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Performing self-diagnosis
Fault table
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◆ All the possible faults which are recognised by the automatic gearbox control unit -J217- and displayed on the V.A.G 1551 with the printer switched on when the fault memory is interrogated, are listed below grouped according to the fault code number.
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◆ If faults occur only occasionally or if the fault memory was not erased after rectifying the faults, these faults will be displayed as "sporadic faults" for a stipulated period of time =>Gearbox control unit fault recognition, Page 01-5.
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◆ If components are indicated as being faulty during fault memory interrogation, additionally test wiring to the components for short and open circuits according to current flow diagram =>"Current flow diagrams, Electrical fault finding and Fitting locations" binder, Alhambra 1996 ▸.
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◆ The fault code is printed out in the "rapid data transfer" mode only when the printer of V.A.G 1551 is switched on.
Example: Fault code (5-position) 65535
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Output on printer
V.A.G 1551
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No fault recognised!
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If "No fault recognised" appears after performing repairs, the self-diagnosis is completed.
In the event that the automatic gearbox does not operate properly despite self-diagnosis, carry out repairs as per fault finding programme.
=> "Fault finding, Power transmission" binder, No. 14
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Output on printer
V.A.G 1551
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Possible cause of fault
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Rectifying fault
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00258
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Wiring open or short circuit
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- Check wiring and connections according to CFD2)
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Solenoid valve 1 -N88-
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Solenoid valve 1 -N88- defective
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- Read measured value block ; display group number 004
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Open circuit1)
Short to earth1)
Open circuit/short to earth1)
Short to positive1)
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- Perform electrical check =>from page 01-73
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00260
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Wiring open circuit or short to earth
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- Check wiring and connections according to CFD 2)
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Solenoid valve 2 -N89-
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Solenoid valve 2 -N89- defective
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- Read measured value block ; display group number 004
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Open circuit1)
Short to earth1)
Open circuit/short to earth1)
Short to positive1)
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- Perform electrical check =>from page 01-73
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1) One of these displays appears in addition to relevant component.
2) First check connections for contact corrosion or water ingress and renew if necessary. If solenoid faults are displayed then especially check the 10 pin connector on gearbox between valve body conductor strip and wiring loom.
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Output on printer
V.A.G 1551
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Possible cause of fault
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Rectifying fault
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00262
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Wiring open or short circuit
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- Check wiring and connections according to CFD 2)
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Solenoid valve 3 -N90-
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Solenoid valve 3 -N90- defective
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- Read measured value block ; display group number 004
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Open circuit1)
Short to earth1)
Open circuit/short to earth1)
Short to positive1)
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- Perform electrical check =>from page 01-73
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00264
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Wiring open circuit or short to earth
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- Check wiring and connections according to CFD 2)
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Solenoid valve 4 -N91-
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Solenoid valve 4 -N91- defective
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- Read measured value block ; display group number 004
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Open circuit1)
Short to earth1)
Open circuit/short to earth1)
Short to positive1)
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- Perform electrical check =>from page 01-73
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1) One of these displays appears in addition to relevant component.
2) First check connections for contact corrosion or water ingress and renew if necessary. If solenoid faults are displayed then especially check the 10 pin connector on gearbox between valve body conductor strip and wiring loom.
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Output on printer
V.A.G 1551
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Possible cause of fault
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Rectifying fault
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00266
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Wiring open or short circuit
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- Check wiring and connections according to CFD 2)
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Solenoid valve 5 -N92-
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Solenoid valve 5 -N92- defective
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- Read measured value block ; display group number 004
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Open circuit1)
Short to earth1)
Open circuit/short to earth1)
Short to positive1)
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- Perform electrical check =>from page 01-73
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00268
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Wiring open or short circuit
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- Check wiring and connections according to CFD 2)
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Solenoid valve 6 -N93-
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Solenoid valve 6 -N93- defective
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- Read measured value block ; display group number 002
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Open circuit1)
Short to earth1)
Open circuit/short to earth1)
Short to positive1)
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- Perform electrical check =>from page 01-73
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1) One of these displays appears in addition to relevant component.
2) First check connections for contact corrosion or water ingress and renew if necessary. If solenoid faults are displayed then especially check the 10 pin connector on gearbox between valve body conductor strip and wiring loom.
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Output on printer
V.A.G 1551
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Possible cause of fault
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Rectifying fault
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00270
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Wiring open or short circuit
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- Check wiring and connections according to CFD 2)
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Solenoid valve 7 -N94-
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Solenoid valve 7 -N94- defective
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- Read measured value block ; display group number 004
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Open circuit1)
Short to earth1)
Open circuit/short to earth1)
Short to positive1)
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- Perform electrical check =>from page 01-73
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00281
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Open circuit in wiring
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- Check wiring and connections according to current flow diagram
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Road speed sender -G68-
No signal
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Road speed sender -G68- defective
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- Read measured value block , Fig. 10
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1) One of these displays appears in addition to relevant component.
2) First check connections for contact corrosion or water ingress and renew if necessary. If solenoid faults are displayed then especially check the 10 pin connector on gearbox between valve body conductor strip and wiring loom.
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Output on printer
V.A.G 1551
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Possible cause of fault
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Rectifying fault
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00293
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Wiring open circuit
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- Check wiring and connections according to CFD 1)
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Multifunction switch -F125-
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Multifunction switch -F125- defective
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- Read measured value block ; display group number 001
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Undefined switch state
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- Perform electrical tests =>from page 01-19, Fig. 8
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1) First check connectors for contact corrosion or water ingress and renew if necessary.
