Self-diagnosis of airbag system BTU (Basic Triggering Unit) with and without side airbag
Fault table for BTU airbag system
Notes:
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◆ The following table lists all the faults, with the corresponding 5 digit code numbers, that can be detected by the airbag control unit -J234 and printed out by the V.A.G 1551. Fault codes appear only on print-out.
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◆ If a fault is continually present the fault lamp for the airbag system lights up until the fault is rectified and the fault memory is erased.
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◆ If a fault occurs only occasionally or if the fault memory is not erased after the fault remedy has been carried out, the fault will appear on the display as a "sporadically occurring fault" (SP). On the right side of the display of the V.A.G 1551 a "/SP" appears and the fault light remains on.
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◆ If defective components were detected also check wiring to the components for short and open circuits in line with the current flow diagram.
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◆ The 3-digit fault type number appearing next to the fault code is a data code which can be ignored.
V.A.G 1551 print-out
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Possible causes of fault
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Fault remedy
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00532
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Voltage supply too low
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- Battery discharged/defective - Short-circuit in vehicle electrical system
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- Charge/replace battery. Rectify short circuit in electrical system
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00588
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Igniter for airbag, driver's side -N95 resistance value too high
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- Open circuit - Coil spring defective - Driver's airbag unit defective - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Test coil spring Replace airbag unit, driver's side Replace control unit for airbag -J234.
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00588
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Igniter for airbag, driver's side -N95 resistance value too low
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- Short circuit - Coil spring defective - Driver's airbag unit defective - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Test coil spring Replace airbag unit, driver's side Replace control unit for airbag -J234.
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V.A.G 1551 print-out
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Possible causes of fault
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Fault remedy
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00588
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Igniter for airbag, driver's side -N95 short to positive
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- Wiring damaged. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace control unit for airbag -J234.
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00588
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Igniter for airbag, driver's side -N95 short to earth
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- Wiring damaged. - Driver's airbag unit defective - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace airbag unit, driver's side Replace control unit for airbag -J234.
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00589
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Igniter 1 for airbag, passenger's side -N131 resistance value too low
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- Short circuit - Side airbag unit, passenger's side defective - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace airbag unit, passenger's side Replace control unit for airbag -J234.
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V.A.G 1551 print-out
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Possible causes of fault
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Fault remedy
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00589
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Igniter 1 for airbag, passenger's side -N131 resistance value too high
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- Open circuit - Side airbag unit, passenger's side defective - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace airbag unit, passenger's side Replace control unit for airbag -J234.
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00589
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Igniter 1 for airbag, passenger's side -N131 short to positive
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- Wiring damaged. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace control unit for airbag -J234.
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00589
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Igniter 1 for airbag, passenger's side -N131 short to earth
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- Wiring damaged. - Side airbag unit, passenger's side defective - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace airbag unit, passenger's side Replace control unit for airbag -J234.
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00594
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Airbag ignition circuits; Short to positive
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- Wiring damaged - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace control unit for airbag -J234.
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V.A.G 1551 print-out
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Possible causes of fault
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Fault remedy
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00594
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Airbag ignition circuits; Short to earth
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- Wiring damaged. - Coil spring defective - Airbag, driver's side defective - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Testing coil spring Replace airbag unit, driver's side Replace control unit for airbag -J234.
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00595
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Crash data stored
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- Head-on collision - Side impact
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- Replace control unit, airbag unit, belt tensioner unit and any damaged components.
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00654
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Igniter for belt tensioner, driver's side -N152 resistance value too high
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- Open circuit - Open connection in wiring to driver belt tensioner - Belt tensioner igniter defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Close connection. Replace belt tensioner, driver's side Replace control unit for airbag -J234.
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V.A.G 1551 print-out
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Possible causes of fault
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Fault remedy
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00654
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Igniter for belt tensioner, driver's side -N153 resistance value too low
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- Short circuit - Igniter for belt tensioner, driver's side defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace belt tensioner, driver's side Replace control unit for airbag -J234.
