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Self diagnosis of Climatronic
Fault table
Note:
The following table lists all the faults, with the corresponding 5 digit code numbers, that can be recognized by the Climatronic control unit-J255-and printed out by the V.A.G 1551.
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◆ If a fault does not occur regularly or if the fault memory is not deleted after elimination of fault, these faults are displayed as sporadic faults.
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◆ Fault codes appear only on print-out.
Fault table may also include type of fault.
When repair has been carried out, the fault memory must always be interrogated again with the fault reader V.A.G 1551 and erased.
If, despite customer's complaint, no fault in Climatronic can be found, carry out "Final control diagnosis" function (
). If necessary, carry out fault finding for specific complaints without self diagnosis:
=> Fault finding, Heating, Air Conditioning - Binder 2
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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No fault recognized
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If "No fault recognized" appears after performing repairs, the self diagnosis is ended.
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00522
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Coolant temperature sender -G62-7)
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Open circuit/short to positive1)
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Open circuit or short circuit in wires or connectors to coolant temperature sender -G62-
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- Check -G62- using "Read measuring value block" => Page 01-41
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Short to earth1)
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-G62- defective
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- Check wires and connectors using current flow diagram
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- Renew -G62-
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1)
One of these read-outs is displayed in addition to relevant component.
7)
Only on vehicles with control unit identification number: 1H0 907 044
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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00281
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Road speed sender -G68-6)
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Speedometer sender -G22- defective (only when speedometer -G21- also malfunctions)
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- Renew -G22-
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Short circuit or open circuit in wires or connectors from junction box for speed signal -TV13- to Climatronic control unit
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- Check signal from -G22- using "Read measuring value block" => Page 01-41
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- Check wires and connectors using current flow diagram
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Cannot be checked at the moment
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This read-out appears only when the final control diagnosis was carried out before interrogation of fault memory and the temperature switch could not be checked (e.g. if ambient temperature was below 12°C). This fault will be erased from control unit fault memory when ignition is switched off.
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6)
A fault has been found with speedometer sender -G22- and not from road speed sender -G68-. The fault is only recognised if 5 driving cycles take place within 4 minutes after starting engine and no speed signal is measured.
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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00532
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Supply voltage
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Signal too large1)
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Alternator defective
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- Check supply voltage using "Read measuring value block"
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Signal too small1)
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Wires or connectors to Climatronic control unit -J255-
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- Check wires and connectors to control unit using current flow diagram
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- Check alternator:
=> Current flow diagrams, Electrical fault finding, Fitting locations
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1)
One of these messages will be displayed in addition to indication of relevant component.
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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00538
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Reference voltage
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Vehicles up to 07.95:
Voltage to earth at -T5/3- or -T28b/7- more than 5.2 V or less than 4.4 V
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Signal too large1)
Signal too small1)
Cont.
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Vehicles from 08.95:
Voltage to earth at -T5/3- or -T28b/14- more than 5.4 V or less than 4.4 Volt
Vehicles up to 07.95:
Short circuit or open circuit in wires or connectors -T5/3- or -T28b/7- on Climatronic control unit -J255-
Vehicles from 08.95:
Short circuit or open circuit in wires or connectors -T5/3- or -T28b/14- on Climatronic control unit -J255-
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Check wires and connectors to control unit using current flow diagram
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1)
One of these messages will be displayed in addition to indication of relevant component.
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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Continuation
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All vehicles
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Central vent positioning motor adjuster -E160- or sunlight penetration photo sensor -G107- or potentiometer -G138- or potentiometer -G92- or potentiometer -G112- or
potentiometer -G113- defective
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- Unplug these component connectors one after another, erase fault memory (=> Page 01-12
). If the "Reference voltage" fault is no longer recognised, the relevant component must be renewed.
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Control unit faulty
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- Replace control unit if necessary
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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00657
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Central vent positioning motor -V102-1)
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Short circuit or open circuit in wires or connectors to central vent positioning motor -V102-
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- Check wires and connectors using current flow diagram
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-V102- defective
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- Perform final control diagnosis => Page 01-35
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- Renew -V102-
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1)
Fault recognized after 30 seconds at earliest.
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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00658
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Control panel
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Short circuit or open circuit in connector to Climatronic control and display unit -E87-
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- Check segments of control and display unit: Carry out final control diagnosis
=> Page 01-35
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-E87- defective
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- Renew -E87-
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Control unit faulty
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- Replace control unit if necessary
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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00766
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Vent temperature sender -G152-8)
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Open circuit/short to positive1)
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Short circuit or open circuit in wires or connectors to vent temperature sender -G152-
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- Check -G152- using "Read measuring value block" => Page 01-41
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Short to earth1)
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-G152- defective
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- Check wires and connectors using current flow diagram
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- Replace -G152-
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1)
One of these read-outs is displayed in addition to relevant component.
8)
Only on vehicles with control unit identification number: 1H0 907 044 A
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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00779
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Ambient temperature sensor -G17-
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Open circuit/short to positive1)
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Short circuit or open circuit in wiring or connectors to ambient temperature sensor -G17-
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- Check -G17- using "Read measuring value block" => Page 01-41
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Short to earth1)
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-G17- defective
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- Check wiring and connectors using current flow diagram
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- Renew -G17-
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1)
One of these messages will be displayed in addition to indication of relevant component.
