Audi Workshop Service and Repair Manuals > A4 Cabriolet Mk2 > Heating, ventilation, air conditioning system | Auxiliary heater | Self diagnosis, V.A.G Inspection Service | Reading measured value block | Display groups "001” to "005” | Table of auxiliary heater switching signals (status display "2”)

Display groups as of "006” > < Table of auxiliary heater switching signals (status display "1”)

Table of auxiliary heater switching signals (status display “2”)

Display in zone “4” of display group “005”

Code

Significance

Activation signal from auxiliary heating radio controlled receiver -R64-

No activation signal being applied

Activation signal for auxiliary heating/auxiliary ventilation being applied

–	ON button in remote control hand transmitter pressed

Deactivation signal from auxiliary heating radio controlled receiver -R64-

No deactivation signal being applied

Deactivation signal for auxiliary heating/auxiliary ventilation being applied

–	OFF button in remote control hand transmitter pressed

Actuation of operating and display unit, Climatronic control unit -J255- of air conditioner/heater

No actuation of operating and display unit, Climatronic control unit -J255-

–	Auxiliary heater switched off

–	Auxiliary heater switched on and coolant temperature in auxiliary heater less than approx. 30 °C (up to 45 °C depending on version of auxiliary heater control unit -J364-)

Actuation of operating and display unit, Climatronic control unit -J255-

–	Auxiliary heater switched on and coolant temperature in auxiliary heater greater than approx. 30 °C (up to 45 °C depending on version of auxiliary heater control unit -J364-)

Continued in next table

Code

Significance

Continued

Actuation of auxiliary heater as supplementary heater by operating and display unit, Climatronic control unit -J255-

No signal for activation of auxiliary heater as supplementary heater being applied

Signal for activation of auxiliary heater as supplementary heater being applied

–	Actuation only takes place if, at low ambient temperatures, additional heat output is required to attain the set passenger compartment temperature → Air conditioning; Rep. Gr.01 → Heating; Rep. Gr.01

–	Only available at present for vehicles with diesel engine with no electric supplementary heater → Air conditioning; Rep. Gr.01 → Heating; Rep. Gr.01

–	On vehicles with petrol engine, the auxiliary heater is only activated as supplementary heater if this has been set by way of the “Adaption” function → Chapter

Continued in next table

Code

Significance

Continued

Power saving mode in control unit in dash panel insert -J285-

No power saving message being transmitted by control unit on convenience data bus system

–	The auxiliary heater can be switched on and off by way of remote control

Request for power saving being transmitted by control unit on convenience data bus system (intended as transportation mode prior to delivery to customer)

–	The auxiliary heater cannot be switched on and off by way of remote control (or only to a limited extent)

–	Perform adaption in control unit in dash panel insert -J285- and deactivate “Power saving” function. → Electrical system; Rep. Gr.01 and → "Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051.

Heating, ventilation, air conditioning system
Auxiliary heater / Self diagnosis, V.A.G Inspection Service
Reading measured value block / splay_groups_quot;001_to_quot;005/">Display groups "001” to "005”
Table of auxiliary heater switching signals (status display "2”)

Display groups as of "006” > < Table of auxiliary heater switching signals (status display "1”)

Audi Workshop Service and Repair Manuals

A4 Cabriolet Mk2

Heating, ventilation, air conditioning system Auxiliary heater / Self diagnosis, V.A.G Inspection Service Reading measured value block / splay_groups_quot;001_to_quot;005/">Display groups "001” to "005” Table of auxiliary heater switching signals (status display "2”)

Heating, ventilation, air conditioning system Auxiliary heater / Self diagnosis, V.A.G Inspection Service Reading measured value block / splay_groups_quot;001_to_quot;005/">Display groups "001” to "005” Table of auxiliary heater switching signals (status display "2”)

Heating, ventilation, air conditioning system
Auxiliary heater / Self diagnosis, V.A.G Inspection Service
Reading measured value block / splay_groups_quot;001_to_quot;005/">Display groups "001” to "005”
Table of auxiliary heater switching signals (status display "2”)

Heating, ventilation, air conditioning system
Auxiliary heater / Self diagnosis, V.A.G Inspection Service
Reading measured value block / splay_groups_quot;001_to_quot;005/">Display groups "001” to "005”
Table of auxiliary heater switching signals (status display "2”)