TB-9-3950-253-13-P
PALLETIZED LOAD SYSTEM TRUCK, M1075 and M1075A1 (PLS) AND HEAVY EXPANDED MOBILITY TACTICAL TRUCK, M1120, M1120A2, AND M1120A4 (HEMTT), ENHANCED CONTAINER HANDLING UNIT (E-CHU)
TECHNICAL BULLETIN; OPERATOR AND FIELD MAINTENANCE, INSTALLATION INSTRUCTIONS, AND REPAIR PARTS AND SPECIAL TOOLS LIST
JULY 2009
TB-9-3950-253-13-P - Page 213 of 704
0019-33
Change 1
TB 9-3950-253-13&P
0019
Table 2. Enhanced Container Handling Unit (E-CHU).
ERROR
CODE
DESCRIPTION
COMMENTS/
PROBLEM
LOCATION
POSSIBLE
ACTION
TROUBLESHOO-
TING REFERENCE
0
Low Power
Supply Voltage
Is Below 16
Volts
Truck
Check alterna-
tor output
Refer to
No Stow-
age Function
Mal-
function
1
I/O Fuse
Fuse Blown Due
To Short Circuit
On 24V Supply
To P4:2 Stowage
guide sensors
(ski ramp sen-
sors)
P5:2 (Angle
Sensor)
P6:2 (Middle
Frame 134 in. &
Hook Arm 77 in.
Sensors)
Space 4000 ST
Box
Fuse Will Auto
Reset After Fault
Rectified
Refer to
No Stow-
age Function
Mal-
function
2
Fuse
Fuse Blown Due
To Short Circuit
On Output P9
(Stow Harness)
Space 4000 ST
Box
Fuse Will Auto
Reset After Fault
Rectified
Refer to
No Stow-
age Function
Mal-
function
5
Column Fuse
Fuse Blown Due
To Short Circuit
On P5 (Angle
Sensor)
Space 4000 ST
Box
Fuse Will Auto
Reset After Fault
Rectified
Refer to
No Stow-
age Function
Mal-
function
6
Terminal Fuse
Fuse Blown Due
To Short Circuit
On P3 (Service
Terminal Con-
nection)
Space 4000 ST
Box
Fuse Will Auto
Reset After Fault
Rectified
Refer to
No Storage
Function
Malfunc-
tion
7
CAN Fuse
Fuse Blown Due
To Short Circuit
On The CAN
Bus (5v Missing)
Any Position
Fuse Will Auto
Reset After Fault
Rectified
Refer to
No Stow-
age Function
Mal-
function
8
Internal Error
Internal Error On
Stowage Con-
trol Box
Space 4000 ST
Box
Replace Space
4000 ST Box If
Error Repeats
Refer to
Stowage
Movement Is Irregu-
lar
Malfunction
9
Pressure Sensor Values From
Angle Sensor
Not Legal
Space 4000 ST
Box
Check Connec-
tion/Setting/
Replace Sensor
Refer to
No Stow-
age Function
Mal-
function
10
Parameter
Internal Parame-
ter Error -
Default Parame-
ters Have Been
Restored
Space 4000 ST
Box
Check Parame-
ters/Reset/
Replace Space
4000 ST Box
Refer to
Stowage
Movement Is Irregu-
lar
Malfunction
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