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Output on printer
V.A.G 1551
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Possible cause of fault
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Rectifying fault
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00297
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Wiring open circuit
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- Check wiring and connections according to current flow diagram
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Gearbox speed sender
-G38-
No signal1)
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Gearbox speed sender -G38- defective
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- Perform electrical check =>from page 01-20, Fig.9
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Implausible signal1)
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If the control unit recognises an implausible signal, the connectors for gearbox speed sender -G38- and road speed sender -G68- are interchanged
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00300
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Wiring open circuit
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- Check wiring and connections according to CFD 2)
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Gearbox oil temperature sender -G93-1)
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Gearbox oil temperature sender -G93- defective
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- Read measured value block ; display group number 005
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No fault type recognised
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- Perform electrical check =>from page 01-73
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1) A faulty ATF temperature sender is indicated.
2) First check connections for contact corrosion or water ingress and renew if necessary. If solenoid faults are displayed then especially check the 10 pin connector on gearbox between valve body conductor strip and wiring loom.
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Output on printer
V.A.G 1551
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Possible cause of fault
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Rectifying fault
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00518
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Wiring open or short circuit
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- If in addition fault 00638 is displayed, then rectify this first
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- Check wiring and connections according to current flow diagram
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Throttle valve potentiometer -G69-
Signal outside tolerances
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Defective engine control unit or defective throttle valve potentiometer -G69- (in throttle valve control part)
The signal from throttle valve potentiometer -G69- is directed via engine control unit to gearbox control unit
and can only be checked in measured value block.
If a fault is indicated in the throttle valve potentiometer, then also carry out a self-diagnosis on engine control unit.
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- Read measured value block
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Output on printer
V.A.G 1551
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Possible cause of fault
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Rectifying fault
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00529
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Open circuit in wiring
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- Check wiring and connections according to CFD
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Speed information missing
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- Read measured value block =>page
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- Perform electrical check =>from Page 01-73
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00532
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Battery defective
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- Test battery voltage
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Supply voltage
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Insufficient system voltage for valves
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- Read measured value block
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Output on printer
V.A.G 1551
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Possible cause of fault
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Rectifying fault
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00545
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Wiring open circuit or short earth
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- Check wiring and connectors according to current flow diagram
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Engine/gearbox electrical connection
Open circuit1)
Short to earth1)
Open circuit/short to earth1)
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No engine/gearbox control unit connection
The signal for influencing the ignition timing point is not transferred or transferred erroneously between engine and gearbox control unit
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- Read measured value block
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00596
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10 pin connector between valve body conductor strip and wiring loom
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- Check wiring and connections according to CFD
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Short circuit between valve wiring
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Conductor strip to valve body defective
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- Perform electrical check => from page
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1) One of these displays appears in addition to relevant component.
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Output on printer
V.A.G 1551
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Possible cause of fault
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Rectifying fault
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00638
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Wiring open circuit or short to earth
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- Check wiring and connections according to CFD
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Engine/gearbox electrical connection 2
No signal
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No engine/gearbox control unit connection
Throttle valve signal not transferred to gearbox control unit
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- Read measuring value block
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00641
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Gearbox becomes too hot, max. 148°C. If ATF temperature is too high, gearbox shifts down into next lower gear.
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- Check ATF level
=> Repair group 37; Checking ATF level and topping-up01-50; display group number 05; read off ATF temperature
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ATF temperature
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Trailer load of vehicle too high
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- Check wiring and connections according to current flow diagram
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Signal too large1)
No fault recognised1)
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ATF level not in order
Gearbox oil temperature sender (ATF) defective
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- Replace conductor strip
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1) One of these displays appears in addition to relevant component.
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Output on printer
V.A.G 1551
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Possible cause of fault
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Rectifying fault
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00652
Gear monitoring
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Electrical/hydraulic fault
Clutch or valve body defective
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- Read measuring value block ; display group number 04 and establish by driving in which gear the fault occurs
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Implausible signal
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00660
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Open circuit in wiring
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- Check wiring and connections according to CFD
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Kickdown switch/throttle valve potentiometer
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Throttle valve potentiometer -G69- defective
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- Perform repairs as described in "Rectifying fault" 00518 -Throttle valve potentiometer -G69-
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Implausible signal
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Kickdown switch -F8- defective
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- Read measured value block =>page
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Output on printer
V.A.G 1551
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Possible cause of fault
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Rectifying fault
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01192
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Torque converter lock-up clutch
mechanical fault
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Torque converter lock-up clutch slipping
Valve body defective
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- Check torque converter lock-up clutch slip
Read measured value block ; display group number 007
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01236
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Selector lever lock solenoid -N110-
Open circuit/short to earth
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Wiring open circuit or short to earth
Selector lever lock solenoid -N110- defective
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- Read measured value block ; display group number 005
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Output on printer
V.A.G 1551
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Possible cause of fault
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Rectifying fault
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65535
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- Renew control unit
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Control unit defective
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Control unit -J217- defective
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- Bring system into basic setting
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The control unit -J217- should not be renewed until the possible cause of the fault has been determined and the following faults have been rectified:
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◆ mechanical faults
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◆ hydraulic faults
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◆ all affected electrical/electronic components and cable connections.
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