TM 5-3805-293-23-2
0023
Table 1. Cab Electrical Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. One or Both Joystick
Test Step 9. Check for Shorted
Illumination Lights Do
Control Indicator Switch.
not Operate - Continued
1. Disconnect the control indicator
harness connector PE-C10 (WP
0009, Figure 288) from control
indicator switch (WP 0009, Figure
289).
2. Using digital multimeter, measure
Continuity - Replace control indicator
for continuity between control
switch (WP 0283).
indicator switch (WP 0009, Figure
Connect the control indicator harness
289) terminal F and machine
connector PE-C11 (WP 0009, Figure
ground. There should be no conti-
287) to cab lower wiring harness con-
nuity.
nector P-C11 (WP 0009, Figure 286)
(WP 0283).
Connect the cab upper wiring harness
connector R-C50 (WP 0009, Figure
284) to RH joystick illumination light.
Connect the cab upper wiring harness
connector R-C51 (WP 0009, Figure
285) to LH joystick illumination light.
Proceed to step 3.
No Continuity - Replace control indi-
cator harness (WP 0283).
Connect the cab upper wiring harness
connector R-C50 (WP 0009, Figure
284) to RH joystick illumination light.
Connect the cab upper wiring harness
connector R-C51 (WP 0009, Figure
285) to LH joystick illumination light.
Proceed to step 3.
3. Turn control indicator switch to
RH and/or LH Joystick Illumination
position SER. DRIVE (TM 5-
Lights Do Not Operate - Repeat
3805-293-10) and verify RH and
troubleshooting from the beginning.
LH joystick illumination lights
RH and LH Joystick Illumination
operate.
Lights Operate - Troubleshooting
complete.
Test Step 10. Check for Shorted
Cab Upper Wiring Harness.
1. Disconnect the cab upper wiring
harness connector R-C1 (WP
0009, Figure 33) from cab lower
wiring harness connector P-C3
(WP 0009, Figure 34).
0023-11
