Road Test

DESCRIPTION





- The purpose of the test is to determine overall performance of the transmission and analyze causes of problems.
- The road test consists of the following three parts:
1. Check before engine is started
2. Check at idle





3. Cruise test
- Before road test, familiarize yourself with all test procedures and items to check.
- Conduct tests on all items until specified symptom is found. Troubleshoot items, which check out No Good after road test.

1. CHECK BEFORE ENGINE IS STARTED
1. CHECK O/D OFF INDICATOR LAMP





1. Park vehicle on flat surface.
2. Move A/T selector lever to "P" position.
3. Turn ignition switch to "OFF" position. Wait at least 5 seconds.
4. Turn ignition switch to "ON" position. (Do not start engine.)
5. Does O/D OFF indicator lamp come on for about 2 seconds?





Yes or No
Yes >>GO TO 2.
No >> Stop ROAD TEST. Go to "1. O/D OFF Indicator Lamp Does Not Come On".
Symptom Related Diagnostic Procedures





2. CHECK O/D OFF INDICATOR LAMP
Does O/D OFF indicator lamp flicker for about 8 seconds?
Yes or No
Yes >> Perform self-diagnosis and check NG items on the "Diagnostic Worksheet".

No >>
1. Turn ignition switch to "OFF" position.
2. Perform self-diagnosis and note NG items. Reading and Clearing Diagnostic Trouble Codes

3. Go to "2. CHECK AT IDLE".

2. CHECK AT IDLE
1. CHECK ENGINE START





1. Park vehicle on flat surface.
2. Move A/T selector lever to "P" position.
3. Turn ignition switch to "OFF" position.
4. Turn ignition switch to "START" position.
5. Is engine started?
Yes or No
Yes >>GO TO 2.
No >> Mark the box on the DIAGNOSTIC WORKSHEET. Go to "2. Engine Cannot Be Started In "P" and "N" Position". Continue ROAD TEST.
Symptom Related Diagnostic Procedures

2. CHECK ENGINE START





1. Turn ignition switch to "ACC" position.
2. Move A/T selector lever to "D", "1", "2" or "R" position.
3. Turn ignition switch to "START" position.
4. Is engine started?
Yes or No
Yes >> Mark the box on the DIAGNOSTIC WORKSHEET. Go to "2. Engine Cannot Be Started In "P" and "N" Position". Continue ROAD TEST.
No >> GO TO 3.
Symptom Related Diagnostic Procedures

3. CHECK VEHICLE MOVE





1. Move A/T selector lever to "P" position.
2. Turn ignition switch to "OFF" position.
3. Release parking brake.
>>GO TO 4.

4. CHECK VEHICLE MOVE





1. Push vehicle forward or backward.
2. Does vehicle move when it is pushed forward or backward?
3. Apply parking brake.
Yes or No
Yes >> Mark the box on the DIAGNOSTIC WORKSHEET. Go to "3. In "P" Position. Vehicle Moves Forward Or Backward When Pushed". Continue ROAD TEST.
Symptom Related Diagnostic Procedures
No >> GO TO 5.

5. CHECK VEHICLE MOVE





1. Start engine.
2. Move A/T selector lever to "N" position.
3. Release parking brake.
4. Does vehicle move forward or backward?
Yes or No
Yes >> Mark the box on the DIAGNOSTIC WORKSHEET. Go to "4. In "N" Position. Vehicle Moves". Continue ROAD TEST.
No >> GO TO 6.

6. CHECK SHIFT SHOCK





1. Apply foot brake.





2. Move A/T selector lever to "R" position.
3. Is there large shock when changing from "N" to "R" position?
Yes or No
Yes >> Mark the box on the DIAGNOSTIC WORKSHEET. Go to "5. Large Shock. "N" ^"R" Position". Continue ROAD TEST.
Symptom Related Diagnostic Procedures
No >> GO TO 7.

7. CHECK VEHICLE MOVE





1. Release foot brake for several seconds.
2. Does vehicle creep backward when foot brake is released?
Yes or No
Yes >> GO TO 8.
No >> Mark the box on the DIAGNOSTIC WORKSHEET. Go to "Vehicle Does Not Creep Backward In "R" Position". Continue ROAD TEST.
Symptom Related Diagnostic Procedures

8. CHECK VEHICLE MOVE





1. Move A/T selector lever to "D", "2" and "1" positions and check if vehicle creeps forward.
2. Does vehicle creep forward in all three positions?
Yes or No
Yes >> Go to "3. CRUISE TEST".
No >> Mark the box on the DIAGNOSTIC WORKSHEET. Go to "7. Vehicle Does Not Creep Forward In "D", "2" Or "1" Position".
Symptom Related Diagnostic Procedures
Continue ROAD TEST.

