ML 320 (163.154) V6-3.2L (112.942) (1998)
Seat Belt Control Module: Description and Operation
GF91.60-P-4006-02GH Emergency Tensioning Retractor Control Module With Airbag, Purpose
GF91.60-P-4006-02GH Emergency Tensioning Retractor Control Module With Airbag, Purpose
The emergency tensioning retractor control module with airbag (N2/2) fulfills the following functions in the event of a crash:
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Recognition and evaluation of crash according to type and severity
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Recognition of switching state of front left seat belt buckle/belt lock switch (S68/7) and front right seat belt buckle/belt lock switch (S68/8) at the
moment of impact
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Triggering driver and passenger airbags
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Triggering driver and passenger emergency tensioning retractors
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Triggering driver and passenger side airbags
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Sending a digital "crash signal" to the all-activity module AAM (N10)
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Storing up to three crash logs
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Evaluation of the data received from the front passenger seat occupied recognition sensor with automatic child seat recognition (B48) (passenger
seat occupied/not occupied; child present/not present; direction of child seat; etc.).
In normal operation the emergency tensioning retractor control module with airbag (N2/2) also has the following functions:
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Self-test when circuit 15R is switched "ON" and continuous system monitoring during vehicle operation.
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Storing up to 5 recognized malfunctions in the DTC memory
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Control of the SRS malfunction indicator lamp (A1e15) in the instrument cluster
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Control of the airbag OFF indicator lamp (A1e56) in the instrument cluster
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Control of the seat belt reminder lamp (A1e9) in the instrument cluster
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Communication with the hand-held tester (HHT) via the 16-pin diagnostic interface in the driver's footwell (reading out DCT memory, coding
control module).
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Preventing erroneous triggering during normal operation with additionally implemented safety sensor.