Vanguard BIG BLOCK M540000 - Engine Control Module (ECM) - EFI

9. Remove the 2 fasteners securing the fuel pump module
support bracket to thevalley air guides (A, Figure 63).
Set mounting bracket aside.
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Engine Control Module (ECM) - EFI
Some engines may have anECM that is mounted externally
to the engine.
1. Remove the 2 fasteners (A, Figure 64) and wire harness
ground wire (B) that secure the ECM to the support
bracket.
2. Remove the J1 (GRAY) (C) and J2 (BLACK) (D) harness
connectors from the ECM by depressing the connector
tab and pulling away from the ECM.
NOTE: Take note of the location of the J1 and J2 ECM
connectors to maintain correct orientation during reassembly.
64
3. Remove ECM from engine and set aside.
63