Vertical Acceleration Sensor Inspection

Press the engine start/stop button to select the OFF mode.
Remove the vertical acceleration sensor (see VERTICAL ACCELERATION SENSOR REPLACEMENT ). Do not disconnect the sensor connector.
Connect the HDS to the data link connector (DLC) (see HOW TO RETRIEVE DTCS AND FREEZE DATA WITH THE HDS (HONDA DIAGNOSTIC SYSTEM) ).
Start the engine, and wait 5 seconds.

With the HDS, check the VERTICALS VOLTAGE (F), (RR), or (LR) in the ACTIVE DAMPER SYSTEM DATA LIST at a "normal", "lay down", and "top down" each sensor positions by moving it (see table).

NORMAL POSITION

Fig 1: Identifying Vertical Acceleration 3P Sensor Connector (Normal Position)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

LAY DOWN POSITION

Fig 2: Identifying Vertical Acceleration 3P Sensor Connector (Lay Down Position)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

TOP DOWN POSITION

Fig 3: Identifying Vertical Acceleration 3P Sensor Connector (Top Down Position)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Sensor position	Specified voltage
Normal	2.2-2.8 V
Lay down	1.2-1.8V
Top down	0.2-0.8 V

If the voltages shown on the HDS are within the specified voltage in the all positions, the vertical acceleration sensor is OK. If the voltages are out of specification in only one position, the sensor is faulty.
Press the engine start/stop button to select the OFF mode.
Install the vertical acceleration sensor in the proper position (see VERTICAL ACCELERATION SENSOR REPLACEMENT ).