seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

ABOUT US
Exhaust turbocharger, G-charger > < EPC system: operation

Leon Mk2

Accelerator pedal position senders: checking
Accelerator pedal position senders: checking
Operation
The accelerator position sender -G79- and the accelerator pedal position sender -2- -G185- are located in the accelerator and both send completely independent messages about the driver's decision to the engine control unit. Both senders are located in a housing.
  Note
The engine control unit converts the voltage values of the angle senders in percentages reffering to 5 volts and shows these percentages. (5 Volt supply corresponds to 100%).
Check voltage supply and cables to control unit
–  Remove driver's side stowage compartment → General body repairs; Rep. Gr.68
–  Pull 6-pole connector off accelerator pedal position sender.
–  Switch on ignition.
   
–  Connect multimeter to measure voltage at the following connector contacts.
  E20-10006
6-pin connector, contactMeasure at
1Earth
1Contact 5
2Earth
2Contact 3
Specification: 4.5 V min

–  Switch off ignition.
If the specification is not obtained:
   
–  Connect tester -VAG 1598/31- to control unit cable harness, without connecting engine control unit.
  E01-0168
–  Check wiring between test box and connector for open circuit according to current flow diagram.
  E20-10006
6-pin connector, contactTester -VAG 1598/31-, socket
172
273
336
435
533
634
Specification: 4.5 V min

–  Check wiring for short to battery or earth.
–  Also check cables for short circuits between them.
If no wiring fault is detected:
–  Replace accelerator pedal position sender → Item.
   

Exhaust turbocharger, G-charger > < EPC system: operation