Ignition timing is controlled by the electronic control ignition timing system. The standard reference ignition timing data for the engine operating conditions are preprogrammed in the memory of the ECM (Engine Control Module).

The engine operating conditions (speed, load, warm-up condition, etc.) are detected by the various sensors. Based on these sensor signals and the ignition timing data, signals to interrupt the primary current are sent to the ECM. The ignition coil is activated, and timing is controlled.

Ignition System

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Repair procedures

On-vehicle Inspection Spark Test 1. Disconnect the ignition coil connectors (A). 2. Remove the ignition coils (A). ...

See also:

Head Lamps. Components and Components Location
Component 1. Head lamp assembly lens & housing 2. Head lamp (High) lamp 3. Dust cap 4. Socket 5. Turn signal/ Position lamp 6. Head lamp (Low) lamp ...

Air intake control
Type A Type B This is used to select the outside (fresh) air position or recirculated air position. To change the air intake control position, push the control button. Recirculated air po ...

Fuel Pressure Control Valve. Repair procedures
Inspection 1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Disconnect the fuel pressure regulator valve ...