Volkswagen Workshop Service and Repair Manuals

(Fuel pumps are not activated during starting).

Note:

This test for use with Engine Code EG ▸ 7/79 with contact breaker ignition. With this engine, testing should be done with reference to Current Flow Diagram.

• ◆ Fuse OK.
  ▸7/82 Fuse and fuel pump relay -J17-
  8/82 ▸ Fuse No. 5.

• ‒ Press wire clip to remove connector at Hall sender (distributor).
• ‒ Remove fuse boos/relay plate cover.

• ‒ Remove fuel pump relay from position No. 2.
• ‒ Switch on ignition

• ‒ → Using multimeter V.A.G 1526 and wires from V.A.G 1594 measure voltage between following contacts:
• ‒ Between contact 2 and earth (-)
• ‒ Between contact 2 and 1
• ‒ Between contact 4 and 1

•      Specified value: approx. battery voltage

Where indicated, use Current Flow Diagram to find and eliminate open circuit.

• ‒ Connect multimeter between contacts 1 and 5 with attachment wire.
       Specified value: approx. battery voltage.

• ‒ Briefly touch central lead of distributor connector to earth. The voltage indicated should drop briefly.

Voltage drops:

• ‒ Renew fuel pump relay/check Hall sender:

=> Repair Group 28

Voltage does not drops:

• ‒ Check TCI H switch unit:

=> Repair Group 28

Where indicated, use Current Flow Diagram to locate and eliminate fault in wiring:

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