3. CRUISE TEST





- Check all items listed in Parts 1 through 3 of Diagnostic Worksheet.

With CONSULT-II
- Using CONSULT-II, conduct a cruise test and record the result.
- Print the result and ensure that shifts and lock-ups take place as per Shift Schedule.

CONSULT-II Setting Procedure





1. Turn ignition switch "OFF".
2. Connect CONSULT-II to Data link connector, which is located in left side lower dash panel.





3. Turn ignition switch "ON".
4. Touch "START".





5. Touch "A/T".





6. Touch "DATA MONITOR".





7. Touch "MAIN SIGNALS" or "TCM INPUT SIGNALS".
8. See "Numerical Display", "Barchart Display" or "Line Graph Display".





9. Touch "SETTING" to recording condition ("AUTO TRIG" or "MANU TRIG") and touch "BACK".
10. Touch "START".





11. When performing cruise test, touch "RECORD".





12. After finishing cruise test part 1, touch "STOP".








13. Touch "STORE" and touch "BACK".





14. Touch "DISPLAY".
15. Touch "PRINT".
16. Check the monitor data printed out.
17. Continue cruise test part 2 and 3.

Without CONSULT-II





- Throttle position sensor can be checked by voltage across terminals 41 and 42 of TCM.

Cruise Test-Part 1
1. CHECK STARTING GEAR (D1) POSITION





1. Drive vehicle for approximately 10 minutes to warm engine oil and ATF up to operating temperature.
ATF operating temperature: 50 - 80°C (122 - 176°F)
2. Park vehicle on flat surface.
3. Set overdrive control switch to "ON" position.
4. Move A/T selector lever to "P" position.
5. Start engine.





6. Move A/T selector lever to "D" position.





7. Accelerate vehicle by constantly depressing accelerator pedal halfway.
8. Does vehicle start from D1?
Read gear position.
Yes or No
Yes >>GO TO 2.
No >> Go to "8. Vehicle Cannot Be Started From D1". Continue ROAD TEST. Symptom Related Diagnostic Procedures

2. CHECK SHIFT UP (D1 TO D2)





Does A/T shift from D1 to D2 at the specified speed?
Read gear position, throttle opening and vehicle speed.
Yes or No
Yes >> GO TO 3.
No >> Go to "9. A/T Does Not Shift: D1 -> D2 Or Does Not Kickdown: D4 -> D2".
Symptom Related Diagnostic Procedures
Continue ROAD TEST.

3. CHECK SHIFT UP (D2 TO D3)





Does A/T shift from D2 to D3 at the specified speed?
Read gear position, throttle position and vehicle speed.

Yes or No
Yes >>GO TO 4.
No >> Go to "10. A/T Does Not Shift: D2 -> D3".
Symptom Related Diagnostic Procedures
Continue ROAD TEST.

4. CHECK SHIFT UP (D3 TO D4)





Does A/T shift from D3 to D4 at the specified speed?
Read gear position, throttle position and vehicle speed.
Yes or No
Yes >> GO TO 5.
No >> Go to "11. A/T Does Not Shift: D3 -> D4".
Symptom Related Diagnostic Procedures
Continue ROAD TEST.

5. CHECK LOCK-UP (D4 TO D4 L/U)





Does A/T perform lock-up at the specified speed?
Read vehicle speed, throttle position when lock-up duty becomes 94%. Shift Schedules and Pressures
Yes or No
Yes >> GO TO 6.
No >> Go to "12. A/T Does Not Perform Lock-up".
Symptom Related Diagnostic Procedures
Continue ROAD TEST.

6. CHECK HOLD LOCK-UP
Does A/T hold lock-up condition for more than 30 seconds? Yes or No
Yes >> GO TO 7.
No >> Go to "13. A/T Does Not Hold Lock-up Condition"
Symptom Related Diagnostic Procedures

7. CHECK SHIFT DOWN (D4 L/U TO D4)





1. Release accelerator pedal.
2. Is lock-up released when accelerator pedal is released? Yes or No
Yes >> GO TO 8.
No >> Go to "14. Lock-up Is Not Released".
Symptom Related Diagnostic Procedures
Continue ROAD TEST.

8. CHECK SHIFT DOWN (D4 TO D3)





1. Decelerate vehicle by applying foot brake lightly.
2. Does engine speed return to idle smoothly when A/T is shifted from D4 to D3?
Read gear position and engine speed.
Yes or No
Yes >>
1. Stop vehicle.
2. Go to "Cruise Test-Part 2".
No >> Go to "15. Engine Speed Does Not Return To Idle (Light Braking D4 -> D3)".
Symptom Related Diagnostic Procedures
Continue ROAD TEST.

