Defect Code 30

Defect Code 30:

*D* Defect code memory: 30 Acceleration signal front axle (vertical):

Troubleshooting: Check wire and repair if necessary: From connector X

945 Pin 24 to acceleration sensor. If defect is not rectified, check acceleration sensor:

Procedure: Remove acceleration sensor (see Repair Instructions "EDC III").

The acceleration sensor features 3 connections: Terminal 15, ground, signal output to the control unit.

In order to check outside the vehicle, a voltage of approx. 12 Volt must be applied at terminal 15- input of sensor, the ground input must be connected to
negative.

Now measure the voltage at the signal output: At rest (acceleration = 0), a voltage of approx. 2.5 Volt must be measured if the acceleration sensor is intact.

During movement of the sensor (acceleration greater than zero), the measured value must be greater than or less than 2.5 Volt. For the sensor, maximum
acceleration means 0 Volt or 5 Volt depending on the direction of acceleration.

Replace defective sensors. Note: The 3 acceleration sensors of the EDC system (1 sensor for front body acceleration, 1 sensor for rear body acceleration, 1
sensor for longitudinal acceleration) are of identical design.