TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
14. MAIN FRAME DOES NOT UNLOAD IN MANUAL MODE.
INITIAL SETUP
Tools and Special Tools
Equipment Condition
Multimeter (ANURM105C)
Engine turned off (TM 9-2320-279-10)
Tool Kit, General Mechanic's: Automotive
Parking brake applied (TM 9-2320-279-10)
(SC 5180-90-N26)
Wheels chocked (TM 9-2320-279-10)
Personnel Required
Two
START
1.
TEST OPTIONS
KNOWN INFO
Visual inspection.
Does the main frame
Error Code, EC 02 and/or
unload with either
EC 17.
REASON FOR QUESTION
the cab control or
POSSIBLE PROBLEMS
the remote control?
To determine if the fault
is located in the remote
Relay no. K5 faulty.
control circuit, cab
Cab control box faulty.
circuit, or the part of the
Linking harness faulty.
circuit common to both.
Main junction box wiring
faulty.
Main frame UNLOAD
solenoid harness faulty.
Function switch faulty.
MODEL A, Go
MODE SELECT switch
to Step 5.
NO
faulty.
MODEL B, Go
Remote control unit faulty.
to Step 16.
Remote control cable
faulty.
Remote linking harness
YES
faulty.