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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00785
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Instrument panel temperature sensor -G56-
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Open circuit/short to positive1)
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Short circuit or open circuit in wiring or connectors to dash panel temperature sensor -G56-
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- Check -G56- with "Read measuring value block" => Page 01-41
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Short to earth1)
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-G56- defective
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- Check wiring and connectors using current flow diagram
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- Renew -G56-
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1)
One of these messages will be displayed in addition to indication of relevant component.
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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00787
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Fresh air intake duct temperature sensor -G89-
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Open circuit/short to positive1)
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Short circuit or open circuit in wiring or connectors to fresh air intake duct temperature sensor -G89-
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- Check -G89- using "Read measuring value block" => Page 01-41
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Short to earth1)
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-G89- defective
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- Check wiring and connectors using current flow diagram
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- Renew -G89-
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1)
One of these messages will be displayed in addition to indication of relevant component.
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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00791
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Temperature switch for evaporator -E33-3)
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Short circuit or open circuit in wiring or connectors to temperature switch for evaporator -E33-
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- Check -E33- with "Read measuring value block" => Page 01-41
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-E33- defective (only installed in vehicles up to 07.93)
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- Do not replace if -E33- is defective but, bridge connector contacts instead
; Fig. 5
Replacing evaporator temperature switch -E33-
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Could not be checked at the moment
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This read-out appears only when the final control diagnosis was carried out before interrogation of fault memory and the temperature switch could not be checked (e.g. if ambient temperature was below 12°C). This fault will be erased from control unit fault memory when ignition is switched off.
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1)
This fault is not recognized if outside temperature is below 12°C or if -G17- and -G89- both malfunction simultaneously. Required condition for recognition of fault: A/C readiness "On" and -E33- has been opened for at least 10 minutes or no voltage at connector -T28b/2-.
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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00792
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Pressure switch for air conditioner -F129-4)
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Short circuit or open circuit in wiring or connectors to pressure switch for air conditioner -F129-
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- Check -F129- using "Read measuring value block" => Page 01-41
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Refrigerant circuit incorrectly charged or refrigerant insufficiently cooled
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- Check wiring and connectors using current flow diagram
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-F129- defective
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- Renew -F129-
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Cannot be checked at the moment
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This read-out appears only when the final control diagnosis was carried out before interrogation of fault memory and pressure switch could not be checked (e.g. when ambient temperature is below 12°C or -E33- is open). This fault will be erased from control unit fault memory when ignition is switched off.
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1)
This fault cannot be recognized if outside temperature is below 12°C, -E33- is defective, or -G17- and -G89- both malfunction simultaneously.
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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00796
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Temperature sensor blower -V42-
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Dust may be blocking blower air intake
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- Carry out visual check; if necessary, clean -V42-
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Short circuit or open circuit in wiring or connectors to temperature sensor blower -V42-
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- Check wiring and connectors using current flow diagram
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-V42- defective
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- Renew -V42-
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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00797
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Sunlight penetration photo sensor -G107-
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Open circuit/short to positive
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Open circuit or short circuit in wiring or connectors to sunlight penetration photo sensor -G107-
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- Check -G107- using "Read measuring value block" => Page 01-41
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-G107- defective
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- Check wiring and connectors using current flow diagram
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- Renew -G107-
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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01271
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Temperature flap positioning motor -V68-5)
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Short circuit or open circuit in wiring or connectors to temperature flap positioning motor -V68-
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- Check wiring and connectors using current flow diagram
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-V68- incorrectly adjusted
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- Checking and adjusting end position of positioning motor -V68- with motor installed in vehicle => Page 87-127
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-V68- defective
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- Perform final control diagnosis => Page 01-35
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- Renew -V68-
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1)
Fault is recognized after 30 seconds at the earliest.
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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01272
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Central flap positioning motor -V70-1)
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Short circuit or open circuit in wiring or connectors to central flap positioning motor -V70-
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- Check wiring and connectors using current flow diagram
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-V70- defective
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- Perform final control diagnosis => Page 01-35
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- Renew -V70-
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1)
Fault is recognized after 30 seconds at earliest.
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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01273
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Fresh air blower -V2-
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Short circuit or open circuit in wiring or connectors to fresh air blower -V2-
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- Check wiring and connectors using current flow diagram
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- Perform final control diagnosis => Page 01-35
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Blower control unit -J126- defective
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- Renew -J126-
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-V2- defective
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- Renew -V2-
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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01274
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Air flow flap positioning motor -V71-1)
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Short circuit or open circuit in wiring or connectors to air flow flap positioning motor -V71-
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- Check wiring and connectors using current flow diagram
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-V71- defective
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- Perform final control => Page 01-35
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- Renew -V71-
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1)
Fault is recognized after 30 seconds at earliest.
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V.A.G 1551 printout
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Possible cause of fault
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Rectifying fault
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65535
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Control unit defective
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Electrical interference caused by outside sources, poor earth connections or positive connections to control unit -J255-
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- Check wiring and connectors to control unit using current flow diagram
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Central vent positioning motor adjuster -E160- or sunlight penetration photo sensor -G107- or potentiometer -G138- or potentiometer -G92- or potentiometer -G112- or potentiometer -G113- defective
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- Unplug these components connectors one at a time, delete fault memory (=> Page 01-12
). If "Control unit defective" fault is no longer recognized, the relevant component must be renewed.
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Control unit faulty
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- Replace control unit if necessary
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