Audi Workshop Service and Repair Manuals

Pay attention to the following points when carrying out work on vehicles fitted with the Motronic system in order to avoid injuries to persons and/or damage to the Motronic control system.

• ◆ For radios with anti-theft coding, ask for code before disconnecting battery.
• ◆ Always switch off the ignition before connecting or disconnecting the battery, otherwise the Motronic control unit may be damaged.
• ◆ Wait at least 30 seconds after switching off the ignition before disconnecting the plugs of the Motronic control unit, as otherwise the Motronic control unit can be damaged.
• ◆ Always switch off the ignition before connecting or disconnecting ignition system wiring or tester cables.
• ◆ For assisted starts with a rapid charging unit the maximum permissible voltage is 16.5 V and the maximum charging time is 1 minute.
• ◆ Always switch off the ignition before washing the engine.

• ◆ Vehicles that have an actual or suspected fault in the ignition system, must not be towed unless the connector at the power output stage is unplugged.
• ◆ To run engine at starting speed (for example, in order to test compression), unplug connector from the output stage of the ignition coils and also the connectors on the injectors.
• ◆ Do not operate the starter if the injectors are removed.
• ◆ Always use measuring aids set V.A.G. 1594 to connect the measuring equipment.

Engine codes ADP and ADR

• ◆ Never touch or disconnect the ignition cables whilst the engine is running at normal speed or starting speed.

Engine code ADP

• ◆ Do not connect a capacitor to terminal 1 (-).
• ◆ Do not replace the distributor rotor 1 kω(Identification: R1) with a different type even for radio interference suppression.