Step
| Action
| Value(s)
| Yes
| No
|
DEFINITION: On a smooth, flat road, the vehicle has a left or right
steering force that is eliminated when the driver places the transaxle in
Neutral. The magnitude of the steering force is usually (but not always)
dependent on the amount of torque which is applied to the engine. Torque
steer at constant highway speed is frequently mistaken for lead/pulls.
|
1
| Did you road test the vehicle?
| --
|
Go to Step 2
| Road test the vehicle
|
2
| Inspect the driving wheel tires.
Do the driving wheel tires have the same size, make and equal tread
depth?
| --
|
Go to Step 3
|
Go to Step 19
|
3
| Adjust the tire pressure to specifications.
Is the action complete?
| --
|
Go to Step 4
| --
|
4
| Inspect the front suspension. Refer to
Suspension Component Inspection
in Front Suspension.
Does the front suspension show signs of worn or damaged parts?
| --
|
Go to Step 17
|
Go to Step 5
|
5
|
- Drive the vehicle on a straight, smooth, flat (crown-free) road
surface at 64-97 km/h (40-60 mph).
- Shift the transaxle to Neutral gear and allow the vehicle to coast.
- Momentarily release the steering wheel and note any change in
the direction of travel.
- Repeat this road test in each direction in order to eliminate
crosswind effects. Lead/pull caused by road crowns and crosswinds is normal.
Does the vehicle lead/pull with the transaxle in Neutral?
| --
|
Go to Step 16
|
Go to Step 6
|
6
|
- Place the transaxle in Drive gear.
- Lightly accelerate the vehicle on a straight, smooth, flat (crown-free)
road surface at 64-97 km/h (40-60 mph). Momentarily
release the steering wheel.
- Repeat this road test in each direction in order to eliminate
crosswind effects. Lead/pull caused by road crowns and crosswinds is normal.
Does the vehicle noticeably deviate from a straight path in Drive?
| --
|
Go to Step 7
|
Go to Step 18
|
7
|
- Swap the front tire/wheel assemblies.
- Lightly accelerate the vehicle on a straight, smooth, flat (crown-free)
road surface at 64-97 km/h (40-60 mph). Momentarily
release the steering wheel.
- Repeat this road test in each direction in order to eliminate
crosswind effects. Lead/pull caused by road crowns and crosswinds is normal.
Does the vehicle torque steer in the opposite direction?
| --
|
Go to Step 8
|
Go to Step 12
|
8
|
- Swap the left front tire/wheel assembly with the left rear tire/wheel
assembly.
- Lightly accelerate the vehicle on a straight, smooth, flat (crown-free)
road surface at 64-97 km/h (40-60 mph). Momentarily
release the steering wheel.
- Repeat this road test in each direction in order to eliminate
crosswind effects. Lead/pull caused by road crowns and crosswinds is normal.
Does the vehicle still have torque steer?
| --
|
Go to Step 9
| Vehicle OK
|
9
|
- Swap the right front tire/wheel assembly with the right rear tire/wheel
assembly.
- Lightly accelerate the vehicle on a straight, smooth, flat (crown-free)
road surface at 64-97 km/h (40-60 mph). Momentarily
release the steering wheel.
- Repeat this road test in each direction in order to eliminate
crosswind effects. Lead/pull caused by road crowns and crosswinds is normal.
Does the vehicle still have torque steer?
| --
|
Go to Step 10
| Vehicle OK
|
10
|
- Position the tire/wheel assembly back to their original positions.
- Measure Z height. Refer to
Trim Height Specifications
.
Is the left to right difference less than the specified value?
| 6 mm (0.24")
|
Go to Step 11
|
Go to Step 13
|
11
| Measure the transaxle height as
shown in the figure.
Is the left to right difference less than the specified value?
| 6 mm (0.24")
|
Go to Step 14
|
Go to Step 15
|
12
| Measure Z height.
Is the left to right difference less than the specified value?
| 6 mm (0.24")
|
Go to Step 11
|
Go to Step 13
|
13
|
- Correct the Z height.
- Correct the camber.
- Correct the toe.
- Lightly accelerate the vehicle on a straight, smooth, flat (crown-free)
road surface at 64-97 km/h (40-60 mph). Momentarily
release the steering wheel.
- Repeat this road test in each direction in order to eliminate
crosswind effects. Lead/pull caused by road crowns and crosswinds is normal.
Does the vehicle still have torque steer?
| --
|
Go to Step 11
| Vehicle OK
|
14
| The probable cause of the torque steer condition is that
the front wheel alignment is out of specification. Refer to
Wheel Alignment Measurement
in Wheel Alignment.
Is the action complete?
| --
| Vehicle OK
| --
|
15
|
- Correct the height difference by shimming or replacing the powertrain
mounts.
- Lightly accelerate the vehicle on a straight, smooth, flat (crown-free)
road surface at 64-97 km/h (40-60 mph). Momentarily
release the steering wheel.
- Repeat this road test in each direction in order to eliminate
crosswind effects. Lead/pull caused by road crowns and crosswinds is normal.
Does the vehicle still have torque steer?
| --
|
Go to Step 14
| Vehicle OK
|
16
| Refer to
Radial Tire Lead/Pull Correction
in Tires and Wheels.
Is the action complete?
| --
| Vehicle OK
| --
|
17
| Repair the front suspension components as necessary.
Is the action complete?
| --
|
Go to Step 5
| --
|
18
| Diagnose the vehicle for a memory steer condition.
Is the action complete?
| --
| Vehicle OK
| --
|
19
| Install driving tires with the same size, make, and equal
tread depth.
Is the action complete?
| --
|
Go to Step 3
| --
|
