Volkswagen Golf Mk1 Workshop Service and Repair Manuals

Special tools, testers and auxiliary items

• ◆ Test box V.A.G 1598/18
• ◆ Hand multimeter V.A.G 1526 or multimeter V.A.G 1715
• ◆ Adapter set V.A.G 1594
• ◆ Current flow diagram

Test conditions

• ● Sender fault is recognised by self diagnosis

Test sequence

• ‒ Pull plug off sender (distributor).
• ‒ → Connect multimeter to measure voltage with aux. cables from V.A.G 1594 to the outer contacts of the plug.
• ‒ Switch on ignition.
       Specification: At least 10 V
• ‒ Switch off ignition.

• ‒ → Connect test box V.A.G 1598/18 to control unit wiring loom.

• ‒ → Check wiring between test box and 3 pin connector to open circuit according to current flow diagram.
       Contact 3 + socket 8
       Contact 2 + socket 13
       Contact 1 + socket 17
       Wire resistance: 1.5 ω
• ‒ Additionally check wires for short to one another.
       Contact 1 + socket 13
       Contact 1 + socket 8
       Contact 2 + socket 8
       Specification:∞ω

If no wiring fault is detected and voltage was present between contacts 1 + 3.

• ‒ Renew distributor with Hall sender , item 17 .

If no wiring fault is detected and no voltage was present between contacts 1 + 3.

• ‒ Replace Motronic control unit (J220) => Page 24-5 , item 3