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Actuator diagnosis > < Self-diagnosis of the vehicle voltage control unit II
Fault table for the vehicle voltage control unit
   
Fault table for the vehicle voltage control unit
  Note
t  All the possible faults which can be detected by the vehicle voltage control unit and can be displayed by -V.A.G 1552 - are listed below according to the 5-digit fault code.
t  Before replacing components found to be defective first check the wiring and plug connections to these components as well as the earth cables according to the current flow diagram.
t  After repair always interrogate the fault memory using vehicle system tester -V.A.G 1552- and erase the memory.
t  All static and sporadic faults are stored in the fault memory. A fault is detected as static if it exists for at least 2 seconds. If the fault is then no longer present, it is stored as a sporadic (temporary) fault. “/SP” appears on the right of the display.
t  After switching on the ignition, all the faults which exist are set to sporadic and are not stored as static faults unless they continue to exist after completing the check.
t  If a sporadic fault no longer occurs during 50 driving cycles (ignition on for at least 5 minutes, road speed > 30 km/h), it is erased.
Readout on - V.A.G 1552-Possible causes of faultPossible effectsRectifying fault
00883 
t  Loose contact
t  Corrosion at plug connections
t  Switch defective
Operating problems
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace switch.
Ignition/starter switch -D (terminal S)Implausible signal
00884 
Ignition/starter switch -D (terminal X)Implausible signal
00885 
Ignition/starter switch -D (terminal 50)Implausible signal
00886 
Turn signal switch -E2Implausible signal
00887 
t  Loose contact
t  Corrosion at plug connections
t  Push-button defective
Operating problems
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace push-button.
Hazard warning light push-button -E229Implausible signal
00888 
t  Loose contact
t  Corrosion at plug connections
t  Switch defective
Operating problems
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace switch.
Intermittent wiper switch -E22Implausible signal
00889 
t  Loose contact
t  Corrosion at plug connections
t  Push-button defective
Operating problems
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace push-button.
Horn plate -HImplausible signal
00890 
Heated rear window push-button -E230Implausible signal
  
00891 
Remote tailgate release push-button -E233Implausible signal
  
00893 
Tailgate release push-button -E234Implausible signal
00895 
t  Loose contact
t  Corrosion at plug connections
t  Switch defective
Operating problems
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace switch.
CCS/AICC operating unit -E45Implausible signal
00896 
t  Loose contact
t  Corrosion at plug connections
t  The tailgate lock is defective
Operating problems
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace tailgate lock.
Tailgate locking unit -F256Implausible signal
00897 
t  Loose contact
t  Corrosion at plug connections
t  Windscreen washer pump defective
Operating problems
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace windscreen washer pump.
Windscreen washer pump -V5Implausible signal
00899  no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace fuse.
Wiper motor fuse -S128defective
t  Loose contact
t  Corrosion at plug connections
t  Fuse No. 41 defective
00900  
Horn/dual tone fuse -S194defective
t  Loose contact
t  Corrosion at plug connections
t  Fuse No. 40 defective
00901 
t  Loose contact/short circuit
t  Corrosion at plug connections
t  Reversing light switch defective
Operating problems
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace reversing light switch.
Reversing lightsImplausible signal
 Short circuit to positive
 
00902 
t  Loose contact
t  Corrosion at plug connections
t  Fuse No. 31 defective
no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace fuse.
Remote tailgate release fuse -S195defective
00903 
t  Loose contact
t  Corrosion at plug connections
t  Fuse No. 38 defective
no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace fuse.
Exterior mirror heater fuse -S196defective
00905 
t  Loose contact
t  Corrosion at plug connections
t  Fuse No. 13 defective
no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace fuse.
Reversing light fuse -S40defective
00906 
t  Short-circuit in cable connection
t  Horn defective
no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace horn.
Horn/dual tone horn -H1Short circuit to positive
 
 
 
 
 
00907 
t  Data bus fault
Poor vehicle handling
–  Perform self-diagnosis of engine control unit → Engine - Fuel Injection; Rep. Gr.01.
Load management intervention 
 
