Hi John thanks for the additional information, that will give me enough to go on.
Basically the PRO bypass is only bypassing the ignition cylinder portion of the security circuit, so the information from the key cylinder or PRO bypass module still has to be decoded by the EVO/Passlock module and then it will send the fuel enable on to the ECM or engine computer over the class 2 data line.
Based on the information you have given up to this point, I believe there to be an issue with the EVO/Passlock module. My assumptions are this.... The PRO Bypass is mimicking a CORRECT key value when installed, however if the module is dead or for some reason offline, it will still not communicate the fuel enable password XXXXX the class 2 data line to the ECM and therefore will still not start.
As further evidence of this, in the description of the security system, it says that if the security light stays ON SOLID all the time, that there IS a communication issue between the EVO/Passlock module from either wiring or a bad EVO/Passlock module.
So what we need to do at this point is determine if the Passlock module has all the proper inputs to function such as the powers and the grounds, then we can verify the communication wiring also. If all of those things check out, then by process of deduction we have isolated the culprit as the EVO/Passlock module and it will need to be replaced.
I have NEVER replaced the ECM for this kind of issue, so my initial inclination is that there is an issue with the Passlock module.
First CLICK HERE
for the information for us to reference, I would print it out.
- Reference the schematic and check highlighted fuses with a test light for power with key on.
- Remove the THEFT/EVO module and verify the same powers are good at the connector of the module, do not push the test light in the front of the connector, come from the back so as to not damage terminals.
- Use one of the powers to power up your test light and then touch the ground wire and make sure the light lights, this is verifying our ground to the THEFT module is ok.
Check those things and then report back what you have found and we can go from there.
If you need any clarification on anything or have additional questions, just post back here and it will alert me.