Yaw Rate
WARNING: This page is about a different car, the 2008 Acura CSX, 2007 Acura CSX, and 2006 Acura CSX. However, it is still accessible from the selected car via links, so may be relevant.
This diagnostic checks the yaw rate sensor in the control unit. This device detects when the vehicle turns, and repositions the vehicle position icon on the map screen. For more detailed information, see the yaw rate sensor theory of operation under "System Description" (see YAW RATE SENSOR ).
- "Sensor" indicates the voltage output from the yaw rate sensor. It should indicate about 2.500 V when stopped.
- "Offset" is the reference voltage or standard within the yaw rate sensor. It also should indicate about 2.500 V when stopped.
- A "sensor" output voltage LOWER than the "Offset" voltage indicates that the vehicle is turning to the right.
A "sensor" output voltage HIGHER than the "Offset" voltage indicates that the vehicle is turning to the left.
- The yaw rate offset and sensor should both indicate about 2.500 V when stopped. If either reads zero or 5.000 V, replace the navigation unit.
- The yaw rate offset and sensor should be within /{| 0.01 V of each other when stopped. The sensor value should change relative to the offset as the car is turned while driving. If not, replace the navigation unit.
Example: Vehicle stopped
SENSOR VALUE SPECIFICATION
| Normal | Abnormal | ||
|---|---|---|---|
| Offset | 2.526 V | Offset | 2.526 V |
| Sensor | 2.516 | 2.536 V | Sensor | 2.623 V |
Example: Vehicle turning
SENSOR VALUE SPECIFICATION
| Normal | Abnormal | ||
|---|---|---|---|
| Offset | 2.526 V | Offset | 2.526 V |
| Sensor | 2.678 V (left turn) 2.478 V (right turn) |
Sensor | 2.623 V (no change on turns) |
The settings "CCW Cal Factor", "CW Cal Factor", and "Set" are for factory use only. THIS SHOULD NEVER BE USED.
NOTE:
Do not try to adjust the yaw rate sensor without instructions from the factory. See next paragraph for tuning.