Forum Audi A8 Klub Polska [D3 preFL ALL ] Opisa wartości bloków pomiarowych klimatyz

mkbewe

Panowie potrebuje opis bloków pomiarowych w sterowniku klimy

Dziś sobie tak przezglądałem poszczególne boki i w bloku nr 41 i 42 takie coś

temperatura -40 ?? tak ma być czy raczej jakiś czujnik walnięty

danishow · Wysłany: 2017-08-06, 20:43

W praktyce wygląda to tak, że taka wartość pokazywana jest jak dany czujnik jest np. odpięty ...ale wtedy wyskakiwałby błąd ów czujnika.
Najwyraźniej jest to wartość czujnika, którego u Ciebie fabrycznie nie było.

mkbewe · Wysłany: 2017-08-06, 22:40

Ahaa no moze tez tak byc jak piszesz

pogi1986 · Wysłany: 2017-12-28, 14:02

gdzie sprawdzić poszczególne wloty konkretnie chodzi mi o srodkowe nawiewy i na szybe jaki nanal i które bloki sa za to odpowiedzialne ?

drago_o · Wysłany: 2017-12-28, 16:23

Mam coś takiego

Cytat:

Air conditioner operating and display unit -J255

Measured value block 001

Display zone 1 - 0,750A

Measured control current for air conditioning system compressor regulating valve -N280 (in Amperes)
J Readout 0.05 A
- Compressor off.
J Readout 0.30 A to 0.65 A
- Compressor in loop control mode

Display zone 2 - 73%

Duty factor for operation of compressor regulating valve -N280 (in %)
J Readout 0 percent
- Compressor off.
J Readout 30....40 percent to 100 percent
- Compressor in loop control mode

Display zone 3 - 40%

Duty factor for pressure signal from high-pressure sender -G65 (in percent)
J Readout 0 percent to 5 percent
- Open circuit in wiring/voltage supply or earth connection
- High-pressure sender -G65 defective
J Readout 5 percent to 12 percent
- Pressure in refrigerant circuit too low (system empty)
- High-pressure sender -G65 defective
J Readout 12 percent to 87.5 percent
- Pressure in refrigerant circuit within permissible range
J Readout above 87.5...90 percent
- Pressure in refrigerant circuit too high
- Activation of radiator fan not OK
- High-pressure sender -G65 defective
- Radiator and/or condenser dirt-clogged
- Fault in refrigerant circuit
J Readout 90....100 percent
- Short
- Open circuit in voltage supply or earth connection
- High-pressure sender -G65 defective

Display zone 4 - 12bar

Pressure in refrigerant circuit (in bar absolute pressure)
J Readout below 2.6 bar
- Pressure in refrigerant circuit too low (system empty)
- High-pressure sender -G65 defective
J Readout 2.6 bar to 29 bar
- Pressure in refrigerant circuit within permissible range
J Readout above 29 bar (even for a short time)
- Pressure in refrigerant circuit too high
- Activation of radiator fan not OK
- High-pressure sender -G65 defective
- Radiator and/or condenser dirt-clogged
- Fault in refrigerant circuit

Measured value block 002

Display zone 1 - 0,0

Current valid compressor shut-off condition

Display zone 2 - 12,0

Last compressor shut-off condition

Display zone 3 - 11,0

Last-but-one compressor shut-off condition

Display zone 4 - 12,0

Last-but-two compressor shut-off condition

Breakdown of compressor shut-off conditions:
- 0 Compressor on (no shut-off condition detected)
- 1 Compressor off (pressure in refrigerant circuit was or is too high)
- 2 Compressor off (basic setting not performed)
- 3 Compressor off (pressure in refrigerant circuit is too low)
- 4 Compressor off (engine has been running for less than 5 sec.)
- 5 Compressor off (engine speed is below 300 rpm)
- 6 Compressor off (compressor switched off by ECON12 Compressor off (because of a request from the engine control unit)
- 13 Compressor off (because of a faulty signal from high-pressure sender G65)
- 14 Compressor off (because of a fault in the data bus system)
- 15 Compressor off (the pressure in the refrigerant circuit in this driving period was at least 30 times too high)
- 16 Compressor off (the measured temperature downstream of the evaporator has for over a minute been below 0°C)
- 17 Compressor off (the measured temperature downstream of the evaporator is below -5°C)
- 18 Compressor off (there is no valid measured value for the ambient temperature, e.g.: both sensors defective)
- 19 Compressor off (the engine is not running and the -J255 is in auxiliary heating mode)
- 20 Compressor off (no readout currently planned)
- 21 Compressor off (the automatic air recirculation function is set, the measured ambient temperature is between -8°C and 5°C, there is no request for air recirculation
- 22 Compressor off (the measured ambient temperature is between -8°C and 5°C, there is
a request for air recirculation but the measured temperature in the passenger compartment is below 8°C)
- 23 Compressor off (a fault in the radiator fans activation)

Measured value block 003

Display zone 1 - 194,0

Actual feedback value of recirculated air flap control motor potentiometer -G143 (in recirculated air flap control motor -V113)

Display zone 2 - 201,0

Specified feedback value for recirculated air flap control motor potentiometer -G143 (calculated by operating and display unit -J255)
J Display range 55...205

Display zone 3 - 64,0

Value of the recirculated air flap control motor potentiometer -G143 with control motor set to lower stop determined during basic setting and stored in the operating and display unit -J255 (air recirculation flap closed, fresh air mode)
J Readout above 55 and below 95

