TM 9-3950-253-13&P
FIELD MAINTENANCE
TOTAL STOP OF SYSTEM - ERROR CODE 20
INITIAL SETUP:
Tools and Special Tools
Equipment Condition
Tool Kit, General Mechanic s (WP 0118, Table 2,
Vehicle parked on level ground, in neutral gear
Item 2)
with parking brake applied
(PLS: TM 9-2320-364-14&P,
HEMTT: TM 9-2320-326-14&P)
References
NOTE
When ignition switch is turned on after battery disconnect switch has been turned off and
back on, error codes 1 and 24 may alternately display for one minute. This error code
indicates that temporary settings were lost while battery disconnect switch was off, and is
consistent with normal operation.
TROUBLESHOOTING PROCEDURE
SYMPTOM
ERROR CODE 20
MALFUNCTION
Faulty control box interface loom.
CORRECTIVE ACTION
1.
Set ignition switch and battery disconnect switch to ON position (PLS: TM 9-2320-364-14&P,
HEMTT: TM 9-2320-326-14&P).
2.
Check for 24V on pin 2 of P12 in relay box.
a.
If 24V found, proceed to Step 6.
b.
If 24V not found proceed to Step 3.
3.
Set ignition switch and battery disconnect switch to OFF position (PLS: TM 9-2320-364-14&P,
HEMTT: TM 9-2320-326-14&P).
4.
Disconnect loom from hydraulic control box.
5.
Measure resistance between pin 2 on P12 in relay box and pin F on control box interface loom
connector.
a.
If resistance is >200 Ohms, replace control box interface loom.
b.
If resistance is <200 Ohms, refer to vehicle TM (PLS: TM 9-2320-364-14&P,
HEMTT: TM 9-2320-326-14&P).
6.
Set ignition switch and battery disconnect switch to OFF position (PLS: TM 9-2320-364-14&P,
HEMTT: TM 9-2320-326-14&P).
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03/15/2011Rel(1.10)root(tswp)wpno(T582046)