Crank - No Start
I hate to be a nark, but I am 100% sure the "Powertrain Diagnostic Manual" I linked tells you exactly what to do next if you have battery voltage at pin 30
Tell ya what, hang on, I will look the bastard up myself and paste the flowchart for ya
* Too much of a pita to upload all that stuff, look at page 162, and pages 300-305
Ignore talk of DRB, you can make do with a multimeter
I did not look, but it should also cover testing for your "Engine Check Light" situation
there is no other way to fix things like this
Tell ya what, hang on, I will look the bastard up myself and paste the flowchart for ya
* Too much of a pita to upload all that stuff, look at page 162, and pages 300-305
Ignore talk of DRB, you can make do with a multimeter
I did not look, but it should also cover testing for your "Engine Check Light" situation
there is no other way to fix things like this
Last edited by awg; Jun 8, 2024 at 05:11 AM.
Good morning. With the ignition in the on position and using the voltmeter at pin #30 (output to fuel pump) 12.33 volts. Conversely, with the probe on the positive side of battery and the other probe in pin #87 (- coil) -12.31. Also, did a continuity check from negative side of battery terminal and pin #87 has continuity. Installed a new relay I had in a box never used tightened the pins in the PDC; nothing. Thank you.
CPS = Good / Coil = Good / Relay = Good / Battery = Good / Distributor Sensor = Good
CPS = Good / Coil = Good / Relay = Good / Battery = Good / Distributor Sensor = Good
Last edited by Bosbury1; Jun 8, 2024 at 10:59 AM.
Good afternoon. ***UPDATE*** Replaced the PCM Jeep started up. As soon as the key was turned to the on position the "Check Engine Light" was on. When I took apart the old PCM the electronics were in this rubber solution I could tell immediately one of the two capacitors was about twice the size of the other. Many times when things get fixed we don't report back. I want to thank each of you who chimed in and helped me diagnose my issue. This forum has never let me down. You guys are the best without a doubt. I hope others who look at this thread might find it helpful. Again, thanks for all your help.
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