7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS 389
ECM Self Diagnostic Trouble Codes (DTCs)
DTC 111 – No errors detected - flash code only
Condition: No DTC conditions detected
Note:
Can only determine if ECM has detected continuous DTCs detected during an
Output Circuit Check. DTCs generated during an On-Demand Test such as KOER
Standard Test can only be accessed by an EST.
DTC 613 – ECM / IDM software not compatible
Condition: ECM / Injector Drive Module (IDM) softw are is incompatib
le
Symptoms:
Possiblenostart–lowpower
Possible Ca uses: Field replacement ECM or IDM mismatch
Actions:
Program ECM or IDM. May require ECM or IDM replacement
.
DTC 614 – EFRC / ECM configuration mismatch
Condition: Engine Family Rating Code (EFRC) / ECM configuration mis match
Symptoms:
Possible hard start and no start or low power condition
Possible Ca uses: Wrong EF RC selected for the ECM strat eg y programmed in the mo du le .
Actions:
Check EFRC and verify that it matches the ECM strategy level. Reprogram the
ECM or change the EFRC as required.
DTC 621 – Engine using mfg default rati
ng
Condition: Manufacturing defaults selected.
Symptoms: Very low power (25 hp).
Possible Causes: Programmable parameters for the EC
M were never programmed in module.
(Usually occurs in new vehicle o
rnewmodule).
Actions:
Program ECM.
DTC 622 – Engine using field default rating
Condition: Engine using field default ra
ting.
Symptoms: Low power (lowest rating in engine class) and vehicle features not working.
Possible Causes: Programmable parameters for the ECM incorrectly programmed in module.
Actions:
Program ECM.
DTC 623 – Invalid engine EFRC
Condition: Invalid EFRC
Symptoms:
Possible hard start and no start or low power condition.
Possible Ca uses: Wrong EF RC selected for the ECM strat eg y programmed in the mo du le .
Actions:
Check the EFRC and verify that it matches the ECM strategy level. Reprogram the
ECM or change the EFRC as necessary.
EGES-270-1
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
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