I have a 2005 ford super duty diesel. It quit running on the interstate and now it cranks but won't start. No communication with scan tool and all fuses are good. Could it be the ECM?
Does the check engine light come on with the key on and go out when cranking?
I think so. I don't have the truck here to check for sure. The check engine light had been on previously while driving.
I would try a different scan tool,it can be a number of items on this type of vehicle and without pulling codes or verifying the ECM has a problem I wouldnt go further.best to have a shop look into this for you.There isnt much you can do on your own repair wise without numerous special service tools.
20 years Auto experience, Ford ,GM, Chrysler, Asian & European
Reply to HDGENE's Post: That's the first thing I did. Itried two different scan tools and then hooked them up to another vehicle and they worked fine.
Are they CAN compliant scan tools?They must be in order to communicate with the 6.0 liter.
Then you would have to check powers and grounds to the pcm and run a diagnostic check on the data link connector to see if other modules on the network are working and communicating with each other by running a network test with a scan tool.
It won't let me run any test with the scan tool.I tried running different tests and kept coming up no communication.
Do you have power to pin #16 on the Data link connector?Lower row of pins in the corner?Last pin.
I WILL CHECK AND GET BACK TO YOU.
Ok let me know because most scan tools wont communicate without power on pin 16.
Reply to HDGENE's Post: OK, I'm back. The check engine light comes on with the key and stays lit when cranking,does not flash.There IS power on pin # XXXXX on the diagnostic connector.
OK, I'm back. The check engine light comes on with the key and stays lit when cranking,does not flash.There IS power on pin # XXXXX on the diagnostic connector
Is this a 250,550? What kind of scan tools are you using, just curious.How many miles are on this truck and have you had any repairs done to it recently.Post your VIN number so I can run a few concise checks.
Reply to HDGENE's Post: Snap-on scan tools - F250 super duty 6.0, standard shift,4x4 - 1FTSX21P95EB18697
I worked at Ford for 12 years Ford and a.s.e. certified but I didn't work on a lot of diesels
Ok lets see if you can identify the fault with the communication end.Below is the PCED pinpoint test that you should be familiar with using:
Note: The diagnostic tool resets if battery voltage is less than 9.5 volts. If carrying out repeated self-tests, disable the glow plug control module (GPCM) and disregard the glow plug codes while GPCM is disabled. If equipped with a power take-off (PTO) system, it must be disabled while carrying out the PCM self-tests.
Was the correct self-test procedure used?
Is system passed obtained?
Are the voltages greater than 10.5 volts?
Are the resistances less than 5 ohms?
Are the resistances greater than 10,000 ohms?
Note: If a sensor is shorted internally the reference voltage will be within the specification when the sensor in question is disconnected.
Is the voltage between 4.5-5.5 volts?
Note: If a sensor or actuator is shorted internally the reference voltage will be within the specification when the sensor or actuator in question is disconnected.
Note: Monitor the voltage change while connecting the sensors and the actuator. If a sensor or actuator is shorted internally the reference voltage will not be within the specification when the sensor or actuator in question is connected.
This pinpoint test is intended to diagnose only the following:
CAUTION: The PCM harness connectors must be properly seated and the connector latch properly attached to eliminate possible driveability concerns or a no start condition. Installing the PCM connectors on an angle may cause an improper connection, misdiagnosis, and damaged components. Install the connector until the lever pivots and seats itself. Apply light pressure to get the connector into position on the PCM and then fully seat the connector.
Note: Visually inspect the harness connectors for corrosion, damage, proper mating, and correct pin tension.
Where is the PCM located on this year truck?
Drivers side fender as shown in the picture below:
Reply to HDGENE's Post: 175,000 MILES - NEVER WORKED ON. OIL FIELD TRUCK BEAT FROM ONE END TO THE OTHER.
The test above is basically what you would run through for no communication to the pcm, keep in mind this also uses a FICMmodule ot control the injectors. If you havent done much work on one, get ready for a learning experience,these trucks were plagued with issues with alot of wire harness chafing problems around the intake manifold all around the top of the engine and so on.
Reply to HDGENE's Post: Thanks for the info.Iworked on several 7.3 but not the 6.0 - Would this chafing shut one down just like you turned the key off? The guy that was driving it said it didn't miss,buck,jerk,nothing. It was like you turned the key off.
Anything is possible but it should not cause no communication with the PCM.
Reply to HDGENE's Post: I will check all of this and get back to you again. thanks
No problem, let me know what you find and if you need more assistance.,