Volkswagen Workshop Service and Repair Manuals

V.A.G 1551 print-out

Possible fault cause

Fault elimination

01242

Control unit output stages

Loose wiring contacts to control elements or Motronic control unit (J220) defective

- Carry out final control diagnosis

Mechanical fault

- Check wiring to control elements for loose contacts.
Renew J220 if necessary
=> Page 24-7 , item 2

V.A.G 1551 print-out

Possible fault cause

Fault elimination

01247

Activated charcoal filter solenoid valve 1 -N80

Short to positive

N80 defective

- Check N80
=> Page 01-52 , final control diagnosis

Wiring or N80 has short to positive

Open circuit/short to earth

N80 defective

Wiring open circuit or short to earth

- Renew N80:
=> Repair group 20; Removing and installing parts of fuel supply system; servicing parts of activated charcoal filter system

Defective

N80 defective

V.A.G 1551 print-out

Possible fault cause

Fault elimination

01249

Injector Cyl. 1 -N30

Short to positive

Wire or N30 has short to positive

- Check injectors
=> Page 01-52 , final control diagnosis

- Check injector wiring => Page 24-79 , checking injectors

Open circuit/short to earth

Wiring open circuit/short to earth

- Check injectors
=> Page 01-52 , final control diagnosis

- Check injector wiring => Page 24-79 , checking injectors

N30 defective

- If necessary replace appropriate injector => Page 24-77 , removing and installing injectors

V.A.G 1551 print-out

Possible fault cause

Fault elimination

01250

Injector Cyl. 2 -N31

Short to positive

- => Injector Cyl. 1,
Fault code 01249

- => Injector Cyl. 1,
Fault code 01249

Open circuit/short to earth

01251

Injector Cyl. 3 -N32

Short to positive

- => Injector Cyl. 1,
Fault code 01249

- => Injector Cyl. 1,
Fault code 01249

Open circuit/short to earth

V.A.G 1551 print-out

Possible fault cause

Fault elimination

01252

Injector Cyl. 4 -N33

Short to positive

- => Injector Cyl. 1,
Fault code 01249

- => Injector Cyl 1,
Fault code 01249

Open circuit/short to earth

01253

Injector Cyl. 5 -N83

Short to positive

- => Injector Cyl. 1,
Fault code 01249

- => Injector Cyl. 1,
Fault code 01249

Open circuit/short to earth

01254

Injector Cyl. 6 -N84

Short to positive

- => Injector Cyl. 1,
Fault code 01249

- => Injector Cyl. 1,
Fault code 01249

Open circuit/short to earth

V.A.G 1551 print-out

Possible fault cause

Fault elimination

01257

Idling speed stabilization valve
-N71

Short circuit to positive in wiring or N71

- Check N71 => Page 01-52 , final control diagnosis

Short circuit to positive

Open circuit/short circuit to earth

Open circuit or short circuit to earth in wiring

N71 defective

- Renew N71 if necessary => Page 24-20 , item 18

V.A.G 1551 print-out

Possible fault cause

Fault elimination

01259

Fuel pump relay -J17

Short to positive

Wire has short to positive

- Locate and eliminate short using current flow diagram:
=> Current flow diagrams, Electrical fault finding and Fitting locations binder

J17 defective

- If necessary replace J17:
=> Current flow diagrams, Electrical fault finding and Fitting locations binder

Open circuit/short to earth

Wiring open circuit/short to earth

- Locate and eliminate short using current flow diagram:
=> Current flow diagrams, Electrical fault finding and Fitting locations binder

V.A.G 1551 print-out

Possible fault cause

Fault elimination

17978

Engine control unit blocked

Attempted manipulation

- Match the engine electronic control unit to the electronic immobilizer

Short in communication wire

- Check electronic immobilizer:
=> Electrical system; Repair group 96;
=> Servicing electronic immobilizer

Incorrect coding

Immobilizer control unit defective/not fitted

65535

Control unit defective

Component in Motronic control unit (J220)

- Renew J220 if necessary => Page 24-7 , item 2