User's Manual

18
STEERING ANGLE SENSOR MAINTENANCE
Service Checks:
1. Check all wiring and connectors. Some installations
also include an intermediate connector from the
steering angle sensor to the main vehicle wire harness.
Make sure all connections are free from visible damage.
2. Examine the sensor. Make sure the sensor, its
mounting screws, and the interface between the hub
and the steering column are not damaged.
Diagnostics:
The Bendix
®
brand steering angle sensor is only operational
in conjunction with a Bendix
®
ESP
®
EC‑80
™
Controller. No
independent diagnostics can be performed on the sensor.
See pages 38-39 for Diagnostic Trouble Codes (DTCs)
associated with this device.
Removal:
1. Remove steering column sheathing.
2. Depending upon manufacturer, the steering angle
sensor could be located either near the steering wheel,
necessitating the removal of the steering wheel, or
near the joint to the vehicle steering mechanism,
necessitating the disconnection of this linkage.
3. Unplug sensor cable assembly from body of sensor.
Squeeze the mounting tabs and pull gently on the
connector until it disengages.
4. Unscrew all three of the mounting screws that hold the
body of the sensor to the steering column body.
5. Slide the sensor over the column to remove. Take note
if the sensor label is facing upward or downward.
Installation:
1. Obtain a new sensor. The sensor is not repairable in
the eld.
2. Slide the sensor over the column. The center hub of the
sensor must be aligned with the corresponding notch
in the column. Different column manufacturers may
implement this hub alignment in different ways. The
sensor label should be facing in the same direction as
the removed sensor.
3. Assemble to column non‑moving plate with three self‑
locking screws.
4. Tighten screws to steering column manufacturer's
recommended torque specication.
5. Reconnect the connector. Ensure that there will be no
force applied to the sensor because the connector is
pulling on the sensor body.
6. If the wire harness leading to the sensor is being
replaced, ensure that it is adequately tie wrapped
so that the full motion of the steering column can be
achieved without pulling apart the connectors.
7. Reinstall the column sheathing. The sensor is not
protected against dirt or water intrusion, so care
must be taken not to introduce these elements during
installation.
STEERING ANGLE SENSOR CALIBRATION
The steering angle sensor calibration can only be achieved
when the sensor is powered by the Bendix ESP EC‑80
Controller. No stand‑alone sensor calibration can be
carried out. The calibration procedure is performed
using Bendix
®
ACom
®
Diagnostic software V6.7.2.5 or
higher. See “Troubleshooting Diagnostic Trouble Codes:
Steering Angle Sensor (Bendix
®
SAS-60
™
)” for the
calibration procedure using this tool. The sensor must be
recalibrated using ACom Diagnostic Software after any of
these situations:
• Replacement of the steering angle sensor;
• Any opening of the connector hub from the steering angle
sensor to the column;
• Any maintenance or repair work on the steering linkage,
steering gear or other related mechanism;
• Adjustment of the wheel alignment or wheel track; or
• After an accident that may have led to damage of the
steering angle sensor or assembly
If the steering angle sensor is not properly
recalibrated as needed, the yaw control system may
not function properly, which can result in a loss of
vehicle control.