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:

Coolant Repair procedures
Replacement And Air Bleeding     Never remove the radiator cap when the engine is hot. Serious scalding could be caused by hot fluid under high pressure escaping from the radi ...

Heated Steering wheel Repair procedures
Inpection 1. Measure a resistance of NTC and Heated pad. A. NTC resistance(Black / Yellow, Black) - 10.0 k? ± 10% (25°C) B. Heated pad resistance (Yellow, Black) - 1.6 ~ 2.0 ? ± 10% ...

Rear Wheel Speed Sensor. Repair procedures
Removal 1. Remove the rear wheel and tire. Tightening torque: 88.3 ~ 107.9 N.m (9.0 ~ 11.0 kgf.m, 65.1 ~ 79.6 lb-ft) ...