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00654
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Igniter for belt tensioner, driver's side -N153 short to positive
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- Wiring damaged. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace control unit for airbag -J234.
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00654
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Igniter for belt tensioner, driver's side -N153 short to earth
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- Wiring damaged. - Igniter for belt tensioner, driver's side defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace belt tensioner, driver's side Replace control unit for airbag -J234.
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V.A.G 1551 print-out
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Possible causes of fault
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Fault remedy
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00655
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Igniter for belt tensioner, passenger's side -N154 resistance value too high
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- Open circuit - Open connection in line to belt tensioner, passenger's side. - Belt tensioner igniter defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Close connection. Replace belt tensioner, passenger's side. Replace control unit for airbag -J234.
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00655
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Igniter for belt tensioner, passenger's side -N154 resistance value too low
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- Short circuit - Igniter for belt tensioner, passenger's side defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace belt tensioner, passenger's side. Replace control unit for airbag -J234.
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00655
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Igniter for belt tensioner, passenger's side -N154 short circuit to positive terminal
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- Wiring damaged. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace control unit for airbag -J234.
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V.A.G 1551 print-out
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Possible causes of fault
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Fault remedy
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00655
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Igniter for belt tensioner, passenger's side -N154 short circuit to earth
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- Wiring damaged. - Igniter for belt tensioner, passenger's side defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace belt tensioner, passenger's side. Replace control unit for airbag -J234.
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01044
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Control unit incorrectly encoded
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- Control unit not coded according to vehicle configuration.
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- Encode control unit for airbag -J234 accordingly.
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Vehicles 1998 ä only:
V.A.G 1551 print-out
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Possible causes of fault
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Fault remedy
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01211
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Igniter for belt tensioner behind driver's seat -N196 resistance value too high
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- Wiring damaged. - Igniter for belt tensioner -N196 defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace igniter for belt tensioner -N196. Replace control unit for airbag -J234.
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01211
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Igniter for belt tensioner behind driver's seat -N196 resistance value too low
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- Wiring damaged. - Igniter for belt tensioner -N196 defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace igniter for belt tensioner -N196. Replace control unit for airbag -J234.
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01211
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Igniter for belt tensioner behind driver's seat -N196 short circuit to positive terminal
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- Wiring damaged. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace control unit for airbag -J234.
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V.A.G 1551 print-out
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Possible causes of fault
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Fault remedy
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01211
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Igniter for belt tensioner behind driver's seat -N196 short circuit to earth
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- Wiring damaged. - Igniter for belt tensioner -N196 defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace igniter for belt tensioner -N196. Replace control unit for airbag -J234.
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01211
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Igniter for belt tensioner behind driver's seat -N196 open circuit
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- Wiring damaged. - Igniter for belt tensioner -N196 defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace igniter for belt tensioner -N196. Replace control unit for airbag -J234.
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01212
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Igniter for belt tensioner behind passenger's seat -N197 resistance value too high
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- Wiring damaged. - Igniter for belt tensioner -N197 defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace igniter for belt tensioner -N197. Replace control unit for airbag -J234.
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V.A.G 1551 print-out
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Possible causes of fault
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Fault remedy
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01212
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Igniter for belt tensioner behind passenger's seat -N197 resistance value too low
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- Wiring damaged. - Igniter for belt tensioner -N197 defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace igniter for belt tensioner -N197. Replace control unit for airbag -J234.
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01212
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Igniter for belt tensioner behind passenger's seat -N197 short circuit to positive circuit
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- Wiring damaged. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace control unit for airbag -J234.
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01212
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Igniter for belt tensioner behind passenger's seat -N197 short circuit to earth
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- Wiring damaged. - Igniter for belt tensioner -N197 defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace igniter for belt tensioner -N197. Replace control unit for airbag -J234.
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V.A.G 1551 print-out
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Possible causes of fault
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Fault remedy
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01212
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Igniter for belt tensioner behind passenger's seat -N197 open circuit
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- Wiring damaged. - Igniter for belt tensioner -N197 defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace igniter for belt tensioner -N197. Replace control unit for airbag -J234.
