TM 5-2420-231-23-1
0035
Table 1. All Lights and Alarm Signal Do Not Function - Continued.
035
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
All Lights and Alarm Signal 2. Remove instrument panel front
cover (WP 0174).
Do Not Function - Continued
3. Remove driving lights relay
(WP 0007, Figure 69) from front
console wiring harness connector
(WP 0007, Figure 68).
4. Remove power relay No. 3
(WP 0007, Figure 74) from front
console wiring harness connector
(WP 0007, Figure 73).
5. Using a digital multimeter, test for
Continuity - Replace front console
continuity between front console
wiring harness (WP 0162).
wiring harness connector
Proceed to Test Step 11.
(WP 0007, Figure 71) terminal H
No Continuity - Proceed to step 6.
and machine ground. There should
be no continuity.
6. Disconnect front console wiring
harness connector (WP 0007, Fig-
ure 5) from main chassis wiring
harness connector (WP 0007, Fig-
ure 6).
7. Using a digital multimeter, test for
Continuity - Replace front console
continuity between front console
wiring harness (WP 0162).
wiring harness connector
Proceed to Test Step 11.
(WP 0007, Figure 71) terminal B
No Continuity - Proceed to step 8.
and machine ground. There should
be no continuity.
8. Remove alarm relay (WP 0007,
Figure 76) from front console wir-
ing harness connector (WP 0007,
Figure 75).
9. Using a digital multimeter, test for
Continuity - Replace front console
continuity between front console
wiring harness (WP 0162).
wiring harness connector
Proceed to Test Step 11.
(WP 0007, Figure 71) terminal J
No Continuity - Proceed to Test Step 7.
and machine ground. There should
be no continuity.
Test Step 7. Check for Faulty Relay.
1. Using a digital multimeter, mea-
Resistance 80 to 100 Ohms - Proceed
to step 2.
sure resistance between power
Resistance Less Than 80 Ohms -
relay No. 3 (WP 0007, Figure 74)
Replace power relay No. 3 (WP 0007,
terminals 85 and 86. Resistance
Figure 74).
should be 80 to 100 ohms.
Proceed to Test Step 11.
0035-6