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
2. Using digital multimeter, measure
Resistance Less Than 5.0 Ohms -
Illumination Lights Do
resistance between cab upper
Replace cab lower wiring harness
not Operate - Continued
wiring harness connector R-C1
(WP 0266).
(WP 0009, Figure 33) terminal 31
Remove jumper wire between R-C50
and 15. Resistance should be
(WP 0009, Figure 284) terminals 1
less than 5.0 ohms.
and 2.
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.
Resistance 5.0 Ohms or Greater -
Replace cab upper wiring harness
(WP 0265).
Connect the control indicator harness
connector PE-C11 (WP 0009, Figure
287) to cab lower wiring harness con-
nector P-C11 (WP 0009, Figure 286)
(WP 0283).
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 8. Check for Shorted
Control Indicator Wiring Harness.
1. Remove jumper wire from R-C50
(WP 0009, Figure 284) terminals
1 and 2.
2. Using digital multimeter, measure Continuity - Proceed to Test Step 9.
for continuity between control
No Continuity - Proceed to Test Step
indicator harness connector PE-
10.
C11 (WP 0009, Figure 287) termi-
nal 1 and machine ground. There
should be no continuity.
0023-10