Ford Edge 2008 will not start, there is no spark
When I turn on the ignition, fuel pump shakes once, you turn the starter turns but the RPM do not rise,
Scanner also showing that there is no symptoms of crankshaft signals,
But other parameters of other sensors Like engine coolant, air temperature , the gas pedal, electronic throttle control, mass air flow sensor is OK
Wiring from crankshaft sensor to PCM is OK.
Resistance of crankshaft sensor is also OK. its about 700 Ohms
(Immo related fault or Other Computer faults does not have, )
Interesting thing is this when you disconnect any other sensor or injectors, PCM is detecting disconnected sensors
but it’s not detecting that crankshaft sensor fault. even after cranking it’s not showing, cranshaft missing fault is not appearing on faults list .
What to do:
Program another known good PCM if problem persists check continuity of CKP harness and probably replace CKP sensor.
When you replaced with a used PCM it’s not compulsory to change VIN. Just make sure the programming procedure is properly followed.
pins from sensor to ecu contacts once again checked, checked crankshaft clearances, the car started.
The conclusion is the following: for diagnostics by OBD one can’t see any error, Autel Maxisys ( FORD) and Launch 431 ( FORD) also don’t see that there is a crankshaft sensor or not. maybe there is no such function at all in the PCM itself to sense disconnected crankshaft sensor … if it is a factory made then it should not repeat again … if not, then sooner or later this car will not start again ….
No any of above scanner are seeing RPM while starter turns, its showing RPM after the engine is running
Best bet is to use FORD IDS for PCM programming.
***NONE of the clone VCM2 will do old PCM programming is because of the EEprom programming signal higher voltage required can’t be produced by those clones.
In short, when programming these PCM, the VCM sends a higher voltage (around 18v) to 1 pin of the PCM to “open” the programming session. Clones can’t do that.
Better get an OEM VCM2 as I did.
Buy 1 good tool instead of 2 or 3 crap tool
How to use Ford IDS for PCM reprogramming?
Please connect the cloned VCM2 unit to the car and run Ford IDS
Step 1:Select the toolbox tab at the top of the screen
Step 2: Select “Module Programming”
Step 3: Select the tick mark or the Enter key
Step 4: Select “Module Reprogramming”
Step 5: From the fly out menu, select the type of module to be reprogrammed
Step 6: Select the tick mark or the Enter key
Step 7: The application will compare the current calibration level to the latest one available for that vehicle. A message will appear.
Step 7A: If no later calibration is available, a message will appear indicating this. Select the tick mark or the Enter key to return to the Module Programming menu.
Step 7B: If a later calibration is available, a message will appear asking if you want to reprogram the module with this calibration. If you do not want to reprogram the module, select “No”. You will be returned to the Module Programming menu.
Step 8: If you want to reprogram the module, select “Yes” in response to the question “Do you want to program the vehicle with this calibration?”
Step 9: Make sure that an Internet connection has been established and then select ”Confirm”
Step 10: You will be presented with a screen that recommends that you carry out Self Test. If you choose to complete this test, you will receive a list of Diagnostic Trouble Codes (DTC’s) that have been set on the vehicle. When finished viewing this list, select “Exit”.
Step 11: Follow the on-screen instructions to prepare the vehicle and turn the ignition key off and on.
Select the tick mark or the Enter key after each one.
Step 12: If necessary, apply the reprogramming label to the PCM
If an emissions recall has been performed or a required emissions-related TSB has been completed, an Authorized Modification label must be placed on the PCM. These labels can be purchased at the parts counter of a Ford or Lincoln/Mercury dealership.
Step 13: Select the tick mark or the Enter key to return to the Module Programming menu of Ford IDS.