00909 
t  Loose contact
t  Corrosion at plug connections
t  Windscreen wiper motor defective
Operating problems
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace windscreen wiper motor.
Windscreen wiper motor -V (stage 1/2)defective
00920 
t  Loose contact
t  Corrosion at plug connections
t  Short-circuit to positive terminal in the wiring
no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
Heated exterior mirror (24/25)Short circuit to positive
00924 
t  Loose contact
t  Corrosion at plug connections
t  Relay defective
no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace relay.
Headlight cleaning system relay -J39Short circuit to earth
00925 
t  Loose contact
t  Corrosion at plug connections
t  Fuse No. 4 defective
no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace fuse.
Fuse (30) for the interior lights - S261defective
00966  no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace fuse.
Turn signal light fuse -S151defective
t  Loose contact
t  Corrosion at plug connections
t  Fuse No. 44 defective
00969  
Heated rear window fuse -S41defective
t  Loose contact
t  Corrosion at plug connections
t  Fuse No. 39 defective
00971  no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace relay.
Relay for left heated windcreen -J410 (up to 04.02)Short circuit to positive
t  Loose contact
t  Corrosion at plug connections
t  Short-circuit to positive terminal in the wiring
00974  no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace switch.
Switch heated windcreen -E180 (up to 04.02)Short circuit to positive
t  Loose contact
t  Corrosion at plug connections
t  Short-circuit to positive terminal in the wiring
00975 
t  Short-circuit in the wiring to the rear window
no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace rear window.
Heated rear window -Z1Short circuit to positive
00989 
t  Loose contact
t  Corrosion at plug connections
t  Fuse defective
no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace fuse.
Consumer switch-off fuse -S157defective
00991 
t  Short circuit in the wiring
no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
Interior LightsShort circuit to positive
01024 
t  Line interruption
t  Sensor defective
no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace rain sensor -G213.
Rain sensor -G213No signal
  
01044   
–  Code control unit according to table → Chapter.
Control unit wrongly coded 
01054 
t  Loose contact
t  Corrosion at plug connections
t  Short-circuit in the wiring to the interior lights
no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace relay.
Terminal 30 - voltage supply relay -J317Short circuit to positive
01070 
t  Loose contact/short-circuit to earth
t  Corrosion at plug connections
t  Relay defective
no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace relay.
Starter relay -J53Short circuit to earth
01117 
t  Loose contact
t  Corrosion at plug connections
t  AC generator defective
no operation
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace AC generator.
Load signal for alternator terminal DFImplausible signal
01147 
t  Loose contact
t  Corrosion at plug connections
t  Tailgate locking motor defective
Operating problems
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace tailgate locking motor.
Tailgate locking motor -V120 
01236 
t  Loose contact/short-circuit to earth
t  Corrosion at plug connections
t  Solenoid defective
Operating problems
–  Test wiring → Current flow diagrams and Fitting locations.
–  Check connectors.
–  Replace solenoid.
Selector lever lock solenoid -N110Short circuit to earth
01312 
t  Short circuit to positive
t  Short circuit to earth
t  Data BUS defective
t  Poor vehicle handling
t  possibly wrong displays in the dash panel insert
–  Checking the data BUS → Chapter.
Drive databusdefective
01314 
t  Data BUS defective
t  Engine control unit defective
t  Poor vehicle handling
t  possibly wrong displays in the dash panel insert
–  Checking the data BUS → Chapter.
–  Read fault memory of engine control unit. → Engine - Fuel Injection; Rep. Gr.01.
Engine control unitNo communication
01316 
t  Data BUS defective
t  ABS control unit defective
t  Poor vehicle handling
t  possibly wrong displays in the dash panel insert
–  Checking the data BUS → Chapter.
–  Read out the fault memory of the ABS control unit → Running Gear; Rep. Gr.45.
Brake control unitNo communication
01317 
t  Data BUS defective
t  Dash panel insert defective
No setting or incorrect display
–  Checking the data BUS → Chapter.
–  Read out fault memory → Chapter.
Control unit with display in dash panel insert -J285No communication
01320 
t  Data BUS defective
t  Air conditioning system control unit defective
t  Poor vehicle handling
t  Air conditioning system does not operate
–  Checking the data BUS → Chapter.
–  Read out air conditioning system fault memory → Heating, Air conditioning; Rep. Gr.01.
Climatronic control unit -J255No communication
01321 
t  Data BUS defective
t  Airbag control unit defective
t  possibly wrong displays in the dash panel insert
–  Checking the data BUS → Chapter.
–  Read out fault memory of the airbag control unit → Body Work; Rep. Gr.01.
Airbag control unit -J234No communication
01330 
t  Data BUS defective
t  Central locking control unit defective
Central locking does not operate
–  Checking the data BUS → Chapter.
–  Read out fault memory of central locking control unit → Body Work; Rep. Gr.01.
Convenience system central control unit -J393No communication
01598 
t  Battery discharged
t  Battery defective
Engine does not start
–  Charging battery.
–  Check the battery → Chapter.
Vehicle battery voltageSignal too low
65535 
t  Control unit defective
 
–  Replace control unit → Chapter.
Control unit defective 

   

Actuator diagnosis > < Self-diagnosis of the vehicle voltage control unit II