488 7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS
IDM PWR Diagnostic Trouble Codes
DTC 525 = IDM fault
DTC 523 = IDM V
IGN
voltage low
DTC 533 = IDM relay voltage high
DTC 534 = IDM relay voltage low
1
Connector 9260 is a 2-wire con nector usually locate d in the battery box. Pin A is the ground connection fo r th e E CM
and IDM. See truck Chassis Electrical Ci rcuit Diagram Manual 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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