AC60E AUTOMATIC TRANSMISSION / TRANSAXLE AUTOMATIC TRANSMISSION SYSTEM(for 7GR-FKS) ROAD TEST
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
- CAUTION:
- ·
Strictly obey all traffic rules and regulations.
·Do not drive the vehicle with the GTS cable contacting the pedals, shift lever or steering wheel.
·Driving the wheel with the GTS cable contacting these areas could impede vehicle control, resulting in a serious accident.
- ·
Do not operate the GTS while driving the vehicle.
·Operating the GTS while driving the vehicle will prevent you from paying sufficient attention to vehicle surroundings, and could result in a serious accident.
- NOTICE:
- ·
Be sure to inspect and adjust the engine before performing these tests.
·Perform the road test with the engine coolant temperature is 70°C (158°F) or higher 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 S and return it to D. Check that the meter display changes from D to the appropriate S range and then back again. |
| S Position Test | With the vehicle stationary and the shift lever in S, move the shift lever to "+" and "-". Check that the meter display changes between S 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.
Gear change confirmation
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
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 - 50003 373 212,205,174,180,179
Check that the transmission shifts to each gear while gently accelerating to 80 km/h (50 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 GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Transmission / Data List.
- Powertrain > Transmission > Data List
-
Tester Display Vehicle Speed Engine Speed Coolant Temperature Accel Position from EFI NT Sensor Speed A/T Oil Temperature No.1 Lock Up Status Shift Status - 50003 373 212,211,205,401,174,180,178,179
When the following conditions are met, check that the difference between "Engine Speed" and "NT Sensor Speed" is 50 rpm or less.
| Accel Position from EFI | 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 below 40°C (104°F)
·Engine coolant temperature is below 70°C (158°F)
·Shift range between "1" (S1 range) and "3" (S3 range)
·Accelerator pedal is fully released
·Stop light switch signal is on