MTU 12 V 4000 Lx4 Operating Instructions Manual page 119

188 – AL CAN2 Bus Off
Yellow alarm.
Associated parameter 2.0500.688
Cause
CAN controller 2 is in "Bus-Off"
status. Automatic switching to
CAN bus 1. Bus nodes (ECU,
SAM or EMU) faulty.
189 – AL CAN2 Error Passive
Yellow alarm.
Associated parameter 2.0500.689
Cause
CAN controller 2 has indicated a
warning. Some reasons are, for
example, no corresponding
node, minor malfunctions or
temporary bus overload.
190 – AL EMU Parameter Not Supported
Red alarm.
Associated parameter 2.0500.690
Cause
EMU parameters are not
supported.
201 – SD T-Coolant
Red alarm. Engine stop.
Associated parameter 1.8004.570
Cause
Coolant temperature sensor at
engine outlet defective, short
circuit or wire break.
204 – SD Level Lube Oil
Red alarm. Engine stop.
Associated parameter 1.8004.602
Cause
Engine oil level sensor defective,
short circuit or wire break.
Corrective action
u Check operation of nodes and cabling.
Corrective action
u Check operation of nodes and cabling.
Corrective action
u Contact Service (configuration fault).
Corrective action
u Check sensor and cabling (B6.1), replace if necessary. Fault is
rectified following engine restart.
Corrective action
u Check sensor and cabling (B24), replace as necessary. Fault is
rectified following engine restart.
MS15027/00E 2013-10 | Troubleshooting | 119