I have a 2001 Grand caravan sport with 3.3L, and the error code 0204, #4 injector driver. My injector harness was bad, a lot of bare, metal wires. That has been replaced. Swapped out #4 injector. Still have the code. Tracing wires is nearly impossible. Does anybody know what pin on the PCM module the #4 injector drive ciruit is? or source for schematic with it listed. Manual color codes don't match so far.

Jason

Plug C1, contact 16, brown/tan wire. Is the ground good? A library card will get you free access to EBSCO/ARRC wiring diagrams.

Some electrical signal buss lines might have spare wires in case of one was tobe broken.

www.alldata.com (http://www.alldata.com)

I check continuity from the C1 connector to the connector for the #4 injector harness (thanks). All good. (checked the new harness before I put it in.) Also check common return to wire C1 to harness connection. Continuity good ~.3 Ohms. PCM to ground, ground pin to ground good. Is my module bad? What else could it be? Getting bad firing code 0304 some also, but I think it is sensed because of injector.