Ignition System: Service Precautions

Safety Precautions

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 remove ignition wires when engine is running or turning at starter speed.

• The battery must only be disconnected and connected with the ignition switched off, since the Engine Control Module (ECM) can otherwise be damaged.

• The ignition must be switched off before connecting or disconnecting injection and ignition system wiring or tester cables.

• If engine is to be cranked at starting RPM without starting (e.g. for compression testing), disconnect connectors from power output stage for ignition coils and from fuel injectors. After performing work, check and erase DTC memory.

• Cleaning engine should only be performed with ignition switched off.