Code 41 - Cylinder Select Error

Due to the same ECM being used for different engine applications, it is necessary to ground selected pins in the ECM. For V8 applications, terminal "D-3" should be grounded. Code 41 will set if the reference pulses are not equal to a value selected within the PROM when engine RPM is below 2000.

Fig 1: Code 41 Flow Chart, Cylinder Select Error

Fig 2: Code 41 Flow Chart, Cylinder Select Error

Fig 3: Code 41 Schematic, Cylinder Select Error