Volkswagen Golf Workshop Service & Repair Manuals - Get Them Now!

• ‒ → Separate 8 pin connector to throttle valve control part.
• ‒ Connect multimeter to measure voltage at contacts 4+7 of connector.
• ‒ Switch on ignition.
       Specification: min. 4,5 V
• ‒ Switch off ignition

• ‒ Connect multimeter to measure voltage at contacts 3+7 of connector.
• ‒ Switch on ignition
       Specification: min. 4.5 V
• ‒ Switch off ignition.

If the specifications are not attained:

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

• ‒ → Check wiring between test box and 8 pin connector for open circuit according to current flow diagram.
       Contact 3 + socket 10
       Contact 4 + socket 14
       Contact 7 + socket 17
       Wire resistance: max. 1.5 ω
• ‒ Check wiring at 8 pin connector for short to one another.
       Contact 7 + socket 10
       Contact 7 + socket 14
       Contact 4 + socket 10
       Specification: ∞ ω

If no wiring fault is detected:

• ‒ Renew Motronic control unit (J220) , item 3 .