DTC 41

Code 41 Chart:

Code 41 Wiring Diagram:

CIRCUIT DESCRIPTION:

Due to the Electronic Control Module (ECM) being used for different engines, it is necessary for the engine application to be selected. This is done by leaving B12 and D3 open for a six cylinder engine. A Code 41 will set if the reference pulses are not equal to a value selected within the Programmable Read Only Memory (PROM) when engine rpm's are below 2000. This code may set if the incorrect PROM is installed into the ECM.


NOTE: Because of all the possible color code combinations used on electrical wiring diagrams, always refer to ECM CONNECTOR IDENTIFICATION under ELECTRICAL AND ELECTRONIC WIRING DIAGRAMS for correct color code identification of circuit.