PROBLEM SYMPTOM CONFIRMATION
Try to reproduce symptoms based on the result of the customer problem analysis. If the problem is that the transaxle does not change gear ratios or changes ratios at the wrong engine speed, conduct the following road test while referring to the speed variation chart and attempt to duplicate the problem symptoms.
ROAD TEST
CAUTION:
Strictly observe posted speed limits, traffic laws and road conditions when performing the road test.
Note
This test must be conducted after checking and confirming that the engine is operating normally.
Perform this test while the CVT fluid temperature is between 50 and 100°C (122 and 212°F).
Perform the test with the A/C off.
Tech Tips
Lock-up control will not operate when the CVT fluid temperature is 40°C (104°F) or less and the vehicle speed is 60 km/h (37 mph) or less, or when the CVT fluid temperature is 5°C (41°F) or less.
Lock-up control will not operate when the engine coolant temperature is 30°C (86°F) or less.
The lock-up off vehicle speed may vary depending on the electrical load, and air conditioning and brake operations.
Keep a constant accelerator pedal angle to maintain the specified vehicle speed.
When fully depressing the accelerator pedal, read the engine speed immediately after the pedal is fully depressed.
| Shift Lever Position | Accelerator Pedal Position (Vehicle Speed) |
||||||
|---|---|---|---|---|---|---|---|
| Fully depressed (40 km/h (25 mph))*1 |
Fully depressed (70 km/h (43 mph))*2 |
Fully depressed (100 km/h (62 mph))*3 |
Released (40 km/h (25 mph))*5 |
Constant Position (70 km/h (43 mph))*6 |
Constant Position (100 km/h (62 mph))*4 |
Kick-down (Accelerating from 70 km/h (43 mph))*7 |
|
| D (Sport switch off) |
4000 to 5400 rpm | 5200 to 6000 rpm | 5600 to 6400 rpm | 800 to 1400 rpm | 1200 to 1700 rpm | 1700 to 2300 rpm | 3000 rpm or more |
| D (Sport switch on) |
4000 to 5400 rpm | 5200 to 6000 rpm | 5600 to 6400 rpm | 1000 to 2200 rpm | 1400 to 2900 rpm | 1900 to 3700 rpm | 3000 rpm or more |
| Shift Lever Position | Lock-up Condition (Accelerator Pedal Opening Amount) | |
|---|---|---|
| Lock-up On (5%) | Lock-up Off (0%) | |
| D | 5 to 30 km/h (3 to 19 mph) |
5 to 30 km/h (3 to 19 mph) |
D position test
Move the shift lever to D. Check the following:
Check if the gear ratio changes during normal driving (average urban driving).
With the vehicle stopped, fully depress the accelerator pedal activating the kick-down operation and check the engine speed when the vehicle reaches the vehicle speeds listed in *1, *2 and *3 in the speed variation chart.
With the vehicle stopped, depress the accelerator pedal to a constant intermediate position and check the engine speed when the vehicle reaches the vehicle speed listed in *4 in the speed variation chart.
Release the accelerator pedal and check the engine speed when the vehicle decelerates to the vehicle speed listed in *5 in the speed variation chart.
Depress the accelerator pedal to a constant intermediate position again and check the engine speed when the vehicle reaches the vehicle speed listed in *6 in the speed variation chart.
Fully depress the accelerator pedal activating the kick-down operation and check the engine speed as the vehicle accelerates from the vehicle speed listed in *7 in the speed variation chart.
Check for abnormal noises and vibration.
Tech Tips
The check for the cause of abnormal noise and vibration must be done thoroughly as it could also be due to loss of balance in the differential, torque converter clutch, etc.
Check for abnormal shock and slippage at kick-down.
Check the lock-up mechanism.
R position test
Move the shift lever to R and lightly depress the accelerator pedal. Check that the vehicle moves backward without any abnormal noise or vibration.
CAUTION:
Before conducting this test, make sure that the test area is free from people and obstructions.
P position test
Stop the vehicle on an incline (more than 5°). Then move the shift lever to P and release the parking brake. Check that the parking lock pawl holds the vehicle in place.