp.

5. The Torque Converter Clutch (TCC) should apply in Fourth gear. Note when TCC applies. An RPM drop will occur when TCC applies.
6. Repeat steps 1 - 5 using several different throttle angles.

PART THROTTLE DETENT DOWNSHIFT
At vehicle speeds of 64 - 88 km/h (40 - 55 mph) in Fourth gear, quickly increase throttle angle to greater than 50%. Verify the following results:
- The TCC releases.
- The transaxle downshifts to 3rd gear.
- The 1-2 shift solenoid valve turns OFF.
- The 2-3 shift solenoid valve remains ON.

FULL THROTTLE DETENT DOWNSHIFT
At vehicle speeds of 64 - 88 km/h (40 - 55 mph) in Fourth gear, quickly increase the throttle angle to its maximum position. Verify the following results:
- The TCC releases.
- The transaxle downshifts to 2nd gear immediately.
- The 1-2 and 2-3 shift solenoid valves turn OFF.

MANUAL DOWNSHIFTS
The shift solenoid valves do not control initial 4-3 manual downshift. The 4-3 manual downshift is hydraulic. The 3-2 and 2-1 manual downshifts are electronic. The solenoid states will change during, or shortly after, a 4-3 downshift is selected.
1. At vehicle speeds of 64 - 88 km/h (40 - 55 mph) in Fourth gear, release accelerator pedal while moving gear selector to Manual Third (3). Observe the following results:
- The TCC releases.
- The transaxle downshifts to 3rd gear immediately.
- The engine slows vehicle down.
2. Move gear selector back to Overdrive (D) and accelerate to 64 - 72 km/h (40 - 45 mph). Release accelerator while moving gear selector to Manual Second (2) and observe the following results:
- The TCC releases.
- The transaxle immediately downshifts to 2nd gear.
- The engine slows the vehicle down.
3. Move the gear selector back to Overdrive and accelerate to 64 km/h (40 mph). Release the accelerator pedal while moving the gear selector to Manual First (1) and observe the following results:
- The TCC releases.
- The transaxle immediately downshifts to 2nd gear.
- The engine slows vehicle down.
- Below 60 km/h (37 mph) transaxle downshifts to 1st gear.
A Manual First-Third Gear Ratio will occur at high speeds as an upshift safety feature. Do not attempt to perform this shift.

MANUAL GEAR RANGE SELECTION
The shift solenoid controls upshifts in manual gear ranges. Perform the following tests by accelerating at 10% TP sensor position.

MANUAL THIRD (3)
With the vehicle stopped, move gear selector to Manual Third (3) and accelerate in order to observe the following conditions:
- The 1-2 shift
- The 2-3 shift

MANUAL SECOND (2)
1. With vehicle stopped, move gear selector to Manual Second (2) and accelerate in order to observe the 1-2 shift.
2. Accelerate to 40 km/h (25 mph) and observe the following conditions:
- The 2-3 shift does not occur.
- The TCC does not apply.

MANUAL FIRST (1)
With vehicle stopped, move gear selector to Manual First (1). Accelerate to 32 km/h (20 mph) and observe the following conditions:
- No upshifts occur.
- The TCC does not apply.

REVERSE
With vehicle stopped, move gear selector to R and slowly accelerate in order to observe the following conditions:
- The 1-2 Shift Solenoid valve is ON.
- The 2-3 Shift Solenoid valve is OFF. Use a Scan tool to see if any engine/transaxle trouble codes are set. Refer to "Diagnostic Trouble Codes" and repair the vehicle as directed. After repairing the vehicle, verify code did not set again.
If transaxle is still not performing well but no trouble codes have set, there may be an intermittent condition. Check all electrical connections for damage or a loose fit. Some Scan tools have a snapshot test which can help catch an intermittent condition that does not occur long enough to set a code.
If no DTCs are set and the condition is suspected to be hydraulic, take vehicle on a road test.