See Figure 1
The ignition coil provides the electricity which the spark plugs use to ignite the air/fuel mixture in the combustion chamber. As it's name implies, it is a coil which initially receives a nominal 11 volt signal of current and increases the output to thousands of volts.
See Figures 2 and 3
- Verify that the ignition switch is in the OFF position.
- Remove the primary connector using spark plug wire pullers or a twisting motion with your hand. Inspect for dirt or corrosion, and clean if necessary.
- Measure the resistance between the positive and negative terminals of the primary wire harness with an ohmmeter. Resistance should measure 0.2-1.0 ohms.
- Measure the resistance from the negative (-) terminal of the wire harness to the high voltage terminal of the coil. Resistance should be between 8000-11,500 ohms
- Replace the coil, if either readings are not within the given specifications.
REMOVAL & INSTALLATION
See Figures 5, 6 and 7
- Disconnect the negative battery cable.
- Remove the ignition coil wiring harness, at the coil. Using spark plug pullers or your hand, remove the high voltage coil lead attached to the coil.
- Unscrew the ignition coil retaining bolts and remove the coil assembly.
- Place the ignition coil into position and install the retaining screws.
- Reconnect the ignition coil high voltage wire and wiring harness.
- Reconnect the negative battery cable.
- Start vehicle to verify proper operation.