This instruction show you guide on how to solve Detroit DD13 engine SPN 84 FMI 3 MCM vehicle speed sensor open circuit.
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2025 Detroit Diesel Diagnostic Link DDDL 8.21 8.09 Free Download
Vehicle speed sensor circuit failed high.
MONITORED PARAMETER:
Vehicle Speed Sensor (VSS).
TYPICAL ENABLING CONDITIONS:
Always Enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Always Enabled
TYPICAL DURATION:
2 seconds
DASH LAMPS:
MIL
ENGINE REACTION:
None
VERIFICATION:
Engine Idle (1 minute).
PROBABLE CAUSES:
1 Vehicle speed sensor.
2 Wiring between vehicle speed sensor and ECM.
More repair cases for Detroit Diesel engines,please refer to:Detroit Diesel Engine Repair
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