Display zone 4 - 196,0

Value of the recirculated air flap control motor potentiometer -G143 with control motor set to upper stop determined during basic setting and stored in the operating and display unit -J255 (air recirculation flap open)
J Readout above 165 and below 205

Measured value block 004

Display zone 1 - 79,0

Actual feedback value of air flow flap control motor potentiometer -G113 (in air flow flap control motor -V71)

Display zone 2 - 74,0

Specified feedback value for air flow flap control motor potentiometer -G113 (calculated by operating and display unit -J255)
J Display range 60...200

Display zone 3 - 79,0

Value of the air flow flap control motor potentiometer -G113 with control motor set to lower stop determined during basic setting and stored in the operating and display unit -J255 (air flow/fresh air flaps closed, recirculated air mode)
J Readout above 60 and below 100

Display zone 4 - 189,0

Value of the air flow flap control motor potentiometer -G113 with control motor set to upper stop determined during basic setting and stored in the operating and display unit -J255 (air flow/fresh air flaps open)
J Readout above 160 and below 200

Measured value block 005
Display zone 1 - 118,0

Actual feedback value of defroster flap control motor potentiometer -G135 (in defroster flap control motor -V107)

Display zone 2 - 120,0

Specified feedback value for defroster flap control motor potentiometer -G135 (calculated by operating and display unit -J255)
J Display range 70...195

Display zone 3 - 82,0

Value of the defroster flap control motor potentiometer -G135 with control motor set to lower stop determined during basic setting and stored in the operating and display unit -J255 (defroster flap closed)
J Readout above 70 and below 110

Display zone 4 - 177,0

Value of the defroster flap control motor potentiometer -G135 with control motor set to upper stop determined during basic setting and stored in the operating and display unit -J255 (defroster flap open)
J Readout above 155 and below 195

Measured value block 006

Display zone 1 - 85,0

Actual feedback value of front left defroster/chest vent shut-off flap control motor potentiometer -G318 (in front left defroster/chest vent shut-off flap control motor -V200)

Display zone 2 - 85,0

Specified feedback value for front left defroster/chest vent shut-off flap control motor potentiometer -G318 (calculated by operating and display unit -J255)
J Display range 10...250

Display zone 3 - 21,0

Value of the front left defroster/chest vent shut-off flap control motor potentiometer -G318 with control motor set to lower stop determined during basic setting and stored in the operating and display unit -J255 (flap closed)
J Readout above 10 and below 50

Display zone 4 - 236,0

Value of the front left defroster/chest vent shut-off flap control motor potentiometer -G318 with control motor set to upper stop determined during basic setting and stored in the operating and display unit -J255 (flap open)
J Readout above 210 and below 250

Measured value block 007

Display zone 1 - 85,0

Actual feedback value of front right defroster/chest vent shut-off flap control motor potentiometer -G317 (in front right defroster/chest vent shut-off flap control motor -V199)

Display zone 2 - 84,0

Specified feedback value for front right defroster/chest vent shut-off flap control motor potentiometer -G317 (calculated by operating and display unit -J255)
J Display range 5...250

Display zone 3 - 19,0

Value of the front right defroster/chest vent shut-off flap control motor potentiometer -G317 with control motor set to lower stop determined during basic setting and stored in the operating and display unit -J255 (flap closed)
J Readout above 5 and below 45

Display zone 4 - 236,0

Value of the front right defroster/chest vent shut-off flap control motor potentiometer -G317 with control motor set to upper stop determined during basic setting and stored in the operating and display unit -J255 (flap open)
J Readout above 200 and below 250

Measured value block 008

Display zone 1 - 15,0

Actual feedback value of left footwell flap control motor potentiometer -G139 (in left footwell flap control motor -V108)

Display zone 2 - 10,0

Specified feedback value for left footwell flap control motor potentiometer -G139 (calculated by operating and display unit -J255)
J Display range 5 ... 250

Display zone 3 - 15,0

Value of the left footwell flap control motor potentiometer -G139 with control motor set to lower stop determined during basic setting and stored in the operating and display unit -J255 (flap closed)
J Readout above 5 and below 50

Display zone 4 237,0

Value of the left footwell flap control motor potentiometer -G139 with control motor set to upper stop determined during basic setting and stored in the operating and display unit -J255 (flap open)
J Readout above 210 and below 250

Measured value block 009

Display zone 1 - 17,0

Actual feedback value of right footwell flap control motor potentiometer -G140 (in right footwell flap control motor -V109)

Display zone 2 - 11,0

Specified feedback value for right footwell flap control motor potentiometer -G140 (calculated by operating and display unit -J255)
J Display range 5...250

Display zone 3 - 16,0

Value of the right footwell flap control motor potentiometer -G140 with control motor set to lower stop determined during basic setting and stored in the operating and display unit -J255 (flap closed)
J Readout above 5 and below 45

Display zone 4 - 240,0

Value of the right footwell flap control motor potentiometer -G140 with control motor set to upper stop determined during basic setting and stored in the operating and display unit -J255 (flap open)
J Readout above 210 and below 250

Measured value block 010

Display zone 1 - 159,0

Actual feedback value of temperature flap control motor potentiometer -G92 (in temperature flap control motor -V68)

Display zone 2 - 166,0

Specified feedback value for temperature flap control motor potentiometer -G92 (calculated by operating and display unit -J255)
J Display range 80...180

Display zone 3 - 89,0

Value of the temperature flap control motor potentiometer -G92 with control motor set to lower stop determined during basic setting and stored in the operating and display unit -J255 (flap closed)
J Readout above 80 and below 120

