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Table 1. Rear Work Lights Do Not Function Correctly - Continued.
Table 1. Rear Work Lights Do Not Function Correctly - Continued.

Tractor, Wheeled, Industrial Backhoe Loader Nsn 2420-01-532-3399
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TM 5-2420-231-23-1
0038
Table 1. Rear Work Lights Do Not Function Correctly - Continued.
038
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. Using digital multimeter, measure
Voltage 10 to 14 Volts - Replace both
Rear Work Lights Do Not
voltage between rear lights wiring
left rear work lamps (WP 0178).
Function Correctly -
harness connector (WP 0007, Fig-
Proceed to Test Step 23.
Continued
ure 82) terminals 3 and 4. Voltage
Voltage Less Than 10 Volts - Proceed
should be 10 to 14 volts.
to Test Step 7.
Test Step 7. Check for Open Circuit
in Main Chassis Wiring Harness.
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Install a jumper wire between rear
lights wiring harness connector
(WP 0007, Figure 82) terminals 1
and 2.
3. Remove front instrument panel
right-side cover (WP 0176).
4. Disconnect rear main chassis wir-
ing harness connector (WP 0007,
Figure 25) from side console wir-
ing harness connector (WP 0007,
Figure 24).
5. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Less -
sure resistance between rear main
Replace side console wiring harness
chassis wiring harness connector
(WP 0170).
(WP 0007, Figure 25) terminal 5A
Proceed to Test Step 23.
and machine ground. Resistance
Resistance Greater Than 5.0 Ohms -
should be 5.0 ohms or less.
Proceed to Test Step 8.
Test Step 8. Check for Open Circuit
in Rear Lights Wiring Harness.
1. Remove rear right floor cover plate
(WP 0306).
2. Disconnect rear lights wiring har-
ness connector (WP 0007, Figure
86) from main chassis wiring har-
ness connector (WP 0007, Figure
87).
3. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Less -
sure resistance between rear lights
Replace main chassis wiring harness
wiring harness connector (WP
(WP 0154).
0007, Figure 86) terminal A and
Proceed to Test Step 23.
machine ground. Resistance
Resistance Greater Than 5.0 Ohms -
should be 5.0 ohms or less.
Replace rear lights wiring harness
(WP 0184).
Proceed to Test Step 23.
0038-6


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