cadillac Workshop Repair Guides

Cadillac Workshop Service and Repair Manuals

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Knock Sensor > < Starter Enable Relay <--> [Ignition Shut Down Relay (For Antitheft)]|Description and Operation

Seville V8-273 4.5L (1989)

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Camshaft Position Sensor: Description and Operation

The engine speed signal comes from a seven terminal High Energy Ignition (HEI) module in the distributor.  Pulses from the distributor are sent to the
ECM where the duration between these pulses are used to calculate engine speed.  The ECM adjusts spark advance and sends a signal back to the
distributor.

Knock Sensor > < Starter Enable Relay <--> [Ignition Shut Down Relay (For Antitheft)]|Description and Operation