TM-9-2320-260-20
TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
APRIL 1995
TM-9-2320-260-20 - Page 231 of 1337
TM 9-2320-260-20
Table 2-4. Electrical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test 6. Test wiring harness for floodlights ground.
Step 1. Disconnect ground leads W3-3, W3-4, and W3-5 for floodlights.
Step 2.
Step 3.
Step 4.
Step 5.
Step 6.
Step 7.
Step 8.
Step 9.
Step 10.
Step 11.
Step 12.
Step 13.
Step 14.
Step 15.
Step 16.
Set multimeter to RX1 scale.
Disconnect lead W3 connector.
Touch positive lead of multimeter to contact end of lead W3-3.
Touch negative lead of multimeter to contact end of connector at lead W3. Continuity
should be present.
Repeat steps 4 and 5 for leads W3-4 and W3-5.
a. If continuity is present, go to step 7.
b. Repair or replace lead if continuity is not present (para. 4-52 or 4-53).
Disconnect two leads 87 at floodlight switch (pins A and D).
Disconnect lead 87 at connector.
Touch positive lead of multimeter to contact end of lead 87 at connector.
Touch negative lead of multimeter to lead 87 at floodlight switch (pins A and D).
Continuity should be present.
Repeat steps 9 and 10 for lead 87 at floodlight switch (pins B and C). Continuity should
be present.
a. If continuity is present, go to step 12.
b. Repair or replace lead 87 if continuity is not present (para. 4-52 or 4-53).
Touch positive lead of multimeter to contact end of lead W4/87 going to ring collector.
Touch negative lead of multimeter to lead
W1
from ring collector. Continuity should be
present.
a. If continuity is present, go to test 7.
b. If continuity is not present, notify next higher level maintenance.
Disconnect ground lead (W6- 1) connector.
Touch positive lead of multimeter to contact end of ground lead (W6- 1) going to ring
collector.
Touch negative lead of multimeter to contact end of lead W3 from ring collector.
Continuity should be present.
a. If continuity is present, go to test 7.
b. If continuity is not present, notify your supervisor.
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