1.6 System Identification and Applications

The type of ignition system used is determined by engine type. Table a lists the engine codes for cars covered by this manual, and the corresponding ignition system. For more information on engine identification, see ENGINE.

Table a. Ignition System Application

The different ignition systems used on gasoline engines can also be quickly identified by their appearance. The basic TCI-h ignition system has a vacuum diaphragm mounted on the side of the distributor, as shown in Fig. 1-1. The ignition systems with knock control have a knock sensor mounted to the front of the engine block between cylinders 1 and 2 as shown in Fig. 1-3. CIS-E Motronic systems have a second knock sensor mounted between cylinders 3 and 4. TCI-h systems with knock control have a separate knock sensor control unit located in the passenger-side cowl area above the firewall. Digifant and CIS-E Motronic systems do not have the separate control unit.

Fig. 1-1.

Components of basic Transistorized Coil Ignition with Hall sender (TCI-h).

Fig. 1-3.

Knock sensor mounted on front of engine cylinder block.