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Accelerator pedal position sender voltage supply and wiring connections: verification > < Electronic acceleration: operation

Leon Mk2

Accelerator pedal position senders: verification
   
Accelerator pedal position senders: verification
Special tools and workshop equipment required
t  Hand multimeter -V.A.G 1526A- or multimeter -V.A.G 1715-
t  Fault reader -V.A.G 1551- or tester for vehicle systems -V.A.G 1552-
t  cable -V.A.G 1551/3B-
t  Auxiliary measurement tool set -V.A.G 1594A- or -V.A.G 1594C-
t  Verification box (double connector) -V.A.G 1598/22- (identification letters BBX)
t  Verification box (double connector) -V.A.G 1598/31- (identification letters AZL)
t  Current flow diagrams

Functioning
Both accelerator pedal position senders -G79- and -G185- on the accelerator pedal pass the driver's requirements on to the engine control unit independently of one another. Both senders are installed together in a single housing.
Test conditions
l  Battery voltage, 11.5 Volts minimum
Verification process
–  Connect fault reader -V.A.G 1551- (V.A.G 1552). Start engine and select “Address code” 01 to select engine control unit.
   
Display indication:
–  Press the keys 0 and 8 for the function “Read measurement block values”, confirm using the key Q.
  
Rapid data transmission             HELP
Select the function XX
Display indication:
–  Press keys 06 and 2 for “Display group number 62” and confirm entry with Q key.
  
Read measurement block values           
Enter number group values XXX
Indicated on the display
(1…4 = Indication field)
–  Check specification of sender 1 -G79- at idling stop in display zone 3: Specification: 3 … 100 %.
–  Check specification of sender 2 -G185- at idling stop in display zone 4: Specification: 3 … 100 %.
  Note!
The engine control unit calculates the voltage values of the angle sender in percent relative to 5 Volt and displays these as a percentage figure (5 Volt supply voltage equates to 100 %).
–  Operate the accelerator pedal slowly until fully depressed and observe the percentage figures in display zones 3 and 4: Specification: 3 … 100%.
  Note!
The percent figures in display zone 3 and 4 must rise evenly. The tolerance range is not covered completely.
–  Press the key ►.
–  Press keys 0 and 6 for the “End output” function and confirm input with the Q key.
–  Switch ignition off.
If the ideal value is not measured:
–  Check accelerator pedal position sender voltage supply and wiring connections → Chapter.
  
Read measured value block         62  ->
         1         2         3         4

Accelerator pedal position sender voltage supply and wiring connections: verification > < Electronic acceleration: operation