Error check with the sound generator
You need a multimeter for verification. Then proceed as follows:
- Set the multimeter to "continuity test"
- Hold one probe tip to one of the marked pins on the connector and hold the other probe tip to the outer case of the sound generator.
- Repeat this measurement procedure for the other pin on the connector as well.
» A ground short circuit and thus a defect of the sound generator is present, as long as a corresponding continuity signal sounds / appears on the multimeter. - Now check the cables leading to the sound generator:
» Remove the 8 pin connector from the controller. - Hold one of the two probes to pin 8 and the other to a ground point on the vehicle.
- Repeat this measurement also on pin 7 and, if a second sound generator is installed, also on pin 5 and pin 6.
» A ground short circuit and thus a defect in the cables leading to the sound generator is present, provided that a corresponding throughput signal sounds / appears on the multimeter.
In addition, the passage of the two lines to the loudspeaker must be checked as follows:
- To do this, measure from pin 8 (8-pin connector control unit) to pin 1 (2-pin connector sound generator).
- Then measure from pin 7 (8-pin connector control unit) to pin 2 (2-pin plug sound generator).
- If a second sound generator is installed, measure from pin 5 (8-pin connector control unit) to pin 2 (2-pin connector sound generator) and from pin 6 (8-pin connector control unit) to pin 1 (2-pin connector sound generator).
All measurements must have a continuity signal – if this is not the case, the corresponding line is damaged and needs to be checked.