Display zone 4 - 161,0

Value of the temperature flap control motor potentiometer -G92 with control motor set to upper stop determined during basic setting and stored in the operating and display unit -J255 (flap open)
J Readout above 140 and below 180

Measured value block 011

Display zone 1 - 108,0

Actual feedback value of centre vent control motor potentiometer -G138 (in centre vent control motor -V102)

Display zone 2 - 108,0

Specified feedback value for centre vent control motor potentiometer -G138 (calculated by operating and display unit -J255)
J Display range 65...195

Display zone 3 - 78,0

Value of the centre vent control motor potentiometer -G138 with control motor set to lower stop determined during basic setting and stored in the operating and display unit -J255 (flap closed)
J Readout above 65 and below 105

Display zone 4 - 181,0

Value of the centre vent control motor potentiometer -G138 with control motor set to upper stop determined during basic setting and stored in the operating and display unit -J255 (flap open)
J Readout above 155 and below 195

Measured value block 012

Display zone 1 - 240,0

Actual feedback value of rear left vent warm/cold flap control motor potentiometer -G351 (in rear left vent warm/cold flap control motor -V220)

Display zone 2 - 246,0

Specified feedback value for rear left vent warm/cold flap control motor potentiometer -G351 (calculated by operating and display unit -J255)
J Display range 5...250

Display zone 3 - 16,0

Value of the rear left vent warm/cold flap control motor potentiometer -G351 with control motor set to lower stop determined during basic setting and stored in the operating and display unit -J255 (flap closed)
J Readout above 5 or 35 and below 80

Display zone 4 - 241,0

Value of the rear left vent warm/cold flap control motor potentiometer -G351 with control motor set to upper stop determined during basic setting and stored in the operating and display unit -J255 (flap open)
J Readout above 180 and below 220 or 250

Measured value block 013

Display zone 1 - 240,0

Actual feedback value of rear right vent warm/cold flap control motor potentiometer -G352 (in rear right vent warm/cold flap control motor -V221)

Display zone 2 - 244,0

Specified feedback value for rear right vent warm/cold flap control motor potentiometer -G352 (calculated by operating and display unit -J255)
J Display range 5...250

Display zone 3 - 14,0

Value of the rear right vent warm/cold flap control motor potentiometer -G352 with control motor set to lower stop determined during basic setting and stored in the operating and display unit -J255 (flap closed)
J Readout above 5 or 35 and below 80

Display zone 4 - 239,0

Value of the rear right vent warm/cold flap control motor potentiometer -G352 with control motor set to upper stop determined during basic setting and stored in the operating and display unit -J255 (flap open)
J Readout above 180 and below 220 or 250

Measured value block 014

Display zone 1 - 212,0

Actual feedback value of left central vent control motor potentiometer -G136 (in left central vent control motor -V110)

Display zone 2 - 218,0

Specified feedback value for left central vent control motor potentiometer -G136 (calculated by operating and display unit -J255)
J Display range 25...230

Display zone 3 - 39,0

Value of the left central vent control motor potentiometer -G136 with control motor set to lower stop determined during basic setting and stored in the operating and display unit -J255 (flap closed)
J Readout above 25 and below 65

Display zone 4 - 213,0

Value of the left central vent control motor potentiometer -G136 with control motor set to upper stop determined during basic setting and stored in the operating and display unit -J255 (flap open)
J Readout above 190 and below 230

Measured value block 015

Display zone 1 - 213,0

Actual feedback value of right central vent control motor potentiometer -G137 (in right central vent control motor -V111)

Display zone 2 - 218,0

Specified feedback value for potentiometer -G137 in centre right vent control motor (calculated by operating and display unit -J255)
J Display range 25...230

Display zone 3 - 40,0

Value of the right central vent control motor potentiometer -G137 with control motor set to lower stop determined during basic setting and stored in the operating and display unit -J255 (flap closed)
J Readout above 25 and below 65

Display zone 4 - 213,0

Value of the right central vent control motor potentiometer -G137 with control motor set to upper stop determined during basic setting and stored in the operating and display unit -J255 (flap open)
J Readout above 190 and below 230

Measured value block 016

Display zone 1 - 232,0

Value of centre left vent sensor -G347
J Readout above 5 and below 250

Display zone 2 - 236,0

Value of centre right vent sensor -G348
J Readout above 5 and below 250

Display zone 3

Currently not used

Display zone 4

Currently not used

Measured value block 017

Display zone 1 - 30,0C

Readout of left vent temperature sender -G150 in °C

Display zone 2 - 27,0C

Readout of right vent temperature sender -G151 in °C

Display zone 3 - 27,0C

Readout of centre vent temperature sender -G191 in °C

Display zone 4

Currently not used

Measured value block 018

Display zone 1 - 15,0C

Readout of evaporator out-flow temperature sender -G263 in °C

Display zone 2 - 33,0C

Readout of fresh air intake temperature sensor -G89 in °C

Display zone 3 - 32,0C

Measured value in °C of ambient temperature sensor -G17 received from data bus system
- Depending on the version of the operating and display unit -J255, this value may also be shown in display zone 4

Display zone 4

Currently not used

Measured value block 019

Display zone 1 - 30,0C

Readout of dash panel temperature sensor -G56 in °C

Display zone 2 - 3000/min

Speed of temperature sensor blower -V42 in rpm
J Readout above 2000 rpm - blower speed OK
J Readout below 2000 rpm - blower -V42 not moving freely, replace

Display zone 3 - 61,0C

Coolant temperature in °C received from data bus system

Display zone 4 - ON

Operation of output to increase idling speed
J Readout = Off - no increase in idling speed requested by operating and display unit -J255
J Readout = On - increase in idling speed requested by operating and display unit -J255.

