CM2150 Electronic Control System – 019-063   Internal Actuator Wiring Harness

• Disconnect the three Deutsch™ 4-pin connectors on the engine harness from the pass-through connector.
• Remove the crankcase breather tube. Refer to Procedure 003-018
• Refer to Procedure 003-018 in Section 3.
• Remove the rocker lever cover. Refer to Procedure 003-011 in Section 3.
• Refer to Procedure 003-011 in Section 3.

Some ISB engines use an optional injector pass-through wiring harness built into the rocker lever cover gasket.

Remove the pigtail nuts from all injector solenoids.

Remove the rocker housing. Refer to Procedure 003-013 in Section 3..

Remove the internal injector harness and the plastic clips from the rocker lever housing.

Remove the pass-through connector from the rocker housing.

Inspect for damaged or exposed wires, bent or broken pins, or damaged connectors.

Replace, if necessary.

Install the pass-through connector into the rocker housing.

Route the injector wiring around the metal tabs to the injectors.

Install new plastic clips into the rocker housing.

Install the rocker lever housing. Refer to Procedure 003-013 in Section 3. .

NOTE: Verify that the internal injector harness does not rest on any sharp corners.

NOTE: Verify that the pigtail wires are not “crossed over” to the wrong injectors.

Install pigtail nuts on the injectors.

ISB, ISDe, and QSB3.3 CM2150 Engines:

ISC and ISL CM2150 Engines:

NOTE: Injector wire to injector orientation is not significant.

• Install the rocker lever cover. Refer to Procedure 003-011 in Section 3.
• Connect the engine harness to the pass-through connector.
• Install the crankcase breather tube. Refer to Procedure 003-018 in Section 3.
• Operate the engine and check for leaks