Actuators

Logic of naming actuators in VW-group is simple it contains "N" + actuator number. The actuator number is unique. Here you can find fitting location, connectors and some basic information about actuators.

To our mind, actuators information is reference, so there is only simple search by number.

N

Audi R8 42 (2007- )
Audi A8 4E (2002 -)
Audi A6 4F (2005- )
Audi Q7 4L (2007- )
Audi TT 8J (2006- )
Audi A4 8K (2008-)
Audi A3 8P (2003- )
Audi Q5 8R (2009- )
N280_42_87_____1_0906_21_Funktion
N280_42_87_____1_0906_21_pruefen
N280_42_87_____1_0906_21_Sollwerte

Checking AC compressor regulating valve -N280

 

Measured value block 001

Display zone 1:

Control current to activate AC compressor regulating valve -N280- in A (Amperes)

- Current flowing via AC compressor regulating valve -N280-.

- The maximum control current consumption depends on the design of the Climatronic control unit -J255

Display zone 2:

Activation of AC compressor regulating valve -N280 in percent.

Display zone 3:

Display zone currently not used.

Display zone 4:

Pressure in refrigerant circuit in bar.

- Measured value of refrigerant pressure/temperature sender -G395.

- Data transfer via the LIN bus air conditioner data bus system to the Climatronic control unit -J255.

 

Measured value block 002

Display zone 1:

Current valid compressor shut-off condition.

- If the readout is 0 the compressor is on.

Display zones 2 ... 4: Last, last-but-one and third-last compressor shut-off condition.

 

Breakdown of compressor shut-off conditions in display group 002:

Compressor off if:

J Readout = "1"

Pressure in refrigerant circuit has been or is too high

J Readout = "2"

Basic setting not executed

J Readout = "3"

Pressure in refrigerant circuit too low

J Readout = "4"

Engine on for less than 2 sec

J Readout = "5"

Engine speed below 200 rpm or 500 rpm

J Readout = "6"

The compressor has been switched off by the "Econ" function (AC-OFF)

J Readout = "7"

The compressor has been switched off by the "OFF" function

J Readout = "8"

The measured ambient temperature was below + 2 °C, is still below + 5 °C and there is no request for recirculated air mode (or below - 2 °C / + 2 ° C if a request for recirculated air mode

has occurred) 

J Readout = "9"

Readout not planned at present

J Readout = "10"

Vehicle voltage below 9.5 V

J Readout "11"

Coolant temperature too high, currently above 118 °C

J Readout = "12"

Load reduction by engine control unit

J Readout = "13"

Pressure sensor defective

J Readout = "14"

Compressor off (on account of fault in data bus system)

J Readout = "15"

pressure in refrigerant circuit is or has been too high more than 30 times

J Readout = "16"

Measured temperature downstream of evaporator has been below 0 °C for over a minute

J Readout = "17"

Measured temperature downstream of evaporator is below -5 °C

J Readout = "18"

Compressor off (no valid measured value for ambient temperature; both ambient temperature sensors -G17 and fresh air intake duct temperature sensor -G89 defective)

J Readout = "19"

Auxiliary heater

J Readout = "20"

Readout not planned at present

J Readout = "21"

Ambient temperature between -8 °C or -5° C and 2 °C or 5 °C but no request for recirculated air

J Readout = "22"

Ambient temperature between -8 °C or -5° C and 2 °C or 5 °C and request for recirculated air, but interior temperature below 8 °C

J Readout = "23"

Radiator fan pre-activation

J Readout = "24"

Compressor shut-off at standstill (not implemented)

J Readout = "25"

Readout not planned at present

J Readout = "26"

Fault memory entry resulting in compressor shut-off

J Readout = "27"

Compressor shut-off via load management, onboard power supply control unit -J519

 




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November 30, 2012
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