Contents: Examination ⇊ Replacement ⇊
Examination
1. Turn off the ignition (the key must be turned to the OFF position).
2. Remove the distributor cap, runner and protective screen (with appropriate equipment).
3. Disconnect the electrical connectors of the ignition coil primary circuit.
4a. Using an ohmmeter, measure the resistance between terminals (A and B) of the primary winding of the coil (see accompanying illustrations).
4b. Measuring the resistance of the primary winding of the ignition coil on models with a TEC distributor. Compare the measurement result with the requirements Specifications.
5a. Then measure the resistance between the positive terminal of the primary winding (A) and the terminal of the secondary winding (models with Hitachi distributor). Compare the result with the requirements again Specifications.
5b. Measure the resistance between the positive terminal of the primary winding (A) and the terminal of the secondary winding (models with TEC distributor).
6. Remember that the standard values of winding resistance change with temperature Specifications the values given are for a coil temperature of 21°C.
7. If the measurement result is outside the acceptable range in any of the last two tests, replace the ignition coil.
Replacement
1. Disconnect the negative cable from the battery.
Warning! If the car stereo system is equipped with a security code, make sure you have the correct combination to activate the audio system before disconnecting the battery!
2. Remove the distributor cap and protective screen (with appropriate equipment) (See Chapter Routine maintenance). Disconnect the wires from the coil primary circuit terminals.
3. Remove the two mounting screws (see accompanying illustration) and remove the ignition coil from the distributor assembly.
4. Installation is carried out in reverse order.