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01217
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Igniter for side airbag, driver's side -N199 resistance value too high
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- Open circuit - Side airbag unit, driver's side defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace side airbag driver's side. Replace control unit for airbag -J234.
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01217
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Igniter for side airbag, driver's side -N199 resistance value too low
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- Short circuit - Side airbag unit, driver's side defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace side airbag driver's side. Replace control unit for airbag -J234.
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V.A.G 1551 print-out
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Possible causes of fault
|
Fault remedy
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01217
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Igniter for side airbag, driver's side -N199 short to positive
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- Wiring damaged. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace control unit for airbag -J234.
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01217
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|
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Igniter for side airbag, driver's side -N199 short to earth
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- Wiring damaged. - Side airbag unit, driver's side defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace side airbag driver's side. Replace control unit for airbag -J234.
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01218
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|
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Igniter for passenger's side airbag -N200 resistance value too high
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- Open circuit - Side airbag unit, passenger's side defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace airbag unit, passenger's side. Replace control unit for airbag -J234.
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V.A.G 1551 print-out
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Possible causes of fault
|
Fault remedy
|
01218
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Igniter for passenger's side airbag -N200 resistance value too low
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- Short circuit - Side airbag unit, passenger's side defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace airbag unit, passenger's side. Replace control unit for airbag -J234.
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01218
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|
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Igniter for passenger's side airbag -N200 short circuit to positive terminal
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- Wiring damaged. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace control unit for airbag -J234.
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01218
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|
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Igniter for passenger's side airbag -N200 short circuit to earth
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- Wiring damaged. - Side airbag unit, passenger's side defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace airbag unit, passenger's side. Replace control unit for airbag -J234.
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V.A.G 1551 print-out
|
Possible causes of fault
|
Fault remedy
|
01221
|
|
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Crash sensor for driver's side airbag (lateral acceleration sensor) -G179 open circuit
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- Open circuit - Connector in wiring to crash sensor driver's side is open. - Crash sensor defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Close connection. Replace crash sensor -G179. Replace control unit for airbag -J234.
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01221
|
|
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Crash sensor for driver's side airbag (lateral acceleration sensor) -G179 short circuit
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- Short in wiring to positive or earth. - Crash sensor defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace crash sensor -G179. Replace control unit for airbag -J234.
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01221
|
|
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Crash sensor for driver's side airbag (lateral acceleration sensor) -G179 not authorised.
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- Control unit for airbag -J234 wrongly encoded. - Control unit and crash sensor do not match.
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- Replace control unit for airbag -J234. Replace crash sensor -G179.
|
V.A.G 1551 print-out
|
Possible causes of fault
|
Fault remedy
|
01222
|
|
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Crash sensor, passenger's side airbag (lateral acceleration sensor) -G180 open circuit
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- Open circuit - Connector in wiring to crash sensor passenger's side is open. - Crash sensor defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Close connection. Replace crash sensor -G180. Replace control unit for airbag -J234.
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01222
|
|
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Crash sensor, passenger's side airbag (lateral acceleration sensor) -G180 short circuit
|
- Short in wiring to positive or earth. - Crash sensor defective. - Control unit for airbag -J234 defective.
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- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace crash sensor -G180. Replace control unit for airbag -J234.
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01222
|
|
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Crash sensor, passenger's side airbag (lateral acceleration sensor) -G180 not authorised
|
- Control unit for airbag -J234 wrongly encoded. - Control unit and crash sensor do not match.
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- Replace control unit for airbag -J234. Replace crash sensor -G180.
|
All vehicles:
V.A.G 1551 print-out
|
Possible causes of fault
|
Fault remedy
|
01223
|
|
|
Signal: Open central locking system
|
- Control unit for airbag -J234 defective.
|
- Replace control unit for airbag -J234.
|
01228
|
|
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Key sw. Switch off airbag, BTU -E224. Open circuit. Short to positive
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- Open circuit - Key switch -E224 defective. - Control unit for airbag -J234 defective.
|
- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace key switch -E224. Replace control unit for airbag -J234.
