Power Supply and Cables Check

Checking Power Supply And Wiring To Control Module
- Remove stowage compartment on driver's side:
- Disconnect 6-pin connector of throttle position sensor.
- Switch ignition on.







- Connect following contacts with multimeter and check voltages:
contact 1 + Ground
contact 1 + 5
contact 2 + Ground
contact 2 + 3
- Specification: 4.5 V minimum

- Switch ignition off.

If specifications are not reached:
- Remove wiper arms from cowl:







- Connect adapter cable V.A.G 1598/31 with wiring harness of control module. Control module is not connected in this case!







- Check wiring between test box and connector for open circuit according to wiring diagram:
contact 1 + sleeve 72
contact 2 + sleeve 73
contact 3 + sleeve 36
contact 4 + sleeve 35
contact 5 + sleeve 33
contact 6 + sleeve 34
- Resistance: max. 1.5 Ohms

- Check wiring for short circuit to battery positive or Ground.
- Check wiring for short circuit to one another.

If no wiring malfunction is found:
- Replace throttle position sensor, item 4


NOTE: For vehicles with automatic transmission, the transmission control module must also be adapted: