Defect Code 30

Defect Code 30:

*D* Defect code memory: 30 Acceleration Signal Front Axle (Vertical):

Troubleshooting: Check wire and repair if necessary: From 26-pin control unit connector Pin 24 to acceleration sensor. If defect is not rectified, check acceleration sensor:

Procedure: Remove acceleration sensor.

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 V 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 > 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.