“DETROIT DIESEL DIAGNOSTIC LINK DDDL 8.20 SP1 2025” has been added to your cart. View cart
The pedal message is used to calculate fuel injection.
The J1587 and J1939 serial data lines are used as the standard communication link for on-board vehicle instrumentation, off-board service diagnostics and fleet management.
The (VECU) Vehicle Electronic Control Unit is linked to the Engine Control Module (ECM) via these data lines.
Conditions for diagnostic trouble code (DTC):
1) The accelerator pedal is not connected to the VECU
Probable cause
1) Accelerator pedal
2) Vehicle Control Unit (VECU)
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