Measured value block 020

Display zone 1 - 640/min

Engine speed in rpm received from data bus system

Display zone 2 - 0,0km/h

Vehicle speed in km/h received from data bus system
J Readout = 0 - no road speed signal
J Readout = 1 - road speed signal from 1...5 km/h
J Readout above 1 - current vehicle speed in km/h

Display zone 3 - 0,0

Status of compressor torque transmitted on data bus
J Readout 0 (the readout is current)
J Readout 1 (the readout is outdated)

Display zone 4 - 18Nm

The necessary engine torque in Nm calculated by the operating and display unit -J255 and transmitted on the data bus system for operation of the compressor
J with compressor on - 1....25 Nm (the control valve is activated)
J with compressor off - below 1.0 Nm (the control valve -N280 is not activated)

Measured value block 021

Display zone 1

Currently not used

Display zone 2

Currently not used

Display zone 3 - 100,0%

Voltage at terminal 58d received by the data bus system
J Readout = 0....100 percent
- Depending on the setting of the illumination controller, brightness of backlighting of displays and in buttons.

Display zone 4 - 0,0%

Voltage at terminal 58s received by the data bus system
J Readout = 0 percent (with side lights off)
J Readout 1....100 percent (side lights on)
- Depending on the setting of the illumination controller, brightness of backlighting of displays and in buttons.

Measured value block 022

Display zone 1 - 8,8%

Request for radiator fan -V7 in percent transmitted on data bus
J Readout = 0...4 percent (no request from operating and display unit -J255 to activate radiator fan -V7)
J Readout = 5...100 percent (request from operating and display unit -J255 to activate radiator fan -V7)

Display zone 2 - 30,0%

Request for radiator fan -V7 in percent received from data bus system
J Readout 0…4 percent (no activation of radiator fan)
J Readout 5...68 percent
- The radiator fans are activated (at present the engine control unit activates the fans at max. 68 percent if the air conditioner requests 100 percent)

Display zone 3 - 7

Signal from air quality sensor -G238
J Readout = 7 (or 5) - Fresh air mode, no increased values for air impurities measured
J Readout = 1 - Minor increase in oxidisable gases in the air
J Readout = 2 - Greater increase in oxidisable gases in the air
J Readout = 3 - Minor increase in reducible gases in the air
J Readout = 4 - Greater increase in reducible gases in the air
J Readout = 0 - No signal from sensor -G238; sensor -G238 defective

Display zone 4 - 40

Request for fresh or recirculated air from operating and display unit -J255
J Readout = 0 or 00 (fresh air)
J Readout = 10 (request for recirculated air received from air quality sensor -G238 and being met; recirculated air mode)
J Readout = 11 or 12 or 13 (request for recirculated air received from air quality sensor -G238 and not being met; fresh air mode)
J Readout = 20, 30, 40 or 50 (request for recirculated air based on a specific setting; recirculated air mode)
J Readout = 60 (partial recirculated air mode, air flow and recirculated air flaps open)

Measured value block 023

Display zone 1 - OFF

Status of heated rear window switch -Z1 in operating and display unit -J255
J Readout = Rear window off or 0 (no activation, feedback lamp in heated rear window button
off)
J Readout = Rear window on or 1 (activation of heated rear window -Z1 on, feedback lamp in heated rear window on)

Display zone 2 - OFF

Signal to activate heated windscreen -Z2 (specification) transmitted on data bus system
- Readout Rear window off (operating and display unit -J255 transmits no request)
J Readout Rear window on (operating and display unit -J255 transmits a request)

Display zone 3 - OFF

Signal to activate heated rear window -Z1 (actual) received from data bus system
J Readout Rear window off (heating of rear window is off or is
not switched on despite request)
J Readout Rear window on (heating of rear window is on)

Display zone 4 0.0

Switching status of rear roller blind button -E385
J Readout off or 0 (rear roller blind button -E385 not pressed)
J Readout on or 1 (rear roller blind button -E385 pressed, closed)

Measured value block 024

Display zone 1 - 2,50V

Readout of sunlight penetration photosensor -G107 in Volts for left side
J Depending on intensity of sunlight penetration 1.9 ...3.2V

Display zone 2 - 750,0

Readout of sunlight penetration photosensor -G107 in Watts per m2 for left side
J Depending on intensity of sunlight penetration 0...1000W

Display zone 3 - 2,20V

Readout of sunlight penetration photosensor -G107 in Volts for right side
J Depending on intensity of sunlight penetration 1.9 ...3.2V

Display zone 4 - 720,0

Readout of sunlight penetration photosensor -G107 in Watts per m2 for right side
J Depending on intensity of sunlight penetration 0...1000W

Measured value block 025

Display zone 1 - ON

Information transmitted by steering column electronics control unit -J527 to terminal 15
J Readout = on - Information terminal 15 on applied (ignition on)
J Readout = off - Information terminal 15 on not applied (ignition off)

Display zone 2 - ON

Information transmitted to terminal 75 (terminal X) by steering column electronics control unit -J527
J Readout = on - Information terminal 75 on applied (ignition on)
J Readout = off - Information terminal 75 on not applied (ignition off)

