TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
20. TRANSIT VALVES INOPERATIVE, ERROR CODE 19, (MODEL B ONLY).
INITIAL SETUP
Tools and Special Tools
Equipment Condition
Tool Kit, General Mechanic's: Automotive
BAP loaded on the CBT
(SC 5180-90-N26)
Engine turned off (TM 9-2320-279-10)
Parking brake applied (TM 9-2320-279-10)
Wheels chocked (TM 9-2320-279-10)
START
TEST OPTIONS
1.
KNOWN INFO
Voltage Test.
Are 22-28 volts measured
Error Code, EC 01 and/or
at the cab interface
REASON FOR QUESTION
EC 19.
wiring harness connector
Power to activate the
POSSIBLE PROBLEMS
(J2), position "2" and
transit valves is supplied
position "3"?
from the cab digital control
Cab digital control box
box to the digital controller
faulty.
wiring harness via this
Cab interface wiring
harness. Faults in this
harness faulty.
harness will prevent
Digital controller wiring
operation from the cab
harness faulty.
digital control box.
Transit valve faulty.
Digital control box faulty.
Repair or replace
cab interface
NO
wiring harness
(4-71.2).
YES
4-414.10
24
Change 1
