PCM low voltage
03-17-2012, 02:45 PM
#12
Retired
Certified Car Nut
So, you take the old PCM out, put the new one in, turn power on, scan for codes and you still see the same one?
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
03-17-2012, 03:28 PM
#14
Retired
Certified Car Nut
Conduct the same test, instead connect the negative lead of your multimeter to the PCM case.
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
03-19-2012, 01:51 PM
#16
Junior Member
Posts like a V-Tak
Thread Starter
Join Date: Mar 2012
Location: Las Vegas
Posts: 26
Likes: 0
Received 0 Likes
on
0 Posts
I did the test on the neg to the PCM case and I still have the same voltage 1.2 to the sensors on both sides the PCM pin and all the way to the sensor
03-19-2012, 02:09 PM
#17
Retired
Certified Car Nut
Uh, dumb question, but where are you getting that you need 5V from that pin?
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
03-19-2012, 03:19 PM
#18
Junior Member
Posts like a V-Tak
Thread Starter
Join Date: Mar 2012
Location: Las Vegas
Posts: 26
Likes: 0
Received 0 Likes
on
0 Posts
I search on how to test the sensor and they said first thing it'* to check if the sensor is receiving 5 volts and good ground from the PCM I check ground it'* good and I am not receiving the 5 volts
03-19-2012, 03:34 PM
#19
Retired
Certified Car Nut
Reason I ask is, your on a 2nd pcm giving out 1.2 volts. It just made me wonder if thats what the voltage is suppose to be.
I don't remember, but you did test/replace the TPS?
I don't remember, but you did test/replace the TPS?
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
