Table 1. Cab Electrical Troubleshooting Procedures - Continued.
TEST OR INSPECTION
N OT E
11. Rear Right Turn/Stop
Lamp Does Not Operate
Always inspect the harness connectorsthat are involved in the circuit.
in Turn Only, Both Stop
Poor connections can often be the cause of a problem in an electrical
Lights Operate Normally
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.
Test Step 1. Check for Faulty Rear
1. Turn control indicator switch to
position SER. DRIVE (TM 5-
2. Turn the turn signal switch (TM 5-
3805-293-10) to the right turn sig-
3. Disconnect the rear right turn
diode (WP 0009, Figure 324) from
cab lower wiring harness connec-
tor P-C30 (WP 0009, Figure 325)
4. Turn battery disconnect switch to
the ON position (TM 5-3805-293-
Voltage Pulsing and Peaks
voltage between cab lower wiring
Between 18 and 26 Volts - Replace
harness connector P-C30 (WP
rear right turn diode (WP 0009, Figure
0009, Figure 325) terminal 2
(White wire) and machine ground.
Proceed to step 6.
Voltage should be pulsing 18 to
Voltage Less Than 18 Volts - Pro-
ceed to Test Step 2.
6. Turn control indicator switch to
Rear Right Turn Signal Does Not
position SER. DRIVE, turn signal
Operate - Repeat troubleshooting
switch (TM 5-3805-293-10) to the
from the beginning.
right turn signal position and verify
Rear Right Turn Signal Operates -
rear right turn signal operates.
Test Step 2. Check for Faulty Turn
1. Turn battery disconnect switch to
the OFF position.