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
3. Turn control indicator switch to
RH and/or LH Joystick Illumination
Illumination Lights Do
position SER. DRIVE (TM 5-
Lights Do Not Operate - Repeat
not Operate - Continued
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 6. Check for Open Circuit
In Cab Upper or Cab Lower Wiring
Harness.
1. Connect jumper wire between RH
joystick illumination lights harness
connector R-C50 (WP 0009, Fig-
ure 284) terminals 1 and 2.
2. Using digital multimeter, measure
Resistance Less Than 5.0 Ohms -
resistance between cab lower wir-
Proceed to Test Step 8.
ing harness connector P-C11 (WP
Resistance 5.0 Ohms or Greater -
0009, Figure 286) terminal 7 and
Proceed to Test Step 7.
machine ground. Resistance
should be less than 5.0 ohms.
Test Step 7. Check for Open Cab
Upper Wiring Harness.
1. Disconnect the cab lower wiring
harness connector P-C3 (WP
0009, Figure 34) from cab upper
wiring harness connector R-C1
(WP 0009, Figure 33).
0023-9