Navistar INTERNATIONAL DT 466 User Manual

390 7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS
DTC 624 – Field default active
Condition: Field d efau lts active.
Symptoms: Low power (lowest rating in engine class) and vehicle features not functioning.
Possible Causes: Programmable parameters for the ECM incorrectly programmed in mod
ule.
Actions:
Program ECM
DTC 631 – Read Only Memory (ROM) self-test fault
Condition: ROM self-test fault
Symptoms:
No start.
Possible Causes: Internal ECM problem.
Actions:
Replace the ECM.
DTC 632 – Random Access Memory (RAM) - CPU s elf-test fault
Condition: RAM Memory - CPU self-test fault.
Symptoms:
No start.
Possible Causes: Internal ECM problem.
Actions:
Replace the ECM.
DTC 655 – Programmable parameter list
level incompatible
Condition:
Programmable parameter list level incompatible.
Symptom s: N o start or run in field defaults.
Possible Causes: Programming problem or internal EC
M problem.
Actions:
Program ECM. May require ECM replacement.
DTC 661 – RAM programmable parameter list corrupt
Condition:
RAM programmable parameter list corrupt.
Symptom s: N o start or run in field defaults.
Possible Causes: Internal ECM problem.
Actions:
Program ECM. May require E
CM replacement.
DTC 664 – Calibration level incompatible
Condition: Calibration level incompatible.
Symptom s: N o start or run in field de
faults.
Possible Causes: Programmable problem or internal ECM problem.
Actions:
Program ECM
DTC665–Programmab
le parameter memory content corrupt
Condition:
Programmable parameter memory content corrupt.
Symptom s: N o start or run in field defaults.
Possible Cau se s
:
Interna l ECM pro
blem.
Actions:
Replace the ECM.
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.

Navistar INTERNATIONAL DT 466 Specifications

General

Brand	Navistar
Model	INTERNATIONAL DT 466
Category	Engine
Language	English