SEAT Workshop Service and Repair Manuals

Fault table

t	There follows the list of all possible faults detected by the Autoclima control unit -J255-, which are printed in the -V.A.G 1551-, ordered according to the 5 digit fault codes.

t	If the faults occur only from time to time, these faults are indicated as “sporadic faults” (“SP”).

t	The fault code only appears on the printout.

t	The fault type may also appear on the fault table.

t	After the repair, the fault memory of the fault reader -V.A.G 1551- must always be cleared and consulted once more.

t

If, despite a claim made by the Autoclima, no fault is detected, the function “activator diagnosis 03” ( → Chapter) must be carried out, as well as the function “read measurement value block 08” ( → Chapter). If the display should blink, even though no fault has been detected, the functions must both be carried out, one after the other. If necessary, a fault localisation will have to be undertaken ⇒ Fault localisation Heating, air conditioning.

Printout in -V.A.G 1551- printer	Possible cause of the fault	Fault elimination
00000 No fault detected	If after carrying out the repair “No fault detected” appears, the self-diagnosis is at an end. If the display continues to blink, the following functions must be performed one after the other: 04 Begin basic adjustment → Chapter
00532 Supply voltage Signal too small / SP → Note	Alternator faulty Cables or connectors to the Autoclima control unit -J255-	Check the supply voltage (voltage on terminal 15) by “read measurement value block 08” → Chapter Check the alternator: → Current flow diagrams, Electrical fault finding and Fitting locations –  Check the supply voltage (voltage on terminal 15) by “read measurement value block 08” → Anchor –  Check the cables and connectors against the current circuit diagram –  Check the alternator: → Current flow diagrams, Electrical fault finding and Fitting locations

1)	One of the following indication is also added to the corresponding part.

Printout in -V.A.G 1551- printer	Possible cause of the fault	Fault elimination
00600 Potentiometer -G92- in the servomotor -V68- (for temperature sensor) → Note –  Short-circuit against ground /SP. –  Interruption short-circuit against positive /SP. –  Self-adaptation limit exceeded → Note	–  Short-circuit, cable breakage or error in the contacts of the connectors between -G92- and -J225-. –  Temperature sensor moving with difficulty. –  Potentiometer -G92- in -V68-, faulty.	–  Locate and eliminate the short-circuit, the cable breakage or the error in the contacts of the connectors, by following the current circuit diagram. –  Check the freedom of movement of the temperature sensor → Note. –  Replace the servomotor -V68-.

2)	If there is a fault in the potentiometer -G92-, by pressing the keys “+” or “-” to pre-select the temperature, the servomotor may be adjusted manually -V68- (indication margin between 0º C and 50º C).

3)	This fault is only detected during basic adjustment.

4)	Both final limits must be reached.

Printout in -V.A.G 1551- printer	Possible cause of the fault	Fault elimination
00625 Speed signal. –  Signal mot plausible /SP.	–  Loose contact in the wiring between the speed transmitter -G68-, the instrument panel or other component also connected to the signal (e.g. Autorradio or control unit for GRA) of the -E87-. –  The tachometer -G21- or the instrument panel supplies a useless signal or one of the components connected destroys the signal.	–  Locate and eliminate the loose connection following the current circuit diagram. –  Check the speed signal of the transmitter -G21- or the instrument panel (check all the components connected to this data transmission line). → Electrical system; Rep. Gr.90
00716 Servomotor for circulating air flap -V113- → Note	Short circuit or breakage in the cables or connectors to the servomotor for the circulating air flap -V113- -V113- blocked -V113- faulty	–  Check -V113- by “read measurement value block” → Chapter –  Check cables and connectors along the current circuit diagram –  Carry out activator diagnosis 03 → Anchor –  Replace -V113- and begin function 04 “Basic adjustment”.

5)	This fault is detected during basic adjustment 04, activator diagnosis 03 and in normal working. Both end limits should be reached.

Printout in -V.A.G 1551- printer	Possible cause of the fault	Fault elimination
00779 External temperature sensor -G17- Interruption/short circuit to positive → Note Short circuit to ground → Note	Short circuit to positive or break in the cable or connectors of the external temperature sensor -G17- Short circuit to ground in cables or connectors to the external temperature sensor -G17-. -G17- faulty	–  Check -G17- by “read measurement value block” → Chapter –  Check cables and connectors following the current circuit diagrams –  Check -G17- by “read measurement value block” → Chapter –  Check cables and connectors following the current circuit diagrams –  Replace -G17-

6)	One of these indications appears in addition to the corresponding part.