Display zone 3 - ON

Voltage from terminal 15 at operating and display unit -J255 connected
J Readout = on - (ignition on)
J Readout = off - (ignition off)

Display zone 4 - 13,30V

Measured voltage at terminal 30 in Volts

Measured value block 026

Display zone 1 - 04:00

Time span for time between ignition off and on received from data bus system
J Readout = 00:00....XX:XX h - Time span ignition off (standing time) in hours and minutes

Display zone 2 - 00001

Signal received from data bus system for operating status of windscreen wiper via steering column electronics control unit -J527
J Readout = 00000 - No windscreen wiper or wash/wipe operation active (wiper at home position)
J Readout = 00001 - Windscreen wiper intermittent
J Readout = 00010 - Windscreen wiper stage 1
J Readout = 00100 - Windscreen wiper stage 2
J Readout = 01000 - Windscreen wiper wipe/wash

Display zone 3 - OFF

Activation of seat heating for the left seat by the operating and display unit -J255
J Readout on or off

Display zone 4 - OFF

Activation of seat heating for the right seat by the operating and display unit -J255
J Readout on or off

Measured value block 027
Seat climate control front left

Display zone 1 - 0,0

Level for the seat heating set in the operating and display unit -J255 (0...6)

Display zone 2 - 0,0

Level for the seat ventilation set in the operating and display unit -J255 (0...6)

Display zone 3 - 34,0C

Temperature in °C measured by the front left seat temperature sensor -G344

Display zone 4 - 0,0C

Specified temperature in the front left seat in °C calculated by the operating and display unit -J255 based on the presetting.

Measured value block 028
Seat climate control front right

Display zone 1 - 0,0

Seat heating level (0...6) set in the operating and display unit -J255

Display zone 2 - 0,0

Level for the seat ventilation set in the operating and display unit -J255 (0...6)

Display zone 3 - 33,0C

Temperature in °C measured by the front right seat temperature sensor -G345

Display zone 4 - 0,0C

Specified temperature in the front right seat in °C calculated by the operating and display unit -J255 based on the presetting.

Measured value block 029

Display zone 1 - OFF

Signal to switch on the auxiliary heater received by the data bus system
J Readout Off or On

Display zone 2 - OFF

Signal to switch off the auxiliary heater received by the data bus system
J Readout Off or On

Display zone 3 - OFF

Signal to switch on the fuel powered additional heater (auxiliary heater) transmitted by the operating and display unit -J255 over the data bus system - in diesel vehicles only
J Readout Off or On

Display zone 4 - 11,0

Shut-off condition for the fuel powered additional heater - only for diesel vehicles
J Readout 00 (no shut-off condition in effect)
J Readout 5, 6, 7, 8, 11 or 20 (a shut-off condition in effect, the additional heater is not activated, e.g. with readout 5 engine does not run)

Measured value block 030

Display zone 1 - OFF

J Display zone not used (intended for switch-on signal of a retrofitted auxiliary heater)
J Readout 0 or off (there is no voltage and so no signal at the input)

Display zone 2 - 00

Signal calculated by the operating and display unit -J255 and transmitted as required over the data bus system for auxiliary heating and ventilation
J Readout 00 (auxiliary heating on)
J Readout 01 (auxiliary ventilation sufficient, no auxiliary heating)

Display zone 3 - OFF

Signal received by the data bus system to switch on the fresh air blower -V2 in auxiliary heating mode
J Readout Off or On

Display zone 4 - 0,0s

Maximum remaining permissible on-time of auxiliary heater in seconds calculated by operating and display unit -J255.

Measured value block 031

Display zone 1 - 0,0

Signal received by the data bus system for auxiliary heating/ventilation
J Readout 00 (no switch-on time set in dash panel insert or on MMI)
J Readout 01 (a switch-on time is set in dash panel insert or on MMI)
J Readout 10 (the preset switch-on time in the dash panel insert or on the MMI has already elapsed)

Display zone 2 - 0,0

Signal received by the data bus system to switch on the auxiliary heating/ventilation
J Readout 00 (no signal)
J Readout 01... 05 (ready or switch on auxiliary heating/ventilation)
J Readout 06 (switch off auxiliary heating/ventilation)

Display zone 3 - 0,0

Signal transmitted by the operating and display unit -J255 over the data bus system to regulate the output of the auxiliary heater
J Readout 0 (no signal to reduce the heating power output of the auxiliary heater is received)
J Readout 1 (the coolant temperature is sufficient to attain the specified heating power,
the heating power of the auxiliary heater is reduced by switching from full to partial load operation)

Display zone 4 - 0,0

Signal transmitted by the -J255 over the data bus system to activate the auxiliary ventilation symbol (in the dash panel insert)
J Readout 0 (do not activate symbol)
J Readout 1 (activate symbol)

Measured value block 032

Display zone 1 - 2

Signal received by the data bus system to assign the ignition key
J Readout 0 (the ignition was switched on with a key for which the dash panel insert contains no assignment)
J Readout 1...4 (the ignition was switched on with the key set in the dash panel insert to position 1, 2, 3 or 4)

Display zone 2 - 1

Signal received from the data bus system to assign the driver by fingerprint
- The fingerprint system is an optional extra
J Readout 0 (no assignment made)
J Readout 1....4 (a fingerprint was detected, assigned to position 1, 2, 3 or 4)

Display zone 3 - 1,0

Signal received by the data bus system to assign the ignition key
J Readout 0 (no ignition key is detected, or it is not enabled)
J Readout 1 (an ignition key is detected and it is enabled)

Display zone 4

Currently not used

Measured value block 033

Display zone 1 - 0,0

Last request received by the data bus system to shut off electrical consumers with engine running
J Readout 0 (no request received from the energy management control unit -J644)
J Readout 1...3 (a request was received for complete shut-off of consumers from the energy management control unit -J644, e.g. stage 1 windscreen heating and additional footwell heater, stage 2 seat heating and rear window heating, stage 3 all consumers of stages 1 and 2).
J Readout 5...7 (a request was received to reduce the power output of consumers from the energy management control unit -J644, e.g. stage 5 windscreen heating and additional footwell heater, stage 6 seat heating and rear window heating, stage 7 all consumers of
stages 5 and 6).

