Check Tie Rod Measurements
Check Tie Rod MeasurementsNOTE:
If you are working on a dealer inventory vehicle that has never had a front end alignment tie rod measurement check is not necessary. Skip to Perform Steering Wheel and Steering Angle Sensor Neutral Position Adjustments shown below. Apply tie rod measurement procedure to all other vehicles.
1. Measure "L" on both front tie rods as shown in Figure 16.
^ If both measurements are 73 - 80 mm each:
> Skip to Perform Steering Wheel and Steering Angle Sensor Neutral Position Adjustments, below and perform Step 3, 4, and 6 only.
^ If either or both measurements are not within the above range:
> Adjust measurement "L" on both tie rods to 78 mm (see Figure 16).
NOTE:
If the tie rods require adjustment a front wheel toe-in alignment will also need to be performed. You will be instructed to perform this alignment later in this procedure.
2. Go to Perform Steering Wheel and Steering Angle Sensor Neutral Position Adjustments below.
Perform Steering Wheel and Steering Angle Sensor Neutral Position Adjustments
3. Perform steering wheel neutral (center) position adjustment using C-III:
a. Open/start ASIST on the C-III computer.
^ Ignition ON with engine OFF.
CAUTION:
Do not start the engine at any time during this procedure.
b. Select CONSULT Utilities CONSULT-III and wait for the Detecing VI/MI in progress message to clear.
c. Select the detected VI and then select Connect.
^ Wait for the Checking the firmware version message to clear.
d. Select Vehicle Name (Infiniti M37/M56) Model Year (2011) and then and then click on Select.
e. Verify vehicle information and then Select Confirm.
f. When CAN diagnosis completes select Diagnosis (see Figure 17).
^ On the next screen once CAN Diagnosis reaches 51% select Direct Diagnosis Mode (see Figure 17a).
g. Select System Diagnosis (see Figure 18).
h. Select (highlight) 4WAS(FRONT) and then select OK. See Figure 19.
i. Select Data Monitor (see Figure 20).
j. Select (highlight) 4WAS(FRONT) and ABS and then click on Select Monitor Item (see Figure 21).
k. On the 4WAS tabbed screen select (highlight) ACTR ROTA ANG (see Figure 22).
L. Select the ABS screen tab select (highlight) STR ANGLE SIG and then select Start (see Figure 23).
^ After selecting Start if a message window pops up stating "All the scripts and recorded data in VI will be erased. Do you want to erase them? select "Yes".
m. With the screen in Figure 24 displayed monitor the value for STRANGLE SIG while driving straight ahead.
^ Write down this value.
^ It is recommended to have a passenger perform monitoring.
NOTE:
Values shown may be different than those monitored on your vehicle.
n. Set the vehicle on an alignment rack with the front tires positioned on the turn-plates (rotating pads).
^ Remove all turn-plate lock pins.
0. Set the value for ACTR ROTA ANG to zero degrees (0°) by turning the steering wheel (see Figure 25).
^ It may be necessary to make "quick" steering inputs/movements for this value to change.
p. Next set STR ANGLE SIG to the value written down in Step 3 m by (see Figure 25).
^ Set this value by turning the steering wheel slowly.
^ The ACTR ROTA ANG value needs to stay at "0.0". It should not change during STR ANGLE SIG setting if the steering wheel is turned slow enough.
IMPORTANT:
Once these values are displayed leave the steering wheel in its current position. Do not turn the steering wheel again until instructed in Step 3 v.
q. Select the Back button to get to the screen shown in Figure 26 and then select System Diagnosis.
r. Select (highlight) 4WAS(FRONT) and then select OK. See Figure 27.
s. Select Active Test (see Figure 28).
t. Select (highlight) LOCK OPERATION and then select Next. See Figure 29.
U. Select RELEASE (see Figure 30).
V. While unlocked turn the steering wheel until it is visually centered (neutral position).
w. Select LOCK (see Figure 31).
Steering wheel neutral position (centering) adjustment is now complete.
4. Perform steering angle sensor neutral position adjustment using C-III:
NOTE:
Ignition should be ON with engine OFF.
a. Continuing from Step 3 w click on the Back button until the SELECT SYSTEM screen appears (see Figure 32).
b. Select (highlight) ABS and then select OK (see Figure 32).
CAUTION:
Do not start the engine at any time during this procedure.
c. Select Work support (see Figure 33).
d. Select (highlight) ST ANGLE SENSOR ADJUSTMENT and then select Next (see Figure 34).
^ At this time, make sure the steering wheel is still in the neutral (centered) position.
IMPORTANT:
After verifying steering wheel position do not touch the steering wheel again during the remainder of this procedure.
e. Select Start (see Figure 35).
NOTE:
The vehicle does not need to be driven.
f. When the screen in Figure 36 appears select End.
g. Turn the ignition OFF and then turn it back ON.
h. Steering angle sensor neutral position adjustment is now complete.
I. If Step 5 does not need to be performed leave C-III and the ignition ON (with engine OFF) and then perform Erase DTCs from all Systems.
5. This step is only for vehicles that had the tie rods adjusted in Step 1.
Perform front wheel toe-in alignment (adjust as necessary).
6. Test drive the vehicle verify the steering wheel is centered while driving straight.
Steering wheel and steering angle sensor neutral position adjustments and front end toe-in inspection/adjustment (if needed) are now complete. Leave C-III and the ignition ON (with engine OFF) and then perform Erase DTCs from all systems.