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If any part of the taped portion of the harness is touching the ficm wiring harness retaining bracket then you must look for chaffing on the wiring harness.

2004 toyota sequoia radio wiring diagram. Only thing left that we can think of is replace the whole wiring harness for the engine. Cut cylinder number 2 fuel injector connector off the engine harness approximately 381mm 15in away from the base of the connector. Look for any chafes into the tape.

This store collection showcases all of the available custom bt dieselworks wiring harnesses for your late model gm trucksuv. When these codes are set there is either a wiring concern between the engine control module ecm and the fuel injection control module ficm or a concern with the control module itself ecmficm. Did injector harness fix replaced all harnesss replaced 4 injectors that showed bad balance rates replaced the ficm.

It must be disconnected from the ficm and bent back towards the engine. Sooner or later most 20045 llylbzlmm duramaxs will experience the dreaded injector harness problem. If there is a concern on the injector driver circuits open short to ground or high resistance it is possible to have a high injector balance rate.

Find best value and selection for your gm fuel injector connector wire harness 2004 2005 duramax diesel lly 66l ficm search on ebay. It only runs like crisp every now and then though now. It is not necessary to maintain the same polarization of the injector circuits.

Some of these chafes are very small possibly the. The injectors wiring harness is zip tied to the metal flange by the alternator. My truck is running rough trying to figure the issue out.

Sometimes it runs fine other times other times it runs like crap. If the cause of the concern is not found through normal diagnostics check for loose or corroded wire connections at the injector. A common problem that we are seeing with the 20045 to 2006 gm duramax lly engines is what is known as a harness rub.

If ok check for a wiring problem between the injector and the ficm. If necessary peel the tape from the area and look for any chafes into the wires.

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