Ignition System, Checking

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 engine is running or turning at starting RPM.

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

• It is possible that the control module will recognize a malfunction and store a DTC during some tests. After completing all tests and repairs, DTC memory should therefore be checked and erased if necessary. Readiness code must be generated after DTC memory is erased => [ Readiness Code ] Monitors, Trips, Drive Cycles and Readiness Codes.

• Always switch ignition off before cleaning engine.