TM 10-3930-675-24-1
TROUBLESHOOTING PROCEDURES (NON-ERROR CODE) - CONTINUED
0007 00
Table 2. Electrical Troubleshooting Procedures (Non-Error Code) - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
26.Multiple Boom or Tophandler Functions Not
4. Check voltage (24) at X180
a. If voltage is 6V or less,
Working (Multiple Error Codes) - Continued.
pin 15 with the ignition on.
unplug X188, turn the
Checking the common 24V
ignition off, then back on
output from ECU 791
after 3 minutes. Recheck
connector 2 pin 10, any short
voltage.
to ground causes the voltage
b. If the voltage (24V) returns to
to drop to 6V or less (WP
X180
pin
15,
check
0048 00-26).
continuity of each pin J, K, L,
M, N, and P of the loose part
of X188 to ground (WP 0048
00-26).
c. If voltage (24V) does not
return, unplug X189, turn the
ignition off, then back on
after 3 minutes. Recheck
voltage.
d. If the voltage (24V) returns to
X180
pin
15,
check
continuity of each pin A, B,
C, D, J, K, L, M, N, and P of
the loose part of X189 to
ground (WP 0048 00-26).
e. If continuity to ground is
found at any pin(s), follow
the circuit of the pin/wire to
the component it goes to.
Unplug the component and
recheck for continuity to
ground. Replace grounded
harness (WP 0048 00-26).
5. Check voltage (24) at X180
a. If voltage is 6V or less,
pin 13 with the ignition on.
unplug X188, turn the
Checking the common 24V
ignition off, then back on
output from ECU 791
after 3 minutes. Recheck
connector 3 pin 10; any short
voltage.
to ground causes the voltage
b. If the voltage (24V) returns to
to drop to 6V or less (WP
X180
pin
13,
check
0048 00-27).
continuity of each pin A, B,
C, D, E, F, G, and H of the
loose part of X188 to ground
(WP 0048 00-27).
0007 00-63