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01228
|
|
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Key sw. Switch off airbag, BTU -E224. Short to earth
|
- Wiring damaged. - Key switch -E224 defective. - Control unit for airbag -J234 defective.
|
- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace key switch -E224. Replace control unit for airbag -J234.
|
V.A.G 1551 print-out
|
Possible causes of fault
|
Fault remedy
|
01280 1)
|
|
|
Passenger airbag deactivated
|
- Passenger's airbag has been deactivated via adaption.
|
- Adapt control unit for airbag -J234 accordingly.
|
01578
|
|
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Warning lamp for passenger's airbag -K 145 short circuit to positive terminal
|
- Wiring damaged. - Control unit for airbag -J234 defective.
|
- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace control unit for airbag -J234.
|
01578
|
|
|
Warning lamp for passenger's airbag -K 145 open circuit / short circuit to earth
|
- Wiring damaged. - Warning lamp for passenger airbag -K145 defective - Control unit for airbag -J234 defective.
|
- Fault finding according to current flow diagram => Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder Replace warning lamp for passenger airbag Replace control unit for airbag -J234.
|
01588
|
|
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Head airbag igniter, driver's side -N251 Resistance value too high
|
- Open circuit - Head airbag driver's side defective. - Airbag control unit defective.
|
- Rectify open circuit in wiring Replace head airbag unit (driver's side). Replace airbag control unit.
|
1) Only airbag 7 (07.96 ä) and airbag 8. Fault message is only stored with appropriate adaption "passenger's airbag blocked".
V.A.G 1551 print-out
|
Possible causes of fault
|
Fault remedy
|
01588
|
|
|
Head airbag igniter, driver's side -N251 Resistance value too low
|
- Short circuit - Head airbag driver's side defective. - Airbag control unit defective.
|
- Rectify short circuit. Replace head airbag unit (driver's side). Replace airbag control unit.
|
01588
|
|
|
Head airbag igniter, driver's side -N251 Short circuit to positive
|
- Wiring damaged. - Airbag control unit defective.
|
- Rectify wiring damage Replace airbag control unit.
|
01588
|
|
|
Head airbag igniter, driver's side -N251 Short circuit to earth
|
- Wiring damaged. - Head airbag driver's side defective. - Airbag control unit defective.
|
- Rectify wiring damage Replace head airbag unit (driver's side). Replace airbag control unit.
|
01589
|
|
|
Head airbag igniter, passenger's side -N252 Resistance value too high
|
- Open circuit - Head airbag unit (passenger's side) defective. - Airbag control unit defective.
|
- Rectify open circuit in wiring Replace head airbag unit (passenger's side). Replace airbag control unit.
|
V.A.G 1551 print-out
|
Possible causes of fault
|
Fault remedy
|
01589
|
|
|
Head airbag igniter, passenger's side -N252 Resistance value too low
|
- Short circuit - Head airbag unit (passenger's side) defective. - Airbag control unit defective.
|
- Rectify short circuit. Replace head airbag unit (passenger's side). Replace airbag control unit.
|
01589
|
|
|
Head airbag igniter, passenger's side -N252 Short circuit to positive
|
- Wiring damaged. - Airbag control unit defective.
|
- Rectify wiring damage Replace airbag control unit.
|
01589
|
|
|
Head airbag igniter, passenger's side -N252 Short circuit to earth
|
- Wiring damaged. - Head airbag unit (passenger's side) defective. - Airbag control unit defective.
|
- Rectify wiring damage Replace head airbag unit (passenger's side). Replace airbag control unit.
|
65535 1)
|
|
|
Control unit defective
|
|
- Replace control unit for airbag -J234.
|
1) Fault message appears even when control unit has been triggered three times.
Note:
The fault "65535 Control unit defective" cannot be erased with fault reader V.A.G 1551!
|