Technician Safety Information

Safety precautions
If special testing equipment is required during road test, note the following:

WARNING:
- Test and measuring equipment must always be secured to the rear seat and operated from there by a second person.
- If test and measuring equipment is operated from the passenger seat, the person seated there could be injured in the event of an accident involving deployment of the passenger-side airbag.

CAUTION:
Observe the following for all installations, especially in engine compartment due to lack of room:
- Route lines of all types (e.g. for fuel, hydraulic, EVAP canister system, coolant and refrigerant, brake fluid, vacuum) and electrical wiring so that the original path is followed.
- Watch for sufficient clearance to all moving or hot components.

To reduce the risk of personal injury and/or damage to the fuel injection and ignition system, always observe the following:
- Do not touch or disconnect ignition wires when engine is running or turning at starting RPM.
- Only disconnect and reconnect wires for injection and ignition system, including test leads, when ignition is switched off.
- Connectors from Engine Control Module (ECM) may only be removed 10 seconds after ignition is switched off.
- If it is desired to turn engine at starting RPM without starting it (e.g. during compression test), disconnect connector of power output stages for ignition coils and remove both fuses for Motronic in E-box, plenum chamber. After performing work, erase DTC memory and generate readiness code again.
- Do not apply voltage to control module for simulation of output signal.
- Do not operate starter when fuel injectors are removed.

WARNING:
- Obtain radio code for radios with anti-theft coding before disconnecting battery.
- The battery must only be disconnected and connected with the ignition switched off, since the Engine Control Module (ECM) can otherwise damaged.