Volkswagen Workshop Service and Repair Manuals

Special tools, testers, measuring instruments and auxiliary items required

• ◆ 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

• ● Battery voltage at least 11.5 V

Test sequence

• ‒ → Remove ignition cables off ignition transformer and remove cable duct -2-.

• ‒ → Pull 3 pin connector off Hall sender -arrow-.

• ‒ → Check voltage between contacts 1+3 of detached connector.
• ‒ Switch on ignition.
       Specification: Min. 11.5 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 for open circuit according to current flow diagram.
       Contact 1+socket 23
       Contact 2+socket 44
       Contact 3+socket 56
       Wire resistance: Max. 1.5 ω
• ‒ Additionally check wires for short to one another.
       Contact 3+socket 44
       Contact 3+socket 23
       Contact 2+socket 23
       Specification: ∞ω

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

• ‒ Renew Hall sender (G40)
  , item 1 .

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

• ‒ Renew engine electronics control unit => Page 24-112 .