Note: Before you start, see Chapter 3. An ohmmeter is required to test the ignition coil.
Removing
1. The ignition coil is made in the form of a cylindrical plastic box. It is bolted to the left fender inner panel, closer to the upper suspension strut mount (under the brake booster fluid reservoir, on some models). On 14 NY, 16 SV, and 18 SV models, the ignition booster assembly is mounted on the ignition coil bracket or base plate (see illustration).
2. Disconnect the negative cable from the battery.
3. Before disconnecting, note the low voltage wiring connections (see illustration).
4. Note that on power steering models, one of the ignition coil mounting bolts also secures the brake booster fluid reservoir bracket.
5. Remove the ignition coil.
6. On cylindrical spool models, the mounting clip can be removed from the spool by unscrewing the nut.
Examination
7. To check the ignition coil, first disconnect the low voltage wiring and the high voltage wire. Check ignition coil primary windings by connecting multimeter across low voltage wire clamps ("+" or "15" and or "1"). Then check the secondary windings by connecting a multimeter to the clamp ("4") and one of the low voltage wire clamps (usually clip "-/1", although in some cases, there may be any clamp). On 20 XEJ models, the results should closely match the specified values. On all other models, typical ignition coil primary resistance is less than 1 ohm and secondary resistance is between 4000-12000 ohms.
8. If the results obtained are significantly different from those indicated, or there is a short circuit or open circuit, the ignition coil must be replaced.
Installation
9. Install in reverse order, but check for proper connection. Usually they are outwardly different so as not to be confused during installation. If this is not the case, label or number the connections yourself. If the connections are reversed, the polarity of the ignition coil will be reversed. Although the engine can run, the spark plugs will wear out faster and the engine will start poorly and/or run erratically.
10. Where available, ensure that the noise suppression capacitor is in place before installing the ignition coil bolts.
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