Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

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Link: lemon-manuals.la

Ignition Control Module: Description and Operation


The igniter has the section to judge the severity of detonation and a section to control the ignition timing. Based on the signal from the detonation sensor, the igniter judges detonation and controls ignition timing. The igniter incorporates a fail-safe feature which retards the ignition timing by a fixed angle, except at idle, to protect the engine in the event of detonation sensor failure.