Road Test

TROUBLE DIAGNOSIS


Road Test


DESCRIPTION
- The road test checks overall performance of the A/T and analyzes possible malfunction causes.
- The road test is carried out in the following three stages.
1. Check before engine is started.
2. Check at idle.
3. Cruise test
- Inspect all the items Part 1 to Part 3.
- Before beginning the road test, check the procedure and inspection items.
- Test all inspection items until the symptom is uncovered. Include NG items in "Diagnostic Worksheet Chart"
(Refer to How to Perform Trouble Diagnosis For Quick and Accurate Repair). Perform a diagnosis of the NG items after the completion of all the road test.

CHECK BEFORE ENGINE IS STARTED
1.CHECK A/T CHECK INDICATOR LAMP
1. Park vehicle on level surface.
2. Move selector lever to "P" position.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
Does A/T CHECK indicator lamp light up for about 2 seconds?
YES - 1 With CONSULT-III
1. Select "SELF-DIAG RESULTS" in "TRANSMISSION" with CONSULT-III and record all NG items on the "Diagnostic Worksheet Chart".
2. Go to "CHECK AT IDLE".
YES - 2 Without CONSULT-III
1. Perform self-diagnostics and record all NG items on the "Diagnostic Worksheet Chart". Refer to Reading and Clearing Diagnostic Trouble Codes.
2. Go to "CHECK AT IDLE".
NO - Stop the road test and go to A/T Check Indicator Lamp Does Not Come On.

CHECK AT IDLE
1.CHECK STARTING THE ENGINE
1. Park vehicle on level surface.
2. Move selector lever to "P" or "N" position.
3. Turn ignition switch OFF.
4. Start engine.
Does the engine start?
YES - GO TO 2.
NO - Stop the road test and go to "P" or "N" Position".
2.CHECK STARTING THE ENGINE
1. Turn ignition switch ON.
2. Move selector lever to "D", "M" or "R" position.
3. Start engine.
Does the engine start in any positions?
YES - Stop the road test and go to "P" or "N" Position".
NO - GO TO 3.
3.CHECK "P" POSITION FUNCTIONS
1. Move selector lever to "P" position.
2. Turn ignition switch OFF.
3. Release the parking brake.
4. Push the vehicle forward or backward.
5. Engage the parking brake.
When you push the vehicle with disengaging the parking brake, does it move?
YES - Enter a check mark at "P" Position, Vehicle Moves When Pushed" on the "Diagnostic
Worksheet Chart", GO TO 4.
NO - GO TO 4.
4.CHECK "N" POSITION FUNCTIONS
1. Start engine.
2. Move selector lever to "N" position.
3. Release the parking brake.
Does vehicle move forward or backward?
YES - Enter a check mark at "N" Position, Vehicle Moves" on the "Diagnostic Worksheet
Chart", GO TO 5.
NO - GO TO 5.
5.CHECK SHIFT SHOCK
1. Engage the brake.
2. Move selector lever to "D" position.
When the A/T is shifted from "N" to "D", is there an excessive shock?
YES - Enter a check mark at "N" to "D" Position)" on the "Diagnostic Worksheet
Chart", GO TO 6.
NO - GO TO 6.
6.CHECK "R" POSITION FUNCTIONS
1. Engage the brake.
2. Move selector lever to "R" position.
3. Release the brake for 4 to 5 seconds.
Does the vehicle creep backward?
YES - GO TO 7.
NO - Enter a check mark at "R" Position" on the "Diagnostic Worksheet Chart", GO TO 7.
7.CHECK "D" POSITION FUNCTIONS
Inspect whether the vehicle creep forward when the A/T is put into the "D" position.
Does the vehicle creep forward in the "D" position?
YES - Go to "CRUISE TEST - PART 1".
NO - Enter a check mark at "D" Position" on the "Diagnostic Worksheet Chart", then continue the road test. Go to "CRUISE TEST - PART 1".

