P1320 common issue on '95 240sx's

[flip240]

I've been searching through a few forums, and I've seen more than a couple people report a P1320 or primary ignition signal on 1995 240sx's. Has anyone resolved the wiring issue?

It's been intermittent on my car up until recently, and my DMM testing between ECM terminal #2 and the resistor input by the distributor shows there is a break in the line. I'm probably thinking of pulling the whole harness out of the car to find the electrical break, but since it seems to be common on 95's, someone might know where the break is on their car? Thanks.

[projectRDM]

Check the harness right above the TPS, next to injector number one. It rubs on the head right as it exits the rail and goes around the front of the engine and can wear into the harness. I've fixed several cars that had shorted the coil wire in that spot.

[flip240]

thanks for that tip, i'll check it out tomorrow!

[Addicted2Kouki]

Same thing happened to me.
Kept poppin fuses and I asked my friend to fix it and I didnt know he just jumped the posts.
DONT DO THAT.

Fried my entire harness.


Either reroute or wrap the harness to avoid breaking thru to bare wires.