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SERIES 50 IGNITION COIL HARNESS

The ignition coil harness provides the 12 volt power to the ignition coils and transmits the command signals from the ECM to the coil packs. See Figure 27344 . ‪

Ignition Coil Harness Location

Removal of Ignition Coil Harness

Remove the ignition coil harness as follows: ‪

  1. Pull the connectors of the ignition coil harness from the two coil packs.
  2. Disconnect the ignition coil harness from the 12 volt power supply. See Figure 27344 .
  3. Disconnect the ignition coil harness from the ECM.
  4. Unscrew the harness clips from the cylinder block.
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 loose dirt and debris form the connectors on the ignition coil harness, coil packs, 12 volt power supply, and ECM with compressed air.
  2. Inspect the ignition coil harness. Refer to Section .
Inspection of Ignition Coil Harness

Inspect the ignition coil harness as follows: ‪

  1. Visually check the coil harness for damage.
    1. If damage is found, replace as necessary.
    2. If no damage is found, reuse components.

Installation of Ignition Coil Harness

Install the ignition coil harness as follows: ‪

  1. Press the connectors of the ignition coil harness onto the two coil packs.
  2. Connect the ignition coil harness to the 12 volt power supply. See Figure 27344 .

    Ignition Coil Harness 12 Volt Supply

  3. Connect the ignition coil harness to the ECM.
  4. Attach the harness clips to the cylinder block.