ENGINE ELECTRICAL 315
14. Disconnect Inlet Air Heater (IAH) cable(s).
15. Pull up on intake air heater wiring harness to
disengage two tie down locations from ECM /
IDM bracket.
Figure 474 Intake air heater relay bracket
1. Heater relay bracket bolt, M6 x 20 and nut, M6
2. Heater relay bracket nuts, M8 (2)
16. Remove two intake air heater mounting nuts (M8)
and heater relay bracket bolt (M6 x 20) and nut
(M6).
17. Remove intake air heater bracket with harness
assembly.
NOTE: Heater relay bracket and heater wiring
harness are removed as an assembly. There is no
need to disconnect the air heater wiring harness
connectors from the air heater relays.
Figure 475 ECM, IDM, and EGR drive module
assembly (side v iew)
1. Module assembly mounting stud bolts (2)
18. Remove two module assembly to engine
mounting stud bolts on right side (M8 x 45/19).
19. Remove two module assembly mounting bolts on
left side (M8 x 45).
Figure 476 ECM, IDM, and EGR drive module
assembly
EGES-265-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2009 Navistar, Inc.