EZK Ignition System - Description and Fault Tracing: Overview

85saab03

FILE IN S.I. Man. VOL. I

SEC. 3 PG. 90
Service Information

SUBJECT: EZK IGNITION SYSTEM ISSUE: 10/85-791 DESCRIPTION AND FAULT TRACING


APPLICATION: 1986 Saab 900S


The automatic knock control system for this car is comprised of an electronic ignition system with a Hall-Effect transmitter and a knock detector which allows for a high compression ratio of 10.1:1.

The ignition system adjusts the timing of the ignition to suit the load on the engine, the engine speed and the presence of engine knock.

A knock detector senses ignition knock in the engine and sends a signal to the electronic control unit which then automatically adjusts the ignition advance according to preset parameters and input signals for engine load and engine speed.