TM 9-2320-363-20-1
Section 4
TROUBLESHOOTING CHARTS
FLASH CODE:
55
DDR DISPLAY:
J1939 DATA LINK FAILURE
SAE J1587 CODE:
SID: 232 FMI: 12
Indicates that the J1939 (High Speed Powertrain) data link is no longer allowing the ECM to transmit data. This
diagnostic code is typically:
(1)
No other J1939 device is connected and/or powered up on the communications network.
(2)
Either or both of the data link circuits are open at some point in the network.
(3)
Either of both of the data link circuits are shorted to ground at some point in the network.
(4)
Either or both of the data link circuits are shorted to battery (+) at some point in the network.
(5)
The pair of data link circuits are shorted together.
(6)
One or both of the network termination resistors are not connected.
FLASH CODE:
56
DDR DISPLAY:
J1587 DATA LINK FAILURE
SAE J1587 CODE:
SID: 250 FMI: 12
Indicates that the J1587 (diagnosiic) data link is no longer allowing the ECM to transmit data, This diagnostic
condition is typically:
(1)
Either or both of the data link circuits are open at some point in the network.
(2)
Either or both of the data link circuits are shorted to ground at some point in the network.
(3)
Either or both of the data link circuits are shorted to battery (+) at some point in the network.
(4)
The pair of data link circuits are shorted together.
FLASH CODE:
57
DDR DISPLAY:
J1922 DATA LINK FAILURE
SAE J1587 CODE:
SID: 249 FMI: 12
Indicates that the J1922 (Low Speed Powertrain) data link is no longer allowing the ECM to transmit data. This
diagnostic condition is typically:
(1)
Either or both of the data link circuits are open at some point in the network.
(2)
Either or both of the data link circuits are shorted to ground at some point in the network.
(3)
Either or both of the data link circuits are shorted to battery (+) at some point in the network.
(4)
The pair of data link circuits are shorted together.
FLASH CODE:
58
DDR DISPLAY:
TORQUE OVERLOAD
SAE J1587 CODE:
PID: 092 FMI: 0
Indicates that the engine operating torque has exceeded a calibratible maximum limit.
3-345.28 Change 3
