Centinel System – Repair Manual – 020-015   Engine Brake Wiring Harness

NOTE: Early engines used a threaded brake pass-through connector. A retaining nut was used to hold the pass-through connector in place. Current production engines utilize a clip to retain the pass-through connector.

Remove rocker lever cover. Refer to Procedure 003-011.

Disconnect the engine wiring harness from the brake pass-through.

Remove the pass-through retaining nut.

Remove the brake pass-through connector from the cylinder head.

Disconnect the engine wiring harness from the brake harness pass-through connector.

Remove the brake pass-through retaining clip.

Remove the pass-through connector from the head.

NOTE: The engine brake harness can be laid over the side of the engine to service overhead components. It is not necessary to remove the brake pass-through connector.

Disconnect the solenoid wires.

With your hands about 18 inches apart, grasp the engine brake wiring harness support bracket and pull it up and out of the cylinder head.

With the wiring harness isolated from the solenoids, inspect the wiring harness for broken wires or connectors.

Check the engine brake wiring harness for shorts. Refer to fault codes 388, 392, and 393 in the Fuel Systems Troubleshooting and Repair manual for procedures on checking harness resistance.

Install the engine brake wiring harness support bracket into the cylinder head.

Connect the solenoid wires.

Install and connect the brake pass-through connector to the cylinder head.

Install and connect the brake pass-through retaining nut.

Install and connect the engine wiring harness to the brake pass-through.

Install the rocker lever cover. Refer to Procedure 003-011.

Install and connect the brake pass-through connector to the cylinder head.

Install and connect the brake pass-through retaining clip.

Install and connect the engine wiring harness.

Install and connect the rocker lever cover. Refer to Procedure 003-011.