TM 5-3805-293-23-2
0023
Table 1. Cab Electrical Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
8. Rear Left Turn/Stop
4. Using digital multimeter, test for
Voltage Pulsing and Peaks
Lamp Does Not Operate
voltage between cab lower wiring
Between 18 and 26 Volts - Replace
in Both Turn and Stop -
harness connector P-C69 (WP
rear chassis wiring harness (WP
Continued
0009, Figure 46) terminal 37 and
0188).
terminal 29. Voltage should be
Connect the rear lamps harness con-
pulsing 18 to 26 volts.
nector AG-C4 (WP 0009, Figure 320)
to left tail light (WP 0177).
Connect the rear lamps harness con-
nector AG-C10 (WP 0009, Figure
399) to left tail light (WP 0177).
Proceed to step 5.
Voltage Less Than 18 Volts -
Replace cab lower wiring harness
(WP 0266).
Connect the rear lamps harness con-
nector AG-C4 (WP 0009, Figure 320)
to left tail light (WP 0177).
Connect the rear lamps harness con-
nector AG-C10 (WP 0009, Figure
399) to left tail light (WP 0177).
Connect the rear lamps harness con-
nector AG-C20 (WP 0009, Figure 311)
to rear chassis wiring harness con-
nector FA-C29 (WP 0009, Figure 310)
(WP 0178).
Proceed to step 5.
5. Turn control indicator switch to
Rear Left Turn Signal Does Not
position SER. DRIVE, turn signal
Operate - Repeat troubleshooting
switch (TM 5-3805-293-10) to the
from the beginning.
left turn signal position and verify
Rear Left Turn Signal Operates -
rear left turn signal operates.
Troubleshooting complete.
N OT E
9. Rear Right Turn/Stop
Lamp Does Not Operate
Always inspect the harness connectorsthat are involved in the circuit.
in Both Turn and Stop
Poor connections can often be the cause of a problem in an electrical
circuit. Verify that all connections in the circuit are clean and secure,
and that all connections are in good condition. If a problem with a con-
nection is found, correct the problem and verify that this diagnostic code
is Active before performing this procedure.
Perform open or short circuit test ateach harness connection to identify
correct harness to replace.
Perform this test only if condition is active.
0023-57
