Basler Electric DGC-2020HD - Manual (Page 391)

9469300990 Rev B 381
Diagnostic Trouble Codes
DGC-2020HD controllers obtain diagnostic engine information from a compatible engine control unit
(ECU). The DGC-2020HD receives an unsolicited message of a currently active diagnostic trouble code
(DTC). Previously active DTCs are available upon request. Active and previously active DTCs can be
cleared on request.
Active and previously active DTCs can be viewed through BESTCOMSPlus ® by using the Metering
Explorer to expand the J1939 ECU tree or through the front panel display by navigating to Metering,
J1939 Active DTC.
Table 99 lists the diagnostic information that the DGC-2020HD obtains over the CAN interface.
Table 99. Diagnostic Information Obtained Over the CAN Interface
Parameter
Transmission
Repetition Rate
Active diagnostic trouble code 1 s
Lamp status 1 s
Previously active diagnostic trouble code On request
Request to clear active DTCs On request
Request to clear previously active DTCs On request
DTCs are reported in coded diagnostic information that includes the Suspect Parameter Number (SPN),
Failure Mode Identifier (FMI), and Occurrence Count (OC). All parameters have an SPN and are used to
display or identify the items for which diagnostics are being reported. The FMI defines the type of failure
detected in the subsystem identified by an SPN. The reported problem may not be an electrical failure but
a subsystem condition needing to be reported to an operator or technician. The OC contains the number
of times that a fault has gone from active to previously active.
For certain DTCs, if the DGC-2020HD recognizes a pair of SPN and FMI numbers, it displays a single
string as listed in Table 100. If the DGC-2020HD recognizes an SPN in Table 100, but the FMI does not
match the FMI in Table 100, then it displays the string from Table 100 corresponding to the table entry
where the FMI is # and a second string corresponding to the FMI number listed in Table 101. For
example, if the DGC-2020HD receives SPN 29 and FMI 13, it displays ACCEL PEDAL 2 POSITN and
OUT OF CALIBRATION. If the DGC-2020HD does not have descriptive information about an SPN and
FMI that was received, the description will display as “NO TEXT AVAILABLE”.
Table 100. DTCs Displayed by the DGC-2020HD
SPN FMI String Displayed Description
28 3 Throttle Volt HI Throttle Voltage High
28 4 Throttle Volt LO Throttle Voltage Low
28 14 Throttle Volt OOR Throttle Input Voltage Out of Range
29 3 Throttle Volt HI Throttle Voltage High
29 4 Throttle Volt LO Throttle Voltage Low
29 14 Throttle Volt OOR Throttle Input Voltage Out of Range
29 # ACCEL PEDAL 2 POSITN Caption string for accelerator pedal 2 position
52 15 INTERCOOLER TEMP HI Engine Intercooler Temperature is above the HIGH threshold
91 3 Thr Pos Sns Volt HI Throttle Position Sensor Input Voltage (High)
91 4 Thr Pos Sns Volt LO Throttle Position Sensor Input Voltage (Low)
91 14 Thr Pos Sns Volt OOR Throttle Voltage (Out of Range)
94 1 FUEL DELIV PRS LO LO Engine Fuel Delivery Pressure is below the LOW LOW
threshold
DGC-2020HD Diagnostic Trouble Codes