Printout in -V.A.G 1551- printer	Possible cause of the fault	Fault elimination
00785 Control panel thermosensor -G56-. –  Short circuit against ground /SP. –  Interruption, short circuit against positive /SP.	–  Short circuit or cable break between -G56- and -J255-. –  Thermosensor -G56-, faulty.	–  Locate and eliminate the short circuit or the break in the cables following the current circuit diagram. –  Check the thermosensor -G56- (electrical verification, → Anchor)
00792 Pressure gauge for the air conditioner -F129-. –  Short circuit to ground /SP.	–  Brake in the wiring connection between -F129- and -E87-. –  Fault in the activation of the fan for the cooling fluid -V7- (step 1). –  Dirty condenser or radiator. –  Fault in the activation of the fan for the cooling fluid -V7- (step 2) of the pressure gauge -F129-. –  Pressure gauge -F129-, faulty. –  Fault in the cooling agent circuit (overload or depression).	–  Locate and eliminate the short circuit or the loose contact following the current circuit diagram. –  Check the activation of the fan -V7- (step 1) : activator diagnosis, → Chapter electrical verification, → Anchor. –  Clean the condenser and the radiator. –  Check the activation of the fan for the cooling fluid -V7- (step 2, by means of pressure gauge -F129-), and the control unit for the cooling fluid fan -J293-. –  Check the pressure gauge -F129- ( → Chapter).

The pressure gauge -F129- is composed of two control elements:

–	By means of contacts 1 and 2, the compressor will be disconnected if there is depression or overload in the cooling agent circuit the switch opens the passage).

–	By means of contacts 3 and 4 the fan for the cooling fluid is connected to the 2nd step (the switch closes the passage).

Printout in -V.A.G 1551- printer	Possible cause of the fault	Fault elimination
00796 Ventilator for the thermal probe of the instrument panel -V42-. –  Blockage or lack of voltage /SP.	–  Break in the voltage supply to -V42- or in the wiring between -V42- and -E87-. –  Blower -V42-, faulty.	–  Locate and eliminate the break in the wiring following the current circuit diagram. –  Replace blower -V42-.
01271 Servomotor for the temperature flap -V68- → Note	Short circuit of break in the wiring or connectors to the servomotor for the temperature flap -V68- The -V68- has been fitted without carrying out the function “04 Begin basic adjustment”. -V68- blocked -V68- faulty	–  Check -V68- by “read measurement value block” → Chapter –  Check cables and connectors along the current circuit diagram –  Check the final position of the servomotor -V68-, once fitted → Anchor –  Carry out diagnosis of the activators 03 → Chapter –  Replace -V68- and commence function 04 “basic adjustment”.

7)	This fault is detected during basic adjustment 04; the activator diagnosis 03 and in normal working. Both final limits should be reached.

Printout in -V.A.G 1551- printer	Possible cause of the fault	Fault elimination
01273 Cool air fan -V2- or control unit for the cool air fan -J126-	Short circuit or break in cables or connectors to the cool air ventilator -V2- Control unit for fan -J126- or cool air ventilator -V2- faulty	–  Check -V2- by “read measurement value block” → Chapter –  Check cables and connections along the current circuit diagrams –  Carry out activator diagnosis 03 → Chapter –  Replace -J126- ó -V2-
01296 Temperature transmitter in central diffuser -G191- Break / short circuit to positive Short circuit to ground	There is no transmitter for the central temperature diffuser -G191-	–  Then select the following function: 04 Begin basic adjustment → Chapter
01297 Temperature transmitter of the footrest area diffuser -G192- Break / short circuit to positive Short circuit to ground	Short circuit to ground or break in the cables or connectors to the temperature transmitter of the footrest area diffusers -G192- Short circuit to ground or break in the cables or connectors to the temperature transmitter of the footrest area diffusers -G192- -G192- defective	–  Check the -G192- by “read measurement value block” → Chapter –  Check the cables and connector along the current circuit diagrams. –  Check the -G192- by “read measurement value block” → Anchor –  Check the cables and connector along the current circuit diagrams. –  Replace -G192-
65535 Control unit -J255-	Cables or connectors to the control unit for Autoclima -J255- Control unit for Autoclima defective	–  Check the cables and connector along the current circuit diagrams. –  Check the control unit for Autoclima -J255- by “read measurement value block” → Chapter Replace the control unit for Autoclima -J255-. The select the following function: 04 Begin basic adjustment → Chapter