Navistar International DT 466 Diagnostic/Troubleshooting Manual page 492

488 7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS
IDM PWR Diagnostic Trouble Codes
DTC 525 = IDM fault
DTC 523 = IDM V voltage low
IGN
DTC 533 = IDM relay voltage high
DTC 534 = IDM relay voltage low
1
Connector 9260 is a 2-wire connector usually located in the battery box. Pin A is the ground connection for the ECM
and IDM. See truck Chassis Electrical Circuit Diagram Manual for complete chassis side ECM and IDM ground circuit
information.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.