CRUISE TEST - PART 1
1.CHECK STARTING OUT FROM D1
1. Drive the vehicle for about 10 minutes to warm up the engine oil and ATF.
Appropriate temperature for the ATF: 50 to 80�C (122 to 176�F)
2. Park the vehicle on a level surface.
3. Move selector lever to "P" position.
4. Start the engine.
5. Move selector lever to "D" position.
6. Press the accelerator pedal about half way down to accelerate the vehicle.
With CONSULT-III
Read the value of "GEAR". Refer to Consult-III Function (Transmission).
Starts from D1?
YES - GO TO 2.
NO - Enter a check mark at on the "Diagnostic Worksheet
Chart", GO TO 2.
2.CHECK SHIFT-UP D1 to D2
Press down the accelerator pedal about half-way and inspect if the vehicle shifts up (D1 to D2) at the appropriate speed. Refer to Vehicle Speed at Which Gear Shifting Occurs.
With CONSULT-III
Read the value of "GEAR", "ACCELE POSI" and "VEHICLE SPEED" in "DATA MONITOR" in "TRANSMISSION". Refer to Consult-III Function (Transmission).
Does the A/T shift-up D1 to D2 at the correct speed?
YES - GO TO 3.
Enter a check mark at on the "Diagnostic Worksheet
NO
Chart", GO TO 3.
3.CHECK SHIFT-UP D2 to D3
Press down the accelerator pedal about half-way and inspect if the vehicle shifts up (D2 to D3) at the appropriate speed. Refer to Vehicle Speed at Which Gear Shifting Occurs.
With CONSULT-III
Read the value of "GEAR", "ACCELE POSI" and "VEHICLE SPEED" in "DATA MONITOR" in "TRANSMISSION". Refer to Consult-III Function (Transmission).
Does the A/T shift-up D2 to D3 at the correct speed?
YES - GO TO 4.
Enter a check mark at on the "Diagnostic Worksheet
NO
Chart", GO TO 4.
4.CHECK SHIFT-UP D3 to D4
Press down the accelerator pedal about half-way and inspect if the vehicle shifts up (D3 to D4) at the appropriate speed. Refer to Vehicle Speed at Which Gear Shifting Occurs.
With CONSULT-III
Read the value of "GEAR", "ACCELE POSI" and "VEHICLE SPEED" in "DATA MONITOR" in "TRANSMISSION". Refer to Consult-III Function (Transmission).
Does the A/T shift-up D3 to D4 at the correct speed?
YES - GO TO 5.
Enter a check mark at on the "Diagnostic Worksheet
NO
Chart", GO TO 5.
5.CHECK SHIFT-UP D4 to D5
Press down the accelerator pedal about half-way and inspect if the vehicle shifts up (D4 to D5) at the appropriate speed. Refer to Vehicle Speed at Which Gear Shifting Occurs.
With CONSULT-III
Read the value of "GEAR", "ACCELE POSI" and "VEHICLE SPEED" in "DATA MONITOR" in "TRANSMISSION". Refer to Consult-III Function (Transmission).
Does the A/T shift-up D4 to D5 at the correct speed?
YES - GO TO 6.
Enter a check mark at on the "Diagnostic Worksheet
NO
Chart", GO TO 6.
6.CHECK LOCK-UP
When releasing accelerator pedal (closed throttle position signal: OFF) from D5, check lock-up from D5 to L/U. Refer to Vehicle Speed at Which Gear Shifting Occurs.
With CONSULT-III
Select "TCC SOLENOID" in "DATA MONITOR" in "TRANSMISSION". Refer to Consult-III Function (Transmission).
Does it lock-up?
YES - GO TO 7.
NO - Enter a check mark at A/T Does Not Lock-Up on the "Diagnostic Worksheet Chart", GO
TO 7.
7.CHECK LOCK-UP HOLD
Check hold lock-up.
With CONSULT-III
Select "TCC SOLENOID" in "DATA MONITOR" in "TRANSMISSION". Refer to Consult-III Function (Transmission).
Does it maintain lock-up status?
YES - GO TO 8.
NO - Enter a check mark at A/T Does Not Hold Lock-Up Condition on the "Diagnostic Worksheet Chart", then continue the road test.
8.CHECK LOCK-UP RELEASE
Check lock-up cancellation by depressing brake pedal lightly to decelerate.
With CONSULT-III
Select "TCC SOLENOID" in "DATA MONITOR" in "TRANSMISSION". Refer to Consult-III Function (Transmission).
Does lock-up cancel?
YES - GO TO 9.
NO - Enter a check mark at Lock-Up Is Not Released on the "Diagnostic Worksheet Chart", GO TO 9.
9.CHECK SHIFT-DOWN D5 to D4
Decelerate by pressing lightly on the brake pedal.
With CONSULT-III
Read the value of "GEAR" and "ENGINE SPEED" in "DATA MONITOR" in "TRANSMISSION". Refer to Consult-III Function (Transmission).
When the A/T shift-down D5 to D4, does the engine speed drop smoothly back to idle?
YES - 1. Stop the vehicle.
2. Go to "CRUISE TEST - PART 2".
NO - Enter a check mark at Engine Speed Does Not Return to Idle on the "Diagnostic Worksheet Chart", then continue the road test. Go to "CRUISE TEST - PART 2".

