seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

Cleaning rules > < Throttle control unit J338 : cleaning
Safety precautions
Safety precautions
  WARNING
Fuel system is under pressure! Wear safety goggles and appropriate clothing to avoid injury and contact with skin. Before loosening hose connections, wrap a cloth around the connection. Then eliminate the pressure by carefully separating the pipe.
To prevent injuries to persons and/or damage to the fuel injection and ignition system, the following must be noted:
t  For safety reasons the fuse must be removed from the fuse holder before opening the fuel system, otherwise the fuel pump is activated by the door contact switch. Fuse installation → Current flow diagrams, Electrical fault finding and Fitting locations
t  Do not touch or remove the ignition cables with the engine running or idling.
t  The ignition must be switched off before connecting or disconnecting injection or ignition system wiring or tester cables.
  Caution
When doing any repair work, especially in the engine compartment, pay attention to the following due to the cramped conditions:
t  All the various lines (e.g. fuel, hydraulic system, active carbon filter system, coolant, refrigerant, brake fluid and vacuum pipes and hoses) and electrical wiring must be installed in their original positions.
t  To prevent damaging the hoses, ensure that all mobile or hot components are easily accessible.
Note the following if testers and measuring instruments have to be used during a road test:
t  Testers and measuring instruments must always be secured to the rear seat and operated by a 2nd person from this location.
If test and measuring instruments are operated from front passenger's seat and the vehicle is involved in an accident, there is a possibility that the person sitting in this seat may receive serious injuries when the airbag is triggered.
t  If the engine is to be turned at starter speed without starting:
   
–  Remove the 4-pin connectors from the ignition coils -arrows-.
  N28-0263

Cleaning rules > < Throttle control unit J338 : cleaning