Road Test [10/2018 - ]
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- PROBLEM SYMPTOM CONFIRMATION
- Based on the result of the customer problem analysis, try to reproduce the symptoms. If the problem is that the transmission does not shift up or down, or that the shift point is too high or too low, conduct the following road test referring to the automatic shift schedule and attempt to duplicate the problem symptoms.
- ROAD TEST WARNING:NOTE:
- Be sure to inspect and adjust the engine before performing these tests.
- Perform the road test with the engine coolant temperature between 60 and 100°C (140 and 212°F) and the ATF temperature between 40 and 110°C (104 and 230°F).
- Perform these tests with the air conditioning and cruise control off.
Inspection Procedure Transmission Control Switch Test With the vehicle stationary and the shift lever in D, move the shift lever to M and return it to D. Check that the meter display changes from D to the appropriate M range and then back again. M Position Test Drive the vehicle with the shift lever in M, and move the shift lever to "+" and "-". Check that the meter display changes between M ranges properly. D Position Shift Test While driving the vehicle normally, check that the transmission shifts up and down through each gear properly. Lock-up Function While driving on a level surface at a constant speed in the lock-up range with the shift lever in D, lightly depress the accelerator pedal and check that the engine speed does not change abruptly. P Position Test Stop the vehicle on an incline (approximately 5° or more). Then move the shift lever to P and release the parking brake. Check that the parking lock pawl holds the vehicle in place. Abnormal Noise and Vibration Check for abnormal noise and vibration while driving the vehicle forward and backward, and during shift operations. Fluid Leakage After performing all other road test inspections, check for fluid leakage. HINT:
When checking for DTCs after a repair, drive the vehicle according to the monitor drive pattern.
Refer to MONITOR DRIVE PATTERN [11/2017 - ]
- Gear change confirmation
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Enter the following menus: Powertrain / Transmission / Data List.
Powertrain > Transmission > Data List
Tester Display Vehicle Speed Coolant Temperature NT Sensor Speed A/T Oil Temperature No. 1 Shift Status - Check that the transmission shifts to each gear while gently accelerating to 85 km/h (53 mph) or higher.
HINT:
- Check that the value of NT Sensor Speed drops by 50 rpm or more when the value of Shift Status increases.
- Depending on the engine speed when the gear is changed, it may be difficult to see the change of NT Sensor Speed.
- Lock-up confirmation
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Enter the following menus: Powertrain / Transmission / Data List.
Powertrain > Transmission > Data List
Tester Display Vehicle Speed Engine Speed Coolant Temperature Throttle Position Sensor No. 1 Voltage % NT Sensor Speed A/T Oil Temperature No. 1 Lock Up Status Shift Status - When the following conditions are met, check that the difference between "Engine Speed" and "NT Sensor Speed" is 50 rpm or less.
Lock-up Schedule
Throttle Position Sensor No. 1 Voltage % 6% Vehicle Speed 80 km/h (50 mph) or more Shift Status 6th gear Lock Up Status ON HINT:
Lock-up prohibition conditions:
- A/T oil temperature is less than 20°C (68°F)
- Engine coolant temperature is less than 50°C (122°F)
- Vehicle is being driven in 1st to 4th gear with the shift lever in D
- Throttle valve is fully closed
- Stop light switch signal is on