Detroit Diesel EPA07 Series 60 DDEC VI Troubleshooting Manual page 779

106.1 SPN 3509/FMI 3
This diagnosis typically is Multiplexer 1, Channel 1 or 2 has a short or open circuit high.
106.1.1 Channel 1
Multiplexer 1 Channel 1, shorted high will set if the input voltage from either the DOC Temp In,
DOC Temp Out or DPF Temp Out 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.
106.1.2 Channel 2
Multiplexer 1 Channel 2, shorted high will set if the input voltage from the Turbo Compressor
Inlet 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 sensor input.
All information subject to change without notice.
Copyright © 2007 DETROIT DIESEL CORPORATION
SERIES 60 DDEC VI TROUBLESHOOTING GUIDE
106-3