1.2 TDI CR engine (EA189) · Glow plug system · Glow plug system

Checking glow plug system

  • The glow plug system is controlled by means of an automatic glow period control unit - J179- The automatic glow period control unit - J179- is capable of self-diagnosis.
  • Control unit for glow plug system is located in mounting for fuse holder B - SB- on front left in engine compartment ⇒ Current flow diagrams, Electrical fault finding and Fitting locations.
  • An entry is made in the event memory in the engine control unit - J623- if a fault occurs in the glow plug system.
  • The procedure for checking the glow plug system is described in “guided fault finding”.
  • For faster starting, the vehicle is equipped with electronically controlled glow plugs and a separate glow period control unit.
  • Each glow plug is activated and diagnosed individually.