SEAT Workshop Service and Repair Manuals

Special tools, testers, measuring instruments and auxiliary items required

• ◆ Hand multimeter V.A.G 1526
• ◆ Adapter set V.A.G 1594

Test prerequisites:

• ● Battery voltage at least 11.5 V
• ● Ignition switched off
• ● Diesel direct injection system control unit (J248) OK.
  
• ● Glow plug strip fuse (S125) OK.

Test sequence

• ‒ → Pull connector off coolant temperature sender -1-.

Note:

Pulling the connector off sender, simulates engine condition "cold" and when switching the ignition on the relevant glow period is carried out.

• ‒ Pull glow plug connector off glow plug.
• ‒ Connect multimeter to measure voltage between a glow plug connector and vehicle earth.
• ‒ Switch on ignition for approx. 20 seconds
      approx. battery voltage
  must be displayed.
• ‒ If no voltage is present:

=> Current flow diagrams, Electrical fault finding and Fitting locations binder