Acceleration/Deceleration Sensor: Testing and Inspection

COMBINED SENSOR INSPECTION

1. Turn the ignition switch off.

2. Remove the combined sensor installation nut.

3. Connect the M-MDS to the DLC-2.






4. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.

- When using the IDS (laptop PC)

1 Select "DataLogger".
2 Select "Modules".
3 Select "ABS".

- When using the PDS (Pocket PC)

1 Select "Module Tests".
2 Select "ABS".
3 Select "DataLogger".

5. Select the following PIDs, then inspect the lateral acceleration speed, longitudinal acceleration speed, roll rate and yaw rate.

- LAT_ACCL: (lateral acceleration speed)
- ACCLMTR: (longitudinal acceleration speed)
- YAW_RATE: (yaw rate)
- ROLL_RATE (roll rate)

a. Lateral acceleration speed inspection
i. Verify the LAT_ACCL change when the combined sensor is tilted to the left and right.






- If there is any malfunction, replace the combined sensor.

Standard
- When the sensor is tilted to the right (A): LAT_ACCL changes negatively.
- When the sensor is tilted to the left (B): LAT_ACCL changes positively.

b. Longitudinal acceleration speed inspection
i. Verify the ACCLMTR change when the combined sensor is moved forward and backward.






- If there is any malfunction, replace the combined sensor.

Standard
- When the sensor is tilted to forward (A): ACCLMTR changes negatively.
- When the sensor is tilted to backward (B): ACCLMTR changes positively.

c. Yaw rate inspection
i. Verify the YAW_RATE change when the combined sensor is rotated to the left and right.






- If there is any malfunction, replace the combined sensor.

Standard
- When the sensor is rotated to the right (A): YAW_RATE changes positively.
- When the sensor is rotated to the left (B): YAW_RATE changes negatively.

d. Roll rate inspection
i. Verify the ROLL_RATE change when the combined sensor is tilted to the left and right.






- If there is any malfunction, replace the combined sensor

Standard
- When the sensor is tilted to the right (A): ROLL_RATE changes positively
- When the sensor is tilted to the left (B): ROLL_RATE changes negatively