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
12.Front Windshield Wiper Motor Not Working 7. Remove front windshield a. If no voltage (24V) is found at
- Continued.
wiper motor from front of cab
XS4 pin 3 or 4, check
(WP 0157 00). Inspect wiper
continuity of wires 276, 277,
motor for damage and wiring
and 278 (WP 0048 00-38).
connections. Unplug wiper b. Check ground connection at
motor and check voltage (24V)
wiper motor. Check continuity
at XS4 pin 3 and 4 with the
of wires 279, A279, and
ignition on while operating the
ground connection at 37-1
front wiper control switch to
(WP 0048 00-38).
the CONTINUOUS position. c. Repair or replace damaged
wires or connectors (WP 0113
00).
d. Replace damaged or faulty
front wiper motor (WP 0158
00).
13. Rear Windshield Wiper Motor Not Working. 1. Check circuit breaker F15 for a. Reset circuit
breaker
as
trip.
required.
b. If breaker does not reset, use
the wiring diagram to check
circuit for short to ground (WP
shorted or grounded harnesses
(WP 0113 00).
c. Replace damaged or faulty
circuit breaker (WP 0074 00).
2. Inspect wiper arm for binding a. Correct binding wiper arm
or damage.
(WP 0158 00).
b. Replace damaged wiper arm
(WP 0158 00).
3. Check voltage (24V) at X9 pin a. If no voltage (24V) is found at
1, 2, and 3 with the ignition on
X9 pin 3, check circuit breaker
while operating the rear wiper
F15 and continuity of wires
control switch. There should
A89 and A89A (WP 0048 00-
be voltage (24V) at pin 1
38).
(intermittent voltage) and 2 for
intermittent wiper.
0007 00-41
