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2015 Police Interceptor Sedan 3.7 L AWD w/o IA "No Crank Condition"

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3 weeks 5 days ago - 3 weeks 2 days ago #79949 by nnsyyardbird
 The car started up for about 2 months but out of the blue w not crank. If  you jump motive power to starter side of the starter motor relay ( terminal 3 to 5) motor turns over but of course does not  start . Power to pin 16 at PCM from ignition switch, no output from pin37 of PCM to relay terminal 2 of starter motor relay. Have path to ground on control side of starter motor relay.
 As far as I can determine the car does not  have an IA key bod. So my troubleshooting has been on the starting system w/o IA.
Trying to determine what is preventing out[put of PCM at pin 37 of PCM, new PCM installed in May 2024 but still no output at PCM pin 37.
Looking for guidance on next troubleshooting steps to take before the car goes to junkyard.
Last edit: 3 weeks 2 days ago by Tyler.

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3 weeks 2 days ago #80530 by ferris48
Here are some PIDS to investigate.

Make sure PCM PID "ENG_CRANK" says Active when key is turned to start position. And Inactive, otherwise.

Make sure the PCM PID "IN_GEAR" says NO in Park and Neutral.
I assume this PID will say NO as long as you're in park or neutral and YES, if in drive

BCM PID "IGN_SW_STATE" should switch from "OFF" to "START"
While turning ignition switch from OFF to START

 
 
The following user(s) said Thank You: nnsyyardbird

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