Cruise Test-Part 2
1. CHECK STARTING GEAR (D1) POSITION





1. Confirm overdrive control switch is in "ON" position.
2. Confirm A/T selector lever is in "D" position.
3. Accelerate vehicle by half throttle again.
4. Does vehicle start from D1?
Read gear position.
Yes or No
Yes >>GO TO 2.
No >> Go to "16. Vehicle Does Not Start From D1".
Symptom Related Diagnostic Procedures
Continue ROAD TEST.

2. CHECK SHIFT UP AND SHIFT DOWN (D3 TO D4 TO D2)





1. Accelerate vehicle to 80 km/h (50 MPH) as shown in illustration.
2. Release accelerator pedal and then quickly depress it fully.
3. Does A/T shift from D4 to D2 as soon as accelerator pedal is depressed fully?
Read gear position and throttle position.
Yes or No
Yes >> GO TO 3.
No >> Go to "9. A/T Does Not Shift: D1 -> D2 Or Does Not Kickdown: D4 -> D2".
Symptom Related Diagnostic Procedures
Continue ROAD TEST.

3. CHECK SHIFT UP (D2 TO D3)





Does A/T shift from D2 to D3 at the specified speed?
Read gear position, throttle position and vehicle speed. Shift Schedules and Pressures
Yes or No
Yes >>GO TO 4.
No >> Go to "10. A/T Does Not Shift: D2 -> D3".
Symptom Related Diagnostic Procedures
Continue ROAD TEST.

4. CHECK SHIFT UP (D3 TO D4) AND ENGINE BRAKE





Release accelerator pedal after shifting from D2 to D3.
Does A/T shift from D3 to D4 and does vehicle decelerate by engine brake?
Read gear position, throttle position and vehicle speed.
Yes or No
Yes >>
1.8Stop vehicle.
2.8Go to "Cruise Test-Part 3".
No >> Go to "11. A/T Does Not Shift: D3 -> D4".
Symptom Related Diagnostic Procedures
Continue ROAD TEST.

Cruise Test-Part 3
1. VEHICLE SPEED D4 POSITION





1. Confirm overdrive control switch is in "ON" position.
2. Confirm selector lever is in "D" position.
3. Accelerate vehicle using half-throttle to D4.
>>GO TO 2.

2. CHECK SHIFT DOWN (D4 TO D3)





1. Release accelerator pedal.
2. Set overdrive control switch to "OFF" position while driving in D4
3. Does A/T shift from D4 to D3 (O/D OFF)?





Read gear position and vehicle speed.
Yes or No
Yes >> GO TO 3.
No >> Go to "17. A/T Does Not Shift: D4 -> D3, When Overdrive Control Switch "ON" -> "OFF"".
Symptom Related Diagnostic Procedures
Continue ROAD TEST.

3. CHECK ENGINE BRAKE





Does vehicle decelerate by engine brake?
Yes or No
Yes >>GO TO 4.
No >> Go to "15. Engine Speed Does Not Return To Idle (Light Braking, D4 -> D3)".
Symptom Related Diagnostic Procedures
Continue ROAD TEST.

4. CHECK SHIFT DOWN (D3 TO D2)





1. Move A/T selector lever from "D" to "2" position while driving in D3 (O/D OFF).
2. Does A/T shift from D3 (O/D OFF) to D2?
Read gear position.
Yes or No
Yes >> GO TO 5.
No >> Go to "18. A/T Does Not Shift: D3 -> 22, When Selector Lever "D" -> "2" Position".
Symptom Related Diagnostic Procedures
Continue ROAD TEST.

5. CHECK ENGINE BRAKE





Does vehicle decelerate by engine brake?
Yes or No
Yes >> GO TO 6.
No >> Go to "15. Engine Speed Does Not Return To Idle (Light Braking, D4 -> D3)".
Symptom Related Diagnostic Procedures
Continue ROAD TEST.

6. CHECK SHIFT DOWN





1. Move A/T selector lever from "2" to "1" position while driving in 22
2. Does A/T shift from 22 to 1 position?
Read gear position.
Yes or No
Yes >> GO TO 7.
No >> Go to "19. A/T Does Not Shift: 2(2) -> 1(1), When Selector Lever "2" -> "1" Position".
Symptom Related Diagnostic Procedures
Continue ROAD TEST.

7. CHECK ENGINE BRAKE





Does vehicle decelerate by engine brake?
Yes or No
Yes >>
1. Stop vehicle.
2. Perform self-diagnosis. "TCM Self diagnostic Procedure (No Tools)". Reading and Clearing Diagnostic Trouble Codes

No >> Go to Vehicle Does Not Decelerate By Engine Brake".
Symptom Related Diagnostic Procedures
Continue ROAD TEST.