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Can you provide some guidedance as to where the PCM is located and how best to determine the condition of the wiring, i.e. fraied, stiff wiring, burnt, etc. Also, most recently prior to the P1698 code appearing while in the middle driving the Jeep has just stopped running, all power, all everything goes dead. Able to restart while coasting in neutral, but it happens infrequently thereafter. Originally thought it might be vapor lock or something like that but now know it's something electrical related. Thought it might be the Jeep's electronic brain (ECM). Not sure what CCD is? Any diagrams or location pictures for the PCM would be helpful.
The pcm and ecm are the same thing just a different name for the same module.
The PCM is located on the cowl panel in right/rear side of engine compartment.
Make sure the connectors are tight. When removed look for spread terminals, burnt spots, corrosion, etc. Anything that will cause a bad connection
Part# XXXXX for an OEM and is the best way to go for this part
REMOVAL To avoid possible voltage spike damage to PCM, ignition key must be off; and negative battery cable must be disconnected before unplugging PCM connectors.
no cold air blowing out when ac is on but low pressure