Audi Workshop Service and Repair Manuals > A2 > Power unit | MM-MPI injection and ignition system (4-cylinder) | Mixture preparation system, electronic inj.,Gas | Servicing injection system | Wiring and component check with test box V.A.G 1598/31

MM-MPI injection and ignition system (4-cylinder)

Servicing injection system

Wiring and component check with test box V.A.G 1598/31

Notes:

◆ Use the hand multimeter V.A.G 1526 or the multimeter V.A.G 1715 and the diode test lamp V.A.G 1527 for the checks.
◆ To connect the testers to test box 1598/31, always use the adapter leads from adapter set V.A.G 1594.
◆ When the engine control unit is disconnected the learned values are erased but the contents of the fault memory remain intact.

Warning!
To prevent damage to the electronic components, switch to the respective measuring range before connecting the test leads and o

Connecting test box V.A.G 1598/31

Important: switch off ignition.



‒ → Release connector on engine control unit -1- and unplug connector.



‒ → Connect test box V.A.G 1598/31 to connector on relevant wiring harness. ‒ Carry out test as described in the relevant repair instructions.

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