TM 9-2320-363-20-1
Table 3-1. Troubleshooting (Cont)
Malfunction
Test or inspection
Corrective action
ELECTRICAL SYSTEM (CONT)
Power Take-Off (PTO) Circuits (All Except M915A2) (Cont)
Step 8.
Disconnect ground lead from PTO solenoid valve. Check for continuity
between ground lead and ground.
If continuity is indicated, notify direct support maintenance. If
no continuity is indicated, repair ground lead (page 3-2).
2. PTO INDICATOR LIGHT NOT OPERATING, OTHER PTO CIRCUITS OPERATING NORMALLY.
Step 1.
Check PTO indicator light.
If defective, replace light (page 4-182).
Step 2.
Check for continuity between socket and ground.
If continuity is indicated, go to step 3. If no continuity is
indicated, repair ground lead (page 3-2).
Step 3.
Disconnect lead 200F from engine harness. Check for +12 VDC at lead 200F.
If +12 VDC is present, go to step 4. If no voltage is present,
repair lead 200F (page 3-2).
Step 4.
Disconnect lead 200F from PTO indicator light switch. Check for +12 VDC at
lead 200F.
If +12 VDC is present, go to step 5. If no voltage is present,
repair lead 200F (page 3-2).
Step 5.
Disconnect lead 200F and lead 200 from PTO indicator light switch. Check
for continuity between contacts of switch.
If continuity is indicated, go to step 6. If continuity is not
indicated, replace PTO indicator light switch (page 4-182).
Step 6.
Disconnect lead 200 from engine harness. Check for +12 VDC at engine
harness disconnect.
If +12 VDC is present, go to step 7. If no voltage is present,
repair lead 200 (page 3-2).
Step 7.
Disconnect lead 200 from main cab harness. Check for +12 VDC at lead 200.
If +12 VDC is present, go to step 8. If no voltage is present,
repair lead 200 between main cab harness and engine harness
(page 3-2).
Change 3 3-57
