GLK 350 4MATIC (204.987) V6-3.5L (272.971) (2010)
number, test status, partial tests not completed). These data can be used in the subsequent tests for test sequence control. The total size of the data
memory is 128 bytes.
System diagnosis
The system diagnosis is integrated as a software module in the processor for controlling central gateway functions.
For off-board diagnosis, the following on-board functions are realized by the processor responsible for controlling the central gateway functions:
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CAN line diagnosis
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CAN SPECIFIED/ACTUAL configuration
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Data logger for telediagnosis
Global variant coding
The processor responsible for controlling the central gateway functions forwards global information such as model series and national version over the
various CAN buses to the networked control units. The control units perform part of their configuration process to match this information.
Monitoring CAN bus idle
The monitoring of the CAN bus idle enables control units to be determined, which keep the CAN bus active at what otherwise is expected to be a CAN
bus idle period.
This information is filed in a nonvolatile memory. This in turn serves to ensure that even when the on-board electrical system battery (G1) has been
discharged and following a reset of the networked control units, it is still possible to determine whether the discharging of the on-board electrical system
battery was caused by the network or by an individual CAN user.
Interior CAN and LIN interface
The processor for controlling the basic functions also acts as an interface between the following databus systems:
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Instrument panel LIN (LIN 1)
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Wiper/inside rearview mirror LIN (LIN 2)
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Interior CAN
Reading in of sensors, pickups and signals
The input factors are read in via the following connections:
^
Direct line
^
Instrument panel LIN
^
Wiper/inside rearview mirror LIN
^
CAN
Direct line
The signals from the following components are read via a direct line:
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Refrigerant pressure sensor (B12)
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Outside temperature sensor (B14)
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Exterior lights switch (S1) (as of 1.6.10)
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Right front brake wear sensor (S10/2)
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Right rear brake wear sensor (S10/4)
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Brake fluid level switch (S11)
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Parking brake indicator switch (S12)
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Backup lamp switch (S16/2) (for transmission 711, 716)
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Coolant level switch (S41)
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Windshield washer system fluid level switch (S42)
Instrument panel LIN
The signals for the following components are read in over the instrument panel LIN:
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Exterior lights switch (up to 31.5.10)
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Hazard warning flasher switch (S6/1s1)
Wiper/inside rearview mirror LIN
The signals of the following components are read in via the wiper LIN:
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Inside rearview mirror (A67) (with code (249) Automatically dimming inside rearview mirror and outside mirror (driver))
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Garage door opener (A67n2) (with code (232) Garage door opener with frequency 284-390 MHz)
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Light sensor (B38/1) (without code (345) Rain sensor)
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Rain/light sensor (B38/2) (with code (345) Rain sensor)