SPN 629 - FMI 12 (Fault Code 111)
SPN 629 - FMI 12 (Fault Code: 111)
SPN629 FMI12
CODES:
Fault Code: 111
PID(P), SID(S): S254
SPN: 629
FMI: 12/12
Lamp: RED
SRT:
REASON: Electronic Control Module Critical Internal Failure - Bad Intelligent Device or Component. Error internal to the electronic control module (ECM) related to memory hardware failures or internal ECM voltage supply circuits.
EFFECT: Engine may NOT start/ running.
Circuit Description:
The ECM has internal diagnostics that continuously run and check the internal memory.
Component Location:
The ECM is located on the fuel system side of the engine.
Conditions for Running the Diagnostics:
This diagnostic runs continuously when the keyswitch is in the ON position.
Conditions for Setting the Fault Codes:
This fault code is triggered when the internal ECM diagnostics detect a read or write error internal to the module.
Action Taken When the Fault Code is Active:
The ECM illuminates the red STOP ENGINE light immediately when the diagnostic runs and fails.
Conditions for Clearing the Fault Code:
The ECM will turn off the red STOP ENGINE light immediately after the diagnostic runs and passes.
Shop Talk:
Read More:
SPN 111 FMI 18 (Fault Code 197)
SPN 108 - FMI 4 (Fault Code 222)
Blog.Teknisi
SPN629 FMI12
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| ISB, ISC, and ISL Electronic Control Module |
CODES:
Fault Code: 111
PID(P), SID(S): S254
SPN: 629
FMI: 12/12
Lamp: RED
SRT:
REASON: Electronic Control Module Critical Internal Failure - Bad Intelligent Device or Component. Error internal to the electronic control module (ECM) related to memory hardware failures or internal ECM voltage supply circuits.
EFFECT: Engine may NOT start/ running.
Circuit Description:
The ECM has internal diagnostics that continuously run and check the internal memory.
Component Location:
The ECM is located on the fuel system side of the engine.
Conditions for Running the Diagnostics:
This diagnostic runs continuously when the keyswitch is in the ON position.
Conditions for Setting the Fault Codes:
This fault code is triggered when the internal ECM diagnostics detect a read or write error internal to the module.
Action Taken When the Fault Code is Active:
The ECM illuminates the red STOP ENGINE light immediately when the diagnostic runs and fails.
Conditions for Clearing the Fault Code:
The ECM will turn off the red STOP ENGINE light immediately after the diagnostic runs and passes.
Shop Talk:
- Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable fixes to the calibration stored in the ECM. If necessary, recalibrate the ECM.
- This fault code can only be caused by an internal ECM problem. Repairs are not possible for the ECM.
Read More:
SPN 111 FMI 18 (Fault Code 197)
SPN 108 - FMI 4 (Fault Code 222)
Blog.Teknisi
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