Basler Electric DGC-2020ES - Manual (Page 231)

9469200990 Rev C 223
Diagnostic Trouble Codes
Diagnostic engine information is obtained from a compatible engine control unit (ECU). The DGC-2020ES
will receive 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. Table 35
lists the diagnostic information that the DGC-2020ES obtains over the CAN interface.
Table 35. 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-2020ES recognizes a pair of SPN and FMI numbers, it displays a single
string as listed in Table 36. If the DGC-2020ES recognizes an SPN in Table 36, but the FMI does not
match the FMI in Table 36, then it displays the string from Table 36 corresponding to the table entry
where the FMI is # and a second string corresponding to the FMI number listed in Table 37. For example,
if the DGC-2020ES receives SPN 29 and FMI 13, it displays ACCEL PEDAL 2 POSITN and OUT OF
CALIBRATION. If the DGC-2020ES does not have descriptive information about an SPN and FMI that
was received, the description will display as “NO TEXT AVAILABLE”.
Table 36. DTCs Displayed by the DGC-2020ES
SPN FMI String Displayed Description
27 # EGR1 VALVE POSITN Caption Indicating EGR1 Valve Position
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
51 # ENG THROTTLE POSITN Caption Indicating Engine Throttle Position
52 15 INTERCOOLER TEMP HI Engine Intercooler Temperature is above the HIGH threshold
69 # 2 SPEED AXLE SWITCH Caption Indicating Two Speed Axle Switch
70 # PARKING BRAKE SWITCH Caption Indicating Parking Brake Switch
84 # VEHICLE SPEED Caption string for vehicle speed signal
91 # ACCEL POSITION Caption string for Accelerator Position
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)
DGC-2020ES Diagnostic Trouble Codes