Quote:
Originally Posted by Bon Voyage
I have a warning light and got this code from the flashing and beeping through the dash. 5 3 9. Anyone know how I can interpret this code?
The warning light came on and off a few times and has reduced power when the light is on. Any help is appreciated.
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539 Transient Suppressor Circuit
Cummins ISL & ISC Fault Codes:
Found answer ->
HERE
The transient suppressor absorbs the extra current created when the injection control valve closes after an injection event. Without the transient suppressor, high voltage would be transmitted back into the ECM and damage the pump driver circuits.
The transient suppressor extends from the trunk of the engine harness and is mounted with a p-clip to the engine block. It is a small copper colored cylinder with a red and a black wire extending from one end. It is located just below where the injection lines connect to the fuel pump. The injection control valve is located at the rear of the fuel injection pump, on the top of the distributor, and below the accumulator.The only way to check the Suppressor is to cut it out off the engine harness, We remove and replace the suppressor. If the suppressor fails too long it can cause the ecm and ICV to also fail.