Attention! In the transistorized electronic ignition system used on the car models in question, a higher voltage is generated than that characteristic of conventional ignition systems. Be careful and take all necessary precautions.
Programmable ignition system (PGM-IG) based on a microprocessor ensures constant optimization of the ignition timing depending on engine speed, coolant temperature, throttle position and depth of depression in the intake manifold. All necessary data is sent to the control module (ECM) from relevant information sensors such as TDC/TFR/CYP sensor, throttle position sensor (TPS), coolant temperature sensor and absolute pressure sensor in the pipeline (IDA). When the engine is warming up, idling and under load, different ignition timing settings are used. Appropriate adjustments are made by the PGM-IG system. The ignition system also includes an ignition switch/lock, battery, ignition coil, distributor, spark plug kit and BB wires (see illustrations).
The ignition distributor on all models is driven by a camshaft (on Integra models - from the intake camshaft). Ignition advance correction is carried out by the electronic control module (ECM). On all models, the distributor is equipped with a rotation angle sensor. A description of the procedures for diagnosing failures and checking the correct functioning of the TDC / SKR / CYP sensors is given in Chapter Engine management systems.