TM 5-3805-293-23-2
0023
Table 1. Cab Electrical Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
N OT E
2. One or Both Joystick
Illumination Lights Do
Always inspect the harness connectorsthat are involved in the circuit.
not Operate
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.
Test Step 1. Check for Bad LED
Lights.
1. Disconnect the cab upper wiring
harness connector R-C50 (WP
0009, Figure 284) from RH joy-
stick illumination light.
2. Disconnect the cab upper wiring
harness connector R-C51 (WP
0009, Figure 285) from LH joy-
stick illumination light.
3. Turn battery disconnect switch to
the ON position (TM 5-3805-293-
10).
4. Turn control indicator switch to
position SER. DRIVE (TM 5-
3805-293-10).
5. Using digital multimeter, test for
Voltage Between 18 and 26 Volts -
voltage between cab upper wiring
Proceed to step 6.
harness connector R-C50 (WP
Voltage Less Than 18 Volts - Pro-
0009, Figure 284) terminal 1 and
ceed to Test Step 2.
2. Voltage should be 18 to 26
volts.
0023-5
