IK1200261 - Battery Box Located Clean Power Fuses for the IDM (Injector Drive Modul... Page 1 of 4

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Title: Battery Box Located Clean Power Fuses for the IDM (Injector Drive
Module), ECM (Engine Control Module), and TCM (Transmission Control
Module) Failing
Applies To: DLC II (EGR) International Engines

DESCRIPTION
The following procedure provides guidance if a truck, tractor or bus is experiencing hard start,
no start, erratic engine operation, or transmission shifting issues and the engine or
transmission fault codes indicate problems with power to the module.

SYMPTOMS



Hard start
No start

PARTS INFORMATION
Service replacement part number varies based upon vehicle platform, build date, engine, and transmission
configuration. Utilize the VIN parts breakdown inside the Service Parts Catalog. (Figure 1 shows a typical
jumper cable assembly).
The newly released jumpers built with copper beryllium terminals have been released in the parts system. All of
the old jumper harnesses have been purged from the PDC's. So, if you order a new jumper harness from the
PDC, you will get the updated harness.

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IK1200261 - Battery Box Located Clean Power Fuses for the IDM (Injector Drive Modul... Page 2 of 4

TROUBLESHOOTING
1. Pull fault codes from both the engine and transmission. Hard start / no start issues can be a result of
problems with power to the ECM, IDM, or TCM (not applicable for manual transmissions). The
transmission controls a crank inhibit relay that will inhibit cranking if the transmissions interlocks (such as
being in neutral) are not satisfied, the TCM does not have adequate power, or if active fault codes exist
that are deemed necessary to resolve prior to starting the vehicle.
2. Inspect all fuse holders inside the battery box for spread fuse holder terminals, the fuse blades not fitting
securely inside the mating terminals, evidence of damage to the terminals (Figure 2), or damage to the
fuse itself (Figure 3). If the fuse holder(s), terminals, and fuse(s) appear good, and the fuse fits securely
inside the holder, then further diagnostics and troubleshooting will be required.

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3. If evidence of a damaged jumper cable assembly is found, it will need to be replaced with a new jumper
cable assembly as specified in the parts information section. Two improvements have been implemented
to insure the integrity of these connections. July 2007: Manufacturing process change to prevent the fuse
holder terminals from being spread during the assembly and end of line testing. Dec 2007: The terminals
were changed from tin plated copper to copper beryllium. The copper beryllium terminals provide an
improvement in their ability to retain spring force on the fuse blades as well as having a higher resistance
to thermal cycling.

OTHER RESOURCES


SFN 08-17

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