Display zone 2 - 0,0

Last but one request received by the data bus system to shut off electrical consumers
J Readout 0 or 1....7 (see display zone 1)

Display zone 3 - 0,0

Last but two request received by the data bus system to shut off electrical consumers
J Readout 0 or 1....7 (see display zone 1)

Display zone 4

Currently not used

Measured value block 034

Display zone 1 - 0,0

Latest request received by the data bus system to shut off electrical consumers with ignition off or on (no-load current shut-off)
J Shut-off stage 0 - no shut-off requested by energy management control unit -J644
J Shut-off stage 1...4 - all heating systems off
J Shut-off stage 5 - auxiliary heating not possible
J Shut-off stage 6 - no wakeup possible

Display zone 2 - 0,0

Latest request received by the data bus system to shut off electrical consumers with engine running
J Readout 0 or 1....7 (see display group 033, display zone 1)

Display zone 3 - 0,0

Last energy balance of the vehicle electrical system received by the data bus system
J Readout 0 (no restriction, but the system is fully loaded)
J Readout 1 ...3 (no restriction, there is still a certain reserve, e.g. approx. 200 Watts
with readout 2)
J Readout 4...7 (the operating and display unit -J255 is requested to save power and reduce the output of specific consumers, e.g. by approx. 400 Watts with readout 4)

Display zone 4 - 1,0

Status of the request received by the data bus system to shut off electrical consumers
J Readout 0 (the control is not active)
J Readout 1 (the control is active)

Measured value block 035

Display zone 1 - 254,0

Status received from the data bus system to activate the heated windscreen -Z2
J Readout 0 (no restriction is received from the energy management control unit -J644 for the activation)
J Readout 254 or 255 (a restriction is received from the energy management control unit -J644, the power output for the heated windscreen is reduced or is shut off)

Display zone 2 - 00000000

Status received from the data bus system to activate the heated seats
J Readout 0000 0000 (no restriction is received from the energy management control unit -J644 for the activation)
J Readout XXXX XXXX (a restriction is received from the energy management control unit -J644, the power output for the seat heating is reduced or the seat heating is shut off, e.g. with readout 0010 0000 the rear left seat heating is completely shut off)

Display zone 3 - 0,0

Number of requests received during the last 3 driving periods from the data bus system to shut off electrical consumers
J Readout 0 (no request received from the energy management control unit -J644)
J Readout 1....XXX (so many requests were received from the energy management control unit -J644)

Display zone 4 - 2,0

Last request received by the data bus system to shut off electrical consumers with ignition off or on (no-load current shut-off)
J Readout 0 (no request received from the energy management control unit -J644)
J Readout 1...6 (a request was received for shut-off of consumers from the energy management control unit -J644, e.g. stage 5 auxiliary heater).

Measured value block 036

Display zone 1 - 2-Wire

Operating status of convenience system data bus
J Readout Two-wire - Convenience system data bus in two-wire mode (normal)
J Readout One-wire - Convenience system data bus in one-wire mode (emergency operation)

Display zone 2

Currently not used

Display zone 3

Currently not used

Display zone 4

Currently not used

Measured value block 037

Display zone 1 - V3.39 D3-Klima-V2.5.3

Version number of network management system - working level of convenience system data bus

Display zone 2

Version of communications matrix in operating and display unit -J255
J Data level of the operating and display unit -J255 at which information is sent on the convenience system data bus and expected from other control units

Display zone 3

Currently not used

Display zone 4

Currently not used

Measured value block 038

Display zone 1 - 46,8%

Information received from the data bus system on air humidity in the vehicle. The air humidity sender -G355 is connected to the roof electronics control unit -J528. The roof electronics control unit -J528 converts the information into data signals and sends it over the data bus system.
J Readout 0...100 percent (this relative air humidity was measured by the air humidity sender -G355 on the windscreen)

Display zone 2 - 41,0C

Reference temperature received from the data bus system (from the roof electronics control unit -J528) to calculate the air humidity in the vehicle in °C
J Temperature value of the sensor built into the humidity sender -G355

Display zone 3 - 556,0

Measured value received from the data bus system (from the roof electronics control unit -J528) to calculate the air humidity in the vehicle
J Raw value, ignore readout at present

Display zone 4 - 168,0

Measured value received from the data bus system (from the roof electronics control unit -J528) to calculate the air humidity in the vehicle in °C
J Raw value, ignore readout at present

Measured value block 039

Display zone 1 - 0000

Information received from the data bus system (from the roof electronics control unit -J528) on the status of the signal from the humidity sender -G355
J Readout 0000 (no fault, the signal can be used)
- As soon as a 1 is displayed at one position there is a fault, the signal cannot be used or only to a limited extent.

