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SERIES 50 IGNITION COIL HARNESS

The ignition coil harness provides the 12 volt power to the ignition coils and igniter module, transmits the command signals from the ECM to the igniter module, and the ground circuit from the coils to the igniter module. See Figure 27165 . ‪

1. Bolt ‪

5. Bolt ‪

2. Module ‪

6. Harness Connector ‪

3. Bracket ‪

7. Bolt ‪

4. Bolt ‪

Ignition Coil Harness

Removal of Ignition Coil Harness

Remove the ignition coil harness as follows: ‪

  1. Remove the two Phillips screws holding the coil cover in the rocker cover. Remove the coil cover.
  2. Pull the connectors of the ignition coil harness from the four ignition coils.
  3. Pull the connectors from the igniter module.
  4. Disconnect the ignition coil harness from the 12 volt power supply.
  5. Disconnect the ignition coil harness from the ECM.
  6. Unscrew the harness clips from the rocker cover and the cylinder block.
  7. Inspect the ignition coil harness. Refer to Section .
Cleaning of Ignition Coil Harness

Clean the ignition coil harness as follows: ‪

EYE INJURY

To avoid injury from flying debris when using compressed air, wear adequate eye protection (face shield or safety goggles) and do not exceed 40 psi (276 kPa) air pressure.

  1. Remove dirt and debris form the connectors on the ignition coil harness, coils, igniter module, 12-volt power supply, and the ECM with compressed air.

Inspection of Ignition Coil Harness

Inspect the ignition coil harness as follows: ‪

  1. Visually check the harness for damage.
    1. If damage is found, replace the ignition coil harness. Refer to Section .
    2. If no damage is found, reuse the ignition coil harness. Refer to Section .

Installation Ignition Coil Harness

Install the ignition coil harness as follows: ‪

  1. Press the connectors of the ignition coil harness onto the four ignition coils.
  2. Connect the ignition coil harness to the igniter module.
  3. Connect the ignition coil harness to the 12 volt power supply.
  4. Connect the ignition coil harness to the ECM.
  5. Attach the harness clips to the rocker cover and cylinder block.
  6. Add anti-seize compound to the two coil cover mounting screws to aid removal in the future.
  7. Install the coil cover on the rocker cover with the two Phillips mounting screws.