Ignition Checks: Notes

NOTE: To identify ignition system type by application, see ENGINE/VIN ID article.

NOTE: For circuit identification, see appropriate wiring diagram in WIRING DIAGRAMS article.

NOTE: If an ignition failure occurs, ignition system may operate with limited ability using Failure Mode Effects Management (FMEM) or Hardware Limited Operation Strategy (HLOS). When this occurs, trouble codes should be present in PCM memory, engine may be hard to start, and timing will not change.