Fault Code Guide

J1939 Datalink Troubleshooting (SID 231)
MID SID FMI Problem Test Test Result Action
136 231 07 J1939 time out
NOTE: Fault
occurs if engine
retarder sends
message
incorrectly.
Check the driveline
retarder ECU and wires.
Freightliner SB 54-133
Check J1939 datalink and
driveline retarder ECU. Repair as
necessary.
136 231 08 J1939 time out
NOTE: Fault
occurs if engine
retarder sends
message
incorrectly.
Check engine ECU and
wires. Check J1939
datalink.
Freightliner SB 54-133
Check J1939 datalink and engine
ECU. Repair as necessary.
136 231 09 J1939 time out
NOTE: Fault
occurs if engine
retarder sends
message
incorrectly.
Check engine and
transmission ECUs and
wires. Check J1939
datalink.
Freightliner SB 54-133
Check J1939 datalink, engine
ECU, transmission ECU, and
wiring. Repair as necessary.
136 231 10 J1939 time out
NOTE: Fault
occurs if the
exhaust retarder
sends a message
incorrectly.
Check the engine ECU
and wires. Check the
J1939 datalink.
Freightliner SB 54-133
Check J1939 datalink and engine
ECU. Repair as necessary.
136 231 12 J1939 internal
error
Verify fault. Clear code from the
ECU memory. If fault persists,
replace the ABS ECU.
Table 14, J1939 Datalink Troubleshooting (SID 231)
Voltage Troubleshooting (SID 251)
MID SID FMI Problem Test Test Result Action
136 251 03 Overvoltage
Voltage to ECU
was too high for
more than 5
seconds.
Using Meritor PC
Diagnostics, check the
diagonal voltages with the
engine running at
governed speed, or
measure the voltage at the
batteries with the engine
running at governed
speed.
Voltage is 9.5 to 14
volts
Check for intermittent sources of
high voltage. Check condition of
charging system and batteries.
Verify fault.
Voltage is greater
than 14 volts.
Check charging system. Repair
as necessary.
Table 15, Voltage Troubleshooting (SID 251)
Meritor WABCO Pneumatic Antilock Braking System
(ABS)
42.00
ABS System Troubleshooting
Business Class M2 Workshop Manual, Supplement 2, June 2002 300/15