Display zone 2 - 43,0C

The windscreen temperature in °C calculated by the operating and display unit -J255

Display zone 3 - 18,0C

The dew point on the windscreen in °C calculated by the operating and display unit -J255
- If the temperature on the windscreen falls below this value, the windscreen may mist up
- If display zone 1 indicates a fault in the signal from the -J528, here -40 °C for example may be displayed

Display zone 4

Currently not used

Measured value block 040

Display zone 1

Currently not used

Display zone 2 - 1,0%

The opening time calculated by the operating and display unit -J255 of the left heat regulation valve -N175 in percent
J Readout 0 percent (valve permanently closed, e.g. with temperature presetting Lo for driver side)

Display zone 3 - 1,0%

The opening time calculated by the operating and display unit -J255 of the right heat regulation valve -N176 in percent
J Readout 0 percent (valve permanently closed, e.g. with temperature presetting Lo for passenger side)

Display zone 4 - OFF

Activation of coolant circulation pump -V50 by the operating and display unit -J255
J Readout Off (the pump is not activated, e.g. with temperature presetting Lo for driver and passenger side)

Measured value block 041

Display zone 1 - -40,0C

The specified temperature in the rear left footwell vent in °C calculated by the operating and display unit -J255
J Only relevant in vehicles with a rear operating and display unit -E265 (optional extra)
J Readout e.g. -40 °C if no activation necessary

Display zone 2 - 0,0C

The temperature in °C measured by the temperature sensor built into the rear left footwell heater element -Z42
J Only relevant in vehicles with a rear operating and display unit -E265 (optional extra)

Display zone 3 - 0,0A

The current to heat the rear left footwell heater element -Z42 in A (Amperes) calculated by the operating and display unit -J255
- Only relevant in vehicles with a rear operating and display unit -E265 (optional extra)

Display zone 4 - 00000000

Activation of rear left footwell heater element -Z42
J Only relevant in vehicles with a rear operating and display unit -E265 (optional extra) J Readout 0000 0000 (no shut-off condition, the heater element can be activated)
- As soon as a 1 is set at a position, no activation of the heater element occurs

Vehicle heating diagnosis, left
- Bit 0: Supply below limit - lower limit not achieved
- Bit 1: Supply above limit - upper limit surpassed
- Bit 2: Temperature sensor defective - electrical fault
- Bit 3: Specified T not attainable - max. heating power
- Bit 4: Vacant
- Bit 5: Output stage defective - electrical fault in circuit
- Bit 6: Overheating - currently not testable
- Bit 7: Internal control unit error - defective

Measured value block 042

Display zone 1 - -40,0C

The specified temperature in the rear right footwell vent -Z43 in °C calculated by the operating and display unit -J255
J Only relevant in vehicles with a rear operating and display unit -E265 (optional extra)
J Readout e.g. -40°C if no activation necessary

Display zone 2 - 29,0C

The temperature in °C measured by the temperature sensor built into the rear right footwell heater element -Z43
J Only fitted in vehicles with a rear operating and display unit -E265 (optional extra)

Display zone 3 - 31,0A

The current to heat the rear right footwell heater element -Z43 in A (Amperes) calculated by the operating and display unit -J255
J Only relevant in vehicles with a rear operating and display unit -E265 (optional extra)

Display zone 4 - 00100000

Activation of rear right footwell heater element -Z43
J Only relevant in vehicles with a rear operating and display unit -E265 (optional extra)
J Readout 0000 0000 (no shut-off condition, the heater element can be activated)
- As soon as a 1 is set at a position, no activation of the heater element occurs

Vehicle heating diagnosis, right
- Bit 0: Supply below limit - lower limit not achieved
- Bit 1: Supply above limit - upper limit surpassed
- Bit 2: Temperature sensor defective - electrical fault
- Bit 3: Specified T not attainable - max. heating power
- Bit 4: Vacant
- Bit 5: Output stage defective - electrical fault in circuit
- Bit 6: Overheating - currently not testable
- Bit 7: Internal control unit error - defective

Measured value block 043

Display zone 1 - 0,0kg

The specified air flow to the rear left footwell vent in kg/h calculated by the operating and display unit -J255
J Readout 0 ...1.0 kg/h
J At 0 °C 1000 l of air weighs around 1.3 kg

Display zone 2 - 0,0kg

The specified air flow to the rear right footwell vent in kg/h calculated by the operating and display unit -J255
J Readout 0 ...1.0 kg/h
J At 0 °C 1000 l of air weighs around 1.3 kg

Display zone 3 - 43,0C

The temperature of the regulator in the fresh air blower control unit -J126 in °C
J At an excessive temperature the fresh air blower -V2 is either shut off or is activated without regulation at the maximum voltage

Display zone 4 - 00000000

Currently not used

Measured value block 044

Display zone 1 - 21,000A

The actual current at the fresh air blower -V2 in A (Amperes) calculated by the operating and display unit -J255
J The current is switched through from the fresh air blower control unit -J126 to the fresh air blower -V2.
J Readout 0...30 A (Amperes)

Display zone 2 - 32767h

The operating time for the fresh air blower -V2 via the solar roof in h (hours) calculated by the operating and display unit -J255
J Only relevant in vehicles with a sun roof with solar cells (optional extra)

Display zone 3 - 12,40V

The actual voltage at the fresh air blower -V2 in V (Volts) calculated by the operating and display unit -J255
J The voltage is transmitted from the fresh air blower control unit -J126 to the operating and display unit -J255.

Display zone 4 - 12,40C

The specified voltage at the fresh air blower -V2 in V (Volts) calculated by the operating and display unit -J255
J The voltage is switched through from the fresh air blower control unit -J126 to the fresh air blower -V2.

