When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
2nd Gen Ram Tech1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
Ordered new pcm started truck and same problem within a few seconds it pops 1763,1762. I tested voltage and with new pcm I get 4.8 volts with trans harness disconnected.
5.18 volts pin 4 on unplugged trans connector no continuity between pin 2 and 4 with trans connector and b2 unplugged. I don't get it. Is there anything else on 5v reference circuit that could be causing this
Ok, sensor return signal is Connector 2 pin 1 for temp, pin 29 for pressure. Pin 4 is ground...... It's entirely possible the trans temp/pressure sensor isn't the only sensor to use that ground, so, voltage there, even with the trans unplugged, might be normal. You need to see what voltage is on pin 29.
Pin 29 on old pcm was giving me 5v with c2 disconnected my meter on the pin on pcm and ground. I will check new pcm in few minutes but I expect the same
Should pin 29 at c2 pcm have voltage. I would think that the pin would receive signal voltage not put out voltage. But it's hard to believe that both the old and new pcm are bad with exact same problem