Safety Precaution

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 disconnect ignition wires when the engine is running or turning at starting RPM.
- Always switch the ignition off before disconnecting or reconnecting wires for the injection and ignition system, including high voltage wiring and test leads.
- If the engine is to be cranked at starting RPM without starting (e.g. for compression testing), disconnect connectors from ignition coils and from fuel injectors.
- It is possible that the control module will recognize a malfunction and store a DTC during some tests. After completing all tests and repairs, the DTC memory should be checked and erased, if necessary. The Readiness code must be generated after the DTC memory is erased.
- Always switch the ignition off before cleaning the engine.