Information
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Values
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Used by
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The value depends on the following sensor input, signal or function
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A/C
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ON/OFF
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EDC 15, PSG 16 (Cars with D223) T7 (Cars with B205, B235)
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A/C (bus from ACC), coolant temperature (bus from T7/EDC 15/PSG 16), A/C pressure and evaporator temperature.
Trionic EDC 15 and PSG 16 use this information to control the relays.
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A/C Pressure
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0-30 bar
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EDC 15, PSG 16 (Cars with D223) T7 (Cars with B205, B235)
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A/C pressure sensor
EDC 15/PSG 16 and T7 use this information for load compensation.
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Current consumption
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0-255 A
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EDC 15 and PSG 16 (Cars with D223) T7 (Cars with B205, B235)
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Control module activation of the relay outputs for the radiator fans and the electrically heated rear window
Trionic uses the information for load compensation.
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Position lights
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ON/OFF
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SID
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Control module activation of the relay output for the headlamp relay
SID uses the information for the instrument lighting functions.
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Electrically heated rear window
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ON/OFF
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ACC
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Control module activation of the relay output for the electrically heated rear window
ACC uses the information to confirm that the rear window heating is active.
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Rear fog light defective
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YES/NO
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SID
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Control module current measurement of output to lamp
SID uses the information to display a CHECK message.
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Left Direction Indicator
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ON/OFF
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MIU,
SID
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Control module activation of output to lamps
MIU uses the information to indicate activated LH direction indicators with the control lamp on the main instrument unit
SID uses the information for acoustic indication of activated direction indicators “tick-tock”.
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Right Direction Indicator
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ON/OFF
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MIU,
SID
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Control module activation of output to lamps
MIU uses the information to indicate activated RH direction indicators with the control lamp on the main instrument unit.
SID uses the information for acoustic indication of activated direction indicators “tick-tock”.
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Rear Fog Light
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ON/OFF
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MIU
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Control module activation of output to fog light
MIU uses the information to turn on/off the rear fog light indicator on the main instrument unit.
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Sound
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Acoustic information
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SID
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Control module programming and seat-belt buckle switches, driver's door or passenger's door open (bus from TWICE)
SID uses the information to generate acoustic warnings.
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Ignition +B
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ON/OFF
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Audio, TWICE
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Ignition switch
Informs Audio and TWICE of the position of the ignition switch.
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Ignition +15
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ON/OFF
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-
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Ignition switch
Informs TWICE of the position of the ignition switch.
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Ignition +54
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ON/OFF
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TWICE
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Ignition switch
Informs TWICE of the position of the ignition switch.
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Ignition +50
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ON/OFF
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TWICE, ACC, T7(Cars with B205, B235)
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+15 present but not +54
Informs TWICE and ACC of the position of the ignition switch.
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Idling speed increase
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ON/OFF
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T7
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Radiator fan High has been activated once during the trip.
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Reverse gear
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ON/OFF
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T7
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Reversing lights switch
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Diagnostics
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Tech 2
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Control module should be live and the bus leads intact.
See Bus and diagnostic communication
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