Series 50 – Section 15.9 Ignition Coil Harness

Section 15.9
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 "Ignition Coil Harness Location" .‪

Figure 1. Ignition Coil Harness Location

Section 15.9.1
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 "Ignition Coil Harness Location" .
3. Disconnect the ignition coil harness from the ECM.
4. Unscrew the harness clips from the cylinder block.

Section 15.9.1.1
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 276 kPa (40 psi) 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 "15.9.1.2 Inspection of Ignition Coil Harness" .

Section 15.9.1.2
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.

Section 15.9.2
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 "Ignition Coil Harness 12 Volt Supply" .
   

   Figure 2. Ignition Coil Harness 12 Volt Supply

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