7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS 387
X3–3 to 87 (V
IGN
- power
relay)
<5Ω If > 5 Ω, check connections or open between ECM and V
IGN
power
relay. See truck Chassis Electrical Circuit Diagram Manual for
relay and fuse locations.
ECM PWR Diagnostic Trouble Codes
DTC 112 = Internal voltage power out of range high > 23 V
DTC 113 = Internal voltage power out of range low < 7 V
DTC 626 = Unexpected reset fault
1
Connector 9260 is a 2-wire connector usually located in the ba t tery box. Pin A is the grou nd connection for the ECM
and IDM. See truck Chassis Electrical Circuit Diagram M
anual for complete chassis side ECM and IDM ground circuit
information.
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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