For anybody still looking - I did chase the wires going to the pulse module, and checked voltages and grounds. All were as designed except the 12 gauge violet out to the starter solenoid. I measured 12V on the sensor ground connected to the PCM; I don't know how to interpret that.


At the clutch interlock, 12V violet splits and goes to the pulse module and to the PCM. After a lot of looking and probing, I think I measured the right wire, and got about 5mV on the violet at the PCM, rather than 12V. It may be that I can run another wire, at least temporarily, from the clutch interlock switch to the PCM to ensure I have the proper voltage. Maybe I found what the rat ate.


More as it happens.


Michael