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

...

Repair procedures

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

See also:

Engine Coolant Temperature Sensor (ECTS). Description and Operation
Description Engine Coolant Temperature Sensor (ECTS) is located in the engine coolant passage of the cylinder head for detecting the engine coolant temperature. The ECTS uses a thermistor th ...

Steering Angle Sensor. Description and Operation
Description The Steering Angle Sensor (SAS) is installed in EPS (Electric Power Steering) and it sends messages to HECU through CAN communication line. The SAS is used to determine turning ...

Auto down window (if equipped) (driver’s window)
Pressing the power window switch momentarily to the second detent position (6) completely lowers the driver’s window even when the switch is released. To stop the window at the desired posit ...