CRUISE TEST - PART 2
1.CHECK STARTING FROM D1
1. Move selector lever to "D" position.
2. Accelerate at half throttle.
With CONSULT-III
Read the value of "GEAR" in "DATA MONITOR" in "TRANSMISSION". Refer to Consult-III Function (Transmission).
Does it start from D1?
YES - GO TO 2.
NO - Enter a check mark at on the "Diagnostic Worksheet
Chart", GO TO 2.
2.CHECK SHIFT-UP D1 to D2
Press the accelerator pedal down all the way and inspect whether or not the A/T shifts up (D1 to D2) at the correct speed. Refer to Vehicle Speed at Which Gear Shifting Occurs.
With CONSULT-III
Read the value of "GEAR", "ACCELE POSI" and "VEHICLE SPEED" in "DATA MONITOR" in "TRANSMISSION". Refer to Consult-III Function (Transmission).
Does the A/T shift-up D1 to D2 at the correct speed?
YES - GO TO 3.
Enter a check mark at on the "Diagnostic Worksheet
NO
Chart", GO TO 3.
3.CHECK SHIFT-UP D2 to D3
Press the accelerator pedal down all the way and inspect whether or not the A/T shifts up (D2 to D3) at the correct speed. Refer to Vehicle Speed at Which Gear Shifting Occurs.
With CONSULT-III
Read the value of "GEAR", "ACCELE POSI" and "VEHICLE SPEED" in "DATA MONITOR" in "TRANSMISSION". Refer to Consult-III Function (Transmission).
Does the A/T shift-up D2 to D3 at the correct speed?
YES - GO TO 4.
Enter a check mark at on the "Diagnostic Worksheet
NO
Chart", GO TO 4.
4.CHECK SHIFT-UP D3 to D4 AND ENGINE BRAKE
When the A/T changes speed D3 to D4, return the accelerator pedal.
With CONSULT-III
Read the value of "GEAR" in "DATA MONITOR" in "TRANSMISSION". Refer to Consult-III Function (Transmission).
Does the A/T shift-up D3 to D4 and apply the engine brake?
YES - 1. Stop the vehicle.
2. Go to "CRUISE TEST - PART 3".
Enter a check mark at on the "Diagnostic Worksheet
NO
Chart", then continue the road test. Go to "CRUISE TEST - PART 3".

CRUISE TEST - PART 3
1.MANUAL MODE FUNCTION
Move to manual mode from "D" position.
Does it switch to manual mode?
YES - GO TO 2.
NO - Continue road test and add check mark to Cannot Be Changed to Manual Mode on the "Diagnostic Worksheet Chart", GO TO 2.
2.CHECK SHIFT-DOWN
During manual mode driving, is downshift from M5 to M4 to M3 to M2 to M1 performed?
With CONSULT-III
Read the value of "GEAR" in "DATA MONITOR" in "TRANSMISSION". Refer to Consult-III Function (Transmission).
Is downshifting correctly performed?
YES - GO TO 3.
Enter a check mark at "Vehicle Does Not Shift" at the corresponding position (5th to 4th, 4th to
NO
3rd, 3rd to 2nd, 2nd to 1st) on the "Diagnostic Worksheet Chart", GO TO 3.
3.CHECK ENGINE BRAKE
Check engine brake.
Does engine braking effectively reduce speed in M1 position?
YES - 1 With CONSULT-III
1. Stop the vehicle.
2. Select "SELF-DIAG RESULTS" in "TRANSMISSION".
YES - 2 Without CONSULT-III
1. Stop the vehicle.
2. Perform self-diagnostics. Refer to Reading and Clearing Diagnostic Trouble Codes.
NO - 1 - With CONSULT-III
1. Enter a check mark at Vehicle Does Not Decelerate By Engine Brake on the "Diagnostic Worksheet Chart".
2. Select "SELF-DIAG RESULTS" in "TRANSMISSION".
NO - 2 - Without CONSULT-III
1. Enter a check mark at Vehicle Does Not Decelerate By Engine Brake on the "Diagnostic Worksheet Chart".
2. Perform self-diagnostics. Refer to Reading and Clearing Diagnostic Trouble Codes.