Eldorado V8-350 5.7L DSL (1984)
Fuel Injector: Technical Service Bulletins
DFI/EFI Fuel Injector - Electrical Damage
NO.:
84-I-8
DATE:
January, 1984
GROUP:
0
SUBJECT:
DFI/EFI FUEL INJECTOR ELECTRICAL DAMAGE
DFI/EFI fuel injectors may be permanently damaged when subjected to abnormal current loads during diagnosis. While the ECM will not allow enough
current to damage the injector during vehicle operation, full battery voltage must not be applied across injector terminals for diagnosis. Full battery
voltage applied across the injector will destroy the solenoid coil within half a second.
To aid in diagnosis of injector system operation, an injector harness tester such as one available from Burroughs Tool & Equipment Corporation as tool
number BT8320 can be used to differentiate between an electrical or fuel system condition. However, its use should not entirely supersede the diagnostic
procedures recommended in Serviceman Bulletin 83-65 and the appropriate Service Information Manuals. This tool is a substitute for an unpowered test
light. The primary benefit of this tool is that it can be directly plugged into the injector harness to allow diagnosis without the assistance of a second
person to crank the engine.
The tool information, while obtained from a source believed to be reliable, is being forwarded as a matter of information only. There may be additional
manufacturers of such equipment. Cadillac does not endorse, indicate any preference for, or assume any responsibility with respect to the products,
equipment, or services mentioned therein or for any other such item which may be available from other sources.