Measured value block 045

Display zone 1 - 0,0

The specified power output in W (Watts) to heat the heated windscreen -Z2 calculated by the operating and display unit -J255
J Only relevant in vehicles with a heated windscreen (optional extra)
J The output is regulated by the heated windscreen control unit -J505.

Display zone 2 - 0,0

The actual output calculated by the operating and display unit -J255, based on the signal transmitted by the heated windscreen control unit -J505, to heat the heated windscreen -Z2 in W (Watts)
J Only relevant in vehicles with a heated windscreen (optional extra)
J The output is regulated by the heated windscreen control unit -J505.

Display zone 3 - 0,0A

The current in A (Amperes) drawn from the vehicle electrical system to operate the heated windscreen -Z2.
J Only relevant in vehicles with a heated windscreen (optional extra)

Display zone 4 - 00000000

Activation of heated windscreen -Z2
J Only relevant in vehicles with a heated windscreen (optional extra)
J Readout 0000 0000 (no shut-off condition, the heated windscreen -Z2 can be switched on)
- As soon as a 1 is set at a position, no activation occurs

Windscreen heating diagnosis
- Bit 0: Supply below limit - lower limit not achieved
- Bit 1: Supply above limit - upper limit surpassed
- Bit 2: Overheating - currently not testable
- Bit 3: Window breakage - mechanical fault
- Bit 4: Insulation fault - electrical fault in circuit
- Bit 5: Short to 42V - lower limit not achieved
- Bit 6: Vacant
- Bit 7: Internal control unit error - defective

Measured value block 046

Display zone 1 - 1,5

The smallest resistance value of the heated windscreen -Z2 in Ohms calculated by the operating and display unit -J255
J Only relevant in vehicles with a heated windscreen -Z2 (optional extra)

Display zone 2 - 3,3

The largest resistance value of the heated windscreen -Z2 in Ohms calculated by the operating and display unit -J255
J Only relevant in vehicles with a heated windscreen (optional extra)

Display zone 3 - 2,1

The instantaneous resistance value of the heated windscreen -Z2 in Ohms calculated by the operating and display unit -J255
J Only relevant in vehicles with a heated windscreen -Z2 (optional extra)
J Readout 1.5...2.5 Ohm

Display zone 4

Currently not used

Measured value block 047

Display zone 1 - 2,0

The hardware status transmitted by the blower control unit -J126

Display zone 2 - 4,0

The software status transmitted by the blower control unit -J126

Display zone 3 - 4,0

The hardware status transmitted by the heated windscreen -J505
J Only relevant in vehicles with a heated windscreen -Z2 (optional extra)

Display zone 4 - 2,0

The software status transmitted by the heated windscreen -J505
J Only relevant in vehicles with a heated windscreen (optional extra)

Measured value block 048

Display zone 1 - 0,0

The hardware status transmitted by the rear left footwell heater element -Z42
J Only fitted in vehicles with a rear operating and display unit -E265 (optional extra)

Display zone 2 - 0,0

The software status transmitted by the rear left footwell heater element -Z42
J Only fitted in vehicles with a rear operating and display unit -E265 (optional extra)

Display zone 3 - 4,0

The hardware status transmitted by the rear right footwell heater element -Z43
J Only fitted in vehicles with a rear operating and display unit -E265 (optional extra)

Display zone 4 - 1,0

The software status transmitted by the rear right footwell heater element -Z43
J Only fitted in vehicles with a rear operating and display unit -E265 (optional extra)

Measured value block 049

Display zone 1 - 0,0

Request sent by the operating and display unit -J255 over the data bus system to shut off the rear left heated seat -Z10.
J Only relevant in vehicles with a rear operating and display unit -E265 (optional extra)
J In vehicles without rear operating and display unit -E265 the rear seat heating cannot be switched off by the operating and display unit -J255.
J Readout 0 (no request is sent)
J Readout 1 (the rear operating and display unit -E265 is requested to shut off the seat heating)

Display zone 2 - 0,0

Request sent by the operating and display unit -J255 over the data bus system to shut off the rear right heated seat -Z12.
J Only relevant in vehicles with a rear operating and display unit -E265 (optional extra)
J In vehicles without rear operating and display unit -E265 the rear seat heating cannot be switched off by the operating and display unit -J255.
J Readout 0 (no request is sent)
J Readout 1 (the rear operating and display unit -E265 is requested to shut off the seat heating)

Display zone 3 - 255,0

Specification transmitted by the operating and display unit -J255 over the data bus system for the setting of the rear left vent control motor -V218
J Only fitted in vehicles with a rear operating and display unit -E265 (optional extra)
J The specified and actual values for this control motor are displayed in the measured value block of the rear operating and display unit -E265

Display zone 4 - 255,0

Specification transmitted by the operating and display unit -J255 over the data bus system for the setting of the rear right vent control motor -V219
J Only fitted in vehicles with a rear operating and display unit -E265 (optional extra)
J The specified and actual values for this control motor are displayed in the measure d value block of the rear operating and display unit -E265

Measured value block 050

Display zone 1 - 11111111

Coding 1 of the front operating and display unit -J255
J Coding of the vehicle- specific optional extras

Display zone 2 - 00011000

Coding 2 of the front operating and display unit -J255
J Coding of the country variant and vehicle specification

Display zone 3 - 00000001

Coding 3 of the front operating and display unit -J255
J Coding of the rear seat heating and ventilation

Display zone 4

Currently not used