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Direct injection and preheating system with distributor pump > < Knock sensor: testing

Leon Mk2

Ignition/combustion fault finding: testing
Ignition/combustion fault finding: testing
Special tools and workshop equipment required
   
t  Fault reader -V.A.G 1551- or Vehicle systems checker -V.A.G 1552- with Lead -V.A.G 1551/3B-
Test process
–  Connect the -V.A.G 1551- (-V.A.G 1552-) Start the engine and enter “address code” 01 to select the engine control unit. (Fault reader: Connecting and selecting the engine control → Chapter.).
  W00-0459
The display reads:
–  Press 0 and 8 for the function “Read measurement value block” and press Q to confirm the entry.
  
Rapid data transmission             HELP
Select function XX
The display reads:
–  Press 0, 1 and 4 for “Display group number 14” and press Q to confirm the entry.
  
Read measurement value block        HELP
Enter display group number XXX
The display reads: (1 … 4 = display fields)
–  Check the state of ignition fault finding in display field 4.
   Target value: “activated”
–  Check total ignition faults in display field 3.
   Target value: 0
If the target values are reached:
–  Press →.
–  Press 0 and 6 for the function “End data transmission” and press Q to confirm the entry.
–  Switch off the ignition.
If the target values are not reached:
–  Change to display group 15 as follows:
   -V.A.G 1551-: Press 3
   -V.A.G 1552-: Press ↑
  
Read measurement value block    14    ->
         1         2         3         4
The display reads: (1 … 4 = display fields)
–  Check the state of ignition fault finding in display field 4.
   Target value: “activated”
–  In display fields 1 … 3, check ignition faults for cyl. 1 … 3.
   Target value: 0
If the target values are not reached:
–  Press →.
–  Press 0 and 6 for the function “End data transmission” and press Q to confirm the entry.
–  Switch off the ignition → Anchor, Analysis of display group 15 and display field 16.
If the target values are reached:
–  Change to display group 16 as follows:
   -V.A.G 1551-: Press 3
   -V.A.G 1552-: Press ↑
  
Read measurement value block    15    ->
         1         2         3         4
The display reads: (1 and 4 = display fields)
–  Check the state of ignition fault finding in display field 4.
   Target value: “activated”
–  In display field 1, check ignition faults, cyl. 4.
   Target value: 0
–  Press →.
–  Press 0 and 6 for the function “End data transmission” and press Q to confirm the entry.
–  Switch off the ignition.
If the target value is not reached: → Anchor; Analysis of display group 15 and display field 16.
  
Read measurement value block    16    ->
          1                            4

Direct injection and preheating system with distributor pump > < Knock sensor: testing