maswart

So the shop found damage chips in the ECM. One cracked and one melted. These are injector circuits we think. I am having trouble locating a replacement though. I want to go salvage, but so far I can't match up the numbers. Do you know if another one might work. Mine is an MECS-G101 D1. Its in a 1987 pathfinder 2.4L with manual transmission. I have located another for an 87 pathfinder manual tranny. Its number is MECS-G120 D1. I think its probably worth a try. Anybody have any more information? Thanks!

Thank you for the information. I pulled the safety relay and it seems to be functioning appropriately. I also pulled the connector to the TPS but there are only two wires in that harness. All the fusible links and relays that I can find are still good. I was thinking bad or damaged ECM, but it does change modes appropriately and display trouble codes when cycled. I'm going to poke around on it some more today.

Hi all - I have a 1987 pathfinder with the 2.4 engine. I'm having an issue getting it running again. It seems like there is no fuel coming out of the injectors. There is fuel pressure. The fuel pump is working. I checked the ECU code and it comes back 43 which is either Open Injector Circuit or Throttle Position Sensor. It will start with fuel in the throttle body or starter spray but dies out as soon as that burns off. I feel like it is an electrical problem, because my son may or may not have jumped the truck off backwards at one time or another. Before that it was working fine. I thought I would find a blown fuse or relay, but so far I've found nothing amiss. Checked relays with 9v battery and multimeter. Any ideas on where to start? How to check signals to the injectors? Check the throttle position sensor? I'm not sure where to go next. thanks!