2008 Super Snake Failsafe Engine Mode
Posted: 2021 Oct 22, 18:07
Having trouble with a 2008 Shelby GT500 Super Snake
Customer said engine would not crank. he installed a new battery, engine still would not crank.
I tried checking codes. Ford IDS would not communicate with the PCM. I tried programming with IDS. programming kept locking up.
I had a tune file from this car when I turned the traction control on. I loaded that file to the PCM. Now the instrument cluster would show mileage.
I then went back to using Ford IDS. Tried programming again. This time programming went through. I programmed keys, Engine would crank and start.
I had an SCT tune file for this car from Kenne Bell when I was trying to turn the traction control back on. A year ago when I tried loading that file the PCM would show Failsafe engine mode. So I just used Hptuners.
I tried loading that fiel to the car but it would not go it. It gave me an error code for I think not compatible. Something like that. I figured out when I programmed the PCM with the IDS it changed the strategy code. It was originally SXH1. it changed to KDH0.
So I built a new base file coping the tune I was sent from Kenne Bell SXH1 to KDH0. I've loaded that tune and I still get Failsafe engine mode.
I've preformed testing on the Throttle body and accelerator pedal following Fords test to make sure I go over all the wiring and component testing throttle position sensor and accelerator pedal. both test good.
I've used a DVOM to check for any voltage a ETC motor when I key on or when I press the accelerator pedal. I don't get any voltage reading on the dvom.
The 2 codes I'm getting are P2104 and P0600
I'm guessing something needs to be changed in the tune to be happy with the throttle body. Torque source is showing ETC FMEM.
P0600 description is
Serial Communication Link
Indicates an error occurred in the powertrain control module (PCM). This DTC may be set alone or in combination with P2105.
Possible Causes:
Software incompatibility issue
Damaged PCM
the test for this code askes if the vehicle shifts into 4x4 or not. if you answer yes it says to refer to a test for no problem found. that test will run you in circles. I've never had luck using those test.
If you answer no it refers me to transfer case diagnostic. this vehicle does not have a transfer case.
P2104
Throttle Actuator Control (TAC) System - Forced Idle
The TAC system is in the failure mode effects management (FMEM) mode of forced idle.
This DTC is an informational DTC and may be set in combination with a number of other DTCs which are causing the FMEM. Diagnose other DTCs first
I've followed the test for this code with not luck.
Ask me any question I may have left some info out. a lot of stuff I've gone over.
Thanks
Chris
Customer said engine would not crank. he installed a new battery, engine still would not crank.
I tried checking codes. Ford IDS would not communicate with the PCM. I tried programming with IDS. programming kept locking up.
I had a tune file from this car when I turned the traction control on. I loaded that file to the PCM. Now the instrument cluster would show mileage.
I then went back to using Ford IDS. Tried programming again. This time programming went through. I programmed keys, Engine would crank and start.
I had an SCT tune file for this car from Kenne Bell when I was trying to turn the traction control back on. A year ago when I tried loading that file the PCM would show Failsafe engine mode. So I just used Hptuners.
I tried loading that fiel to the car but it would not go it. It gave me an error code for I think not compatible. Something like that. I figured out when I programmed the PCM with the IDS it changed the strategy code. It was originally SXH1. it changed to KDH0.
So I built a new base file coping the tune I was sent from Kenne Bell SXH1 to KDH0. I've loaded that tune and I still get Failsafe engine mode.
I've preformed testing on the Throttle body and accelerator pedal following Fords test to make sure I go over all the wiring and component testing throttle position sensor and accelerator pedal. both test good.
I've used a DVOM to check for any voltage a ETC motor when I key on or when I press the accelerator pedal. I don't get any voltage reading on the dvom.
The 2 codes I'm getting are P2104 and P0600
I'm guessing something needs to be changed in the tune to be happy with the throttle body. Torque source is showing ETC FMEM.
P0600 description is
Serial Communication Link
Indicates an error occurred in the powertrain control module (PCM). This DTC may be set alone or in combination with P2105.
Possible Causes:
Software incompatibility issue
Damaged PCM
the test for this code askes if the vehicle shifts into 4x4 or not. if you answer yes it says to refer to a test for no problem found. that test will run you in circles. I've never had luck using those test.
If you answer no it refers me to transfer case diagnostic. this vehicle does not have a transfer case.
P2104
Throttle Actuator Control (TAC) System - Forced Idle
The TAC system is in the failure mode effects management (FMEM) mode of forced idle.
This DTC is an informational DTC and may be set in combination with a number of other DTCs which are causing the FMEM. Diagnose other DTCs first
I've followed the test for this code with not luck.
Ask me any question I may have left some info out. a lot of stuff I've gone over.
Thanks
Chris