Detroit Diesel EPA07 Series 60 DDEC VI Troubleshooting Manual page 795

109.1 SPN 3511/FMI 3
This diagnosis typically is Multiplexer 3, Channel 1 or 2 has a short or open circuit high.
109.1.1 Channel 1
Multiplexer 3 Channel 1, shorted high will set if the input voltage from either the Intake Manifold
Temperature Sensor, Engine Oil Temperature Sensor, Engine Coolant Temperature Sensor or
Engine Fuel Temperature Sensor exceeds 2.97 volts, which may be caused by a short circuit, or
more likely an open circuit. This is an information code only indicating a default value will
be used for the other sensor inputs.
109.1.2 Channel 2
Multiplexer 3 Channel 2, shorted high will set if the input voltage from the Barometric Pressure
Sensor exceeds 2.97 volts, which may be caused by a short circuit, or more likely an open circuit.
This is an information code only indicating a default value will be used for the sensor input.
All information subject to change without notice.
Copyright © 2007 DETROIT DIESEL CORPORATION
SERIES 60 DDEC VI TROUBLESHOOTING GUIDE
109-3