Safety Precautions
To prevent personal injury and damage to the injection and ignition system, observe the following:
- The ignition must be switched off before connecting or disconnecting injection and ignition system wiring or tester cables.
- Only clean engine with ignition switched off.
- If electrical connectors were disconnected, faults are saved in ECM:
-- Connect the vehicle diagnosis, testing and information system VAS 5051B while the ignition is switched off.
-- Start "Guided Functions" operating mode.
-- Generate readiness code in ECM.
Risk of destroying electrical components when battery is disconnected.
- Observe measures when disconnecting battery.
- Only disconnect battery with ignition switched off.
-- Disconnect battery. Refer to [For transmission(s) 02E] Removal and Installation .
If it is necessary to use testing and measuring devices on road tests, observe the following:
Distraction and improperly secured test equipment can lead to accidents.
Risk of passenger airbag deploying in an accident.
- Operating testing and measuring equipment while driving creates a distraction.
- There is an increased risk of injury due to unsecured testing and measuring equipment.
TT Coupe:
Always secure testers on the rear seat with a strap and have a second person on the rear seat operate them.
TT Roadster:
- Position passenger's seat as far back as possible.
- Only use the vehicle diagnosis and service system VAS 5052 or diagnostic system VAS 5053.
- Testing and measuring instruments -1- must lay flat on the passenger's thighs and be operated by him or her, as shown in the illustration.