Audi Workshop Service and Repair Manuals

Note:

In selector lever positions P and N, the J226 relay for the starter inhibitor and reversing light switches contact 22 on the engine control unit to earth.

• ‒ Connect the V.A.G. 1551 fault reader .
• ‒ Switch on the ignition.
• ‒ Select the function "Reading measured value block" (function 08) and Display Group 20 % Page.

Observe readout in display zone 2.

• Specified value: "Neutral" (selector lever in P or N)

• ‒ Operate the footbrake and engage a gear.

Observe readout in display zone 2.

• Specified value: Driving position "ON"

If the display is not as described:

• ‒ Switch the ignition off.
• ‒ → Connect the V.A.G 1598/22 test box to the wiring harness for the engine control unit
  => Page 24-8.
• ‒ Connect the diode test lamp between contact 3 (terminal 30) and contact 22.
• ‒ The diode test lamp should go out when a gear is engaged.
• ‒ Move selector lever to position P or N.

The diode test lamp should light up.

If the diode test lamp does not light up:

• ‒ Test for an open circuit and short to positive or earth in the wiring between gearbox control unit and contact 22 on engine control unit.

=> Current Flow Diagrams, Electrical Fault Finding and Fitting Locations binder

• ‒ If there are no faults in the wiring, test the multi function switch.

=> Automatic gearbox 01M; Repair Group 01; Gearbox electrical check