TM 9-2330-267-14&P
Table 4-2. Organizational Troubleshooting (Con’t).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3.
Step 4.
Set multimeter for voltage check. Place red lead (9) in lamp socket, black lead to ground, and
check for 24 volts,
If voltage is not present, go to step 5.
If voltage is present, install new tamp (8).
Step 5.
Disconnect wire 489 (10), place red lead (9) in wire, black lead to ground, and check for 24 volts.
If no voltage is present, go to step 6.
if voltage is present, connect wiring and go to step 7.
Step 6.
Step 7.
Connect wire 489 (10) at the rear harness connector and disconnect wire 489 from wire 21 at the
intervehicular connector. Place the red lead (9) in wire 21 and check for 24 volts.
If voltage is present, replace chassis wiring harness (para 4-25).
If voltage is not present, replace intervehicular cable (2) (para 4-27).
Remove composite light assembly (para 4-24), and check mounting surface for cleanness.
Clean mounting surface with rag (item 18, Appendix E) and cleaning compound (Item 5,
Appendix E) as required. Install composite light assembly (para 4-24). If lamp does not light,
replace composite light assembly.
LEFT (STOPLIGHT) BRAKE LIGHT LEFT SIGNAL, RIGHT (STOPLIGHT) BRAKE LIGHT AND RIGHT
SIGNAL LIGHT WILL NOT LIGHT
Step 1.
Using troubleshooting procedures from towing vehicle technical manual, perform test to ensure 24
volts are present in towing vehicle socket (3).
Correct towing vehicle wiring, (see towing vehicle technical maintenance manual).
TA506992
4-12
