Ignition System: Service Precautions

Safety Precautions

Observe the following if test and measuring instruments are required during a test drive:

CAUTION!
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.

• Always secure testers on the rear seat with a strap and have a second person on the rear seat operate them.

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

• Always switch the ignition off before disconnecting or reconnecting wires for the ignition system, including high voltage wiring and test leads.

• If the engine is to be cranked at starting RPM without starting (for example, for a compression test), disconnect the electrical connectors from the ignition coils and from the fuel injectors. After performing work, check and erase the Diagnostic Trouble Code (DTC) memory.

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

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