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Massey 8450 engine code
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c_mayer
Posted 11/5/2026 13:10 (#11795421 - in reply to #11795415)
Subject: RE: Massey 8450 engine code


Jeffersonville, OH
Took me 18 seconds, your dealer needs a clue. Man some of this is ridiculous. EEM3 program, work offline, File, show error descriptions.

9030 is a ECU Main relay...check ground and powers, but most likely the ECM us failing.

Chris



7.2.9 241, SPN 9030, FMI 3, Short circuit to BAT+, ECU main relay 1
Description:
High and low power outputs of the ECU are supplied via the main relays (FET transistors). When short circuit to ground or battery + is detected, Main relays (MR) will automatically shut off. To ensure that the short circuit to GND or Bat+ is either temporary or permanent, the MR’s shall be reactivated after delay time. If monitoring system detects continuously short circuit to ground or bat+ MR’s will be shut off.



Reaction in EEM:
FC is stored and warning is activated. CAN message indicate active fault.





Solution:
Switch the ignition key off, wait few seconds and switch the ignition key again on, if the fault occurs again during next driving check following paths:



· Check (from the high pressure pump) the MPROP wiring terminal surfaces and the pins for possible oxidation in connection surfaces (see 13.2) and (see 13.4.1).



· Measure the low side (hp 2) from wiring terminal to engine ground, to see if there is a short circuit to bat+ (see 13.4.1).



· Measure between the low side (hp 2) from wiring terminal to ECU connector 3 (pin 3.10), to see if there is a fault cable (see 13.4.1).



· Measure between the high side (hp 1) from wiring terminal to ECU connector 3 (pin 3.09), to see if there is a fault cable (see 13.4.1).



Solution2:
· Check the ECU operation with another EEM3 controller (See the instructions for ECU replacement in section 9). If the system is functional with the replacement ECU, then the original ECU is defective.



NOTE: If EEM3 controller from another tractor is used, FC 451 or 452 will be activated, because of engine S/N mismatch or engine specification mismatch. If the controller needs to be replaced, the new EEM3 controller needs to be coupled to the current Engine Identification Module (IDM) using the Service Tool.
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