ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
TEST OR INSPECTION
22. ONE BACKUP LIGHT DOES NOT WORK - CONTINUED.
Although KEY SWITCH must be on and battery ground cable connected to test electrical circuit
voltage, turn off KEY SWITCH and disconnect battery ground cable before doing resistance tests
or replacing parts. This will keep you from getting shocked and prevent damage to parts and
Scrape painted surfaces to bare metal before connecting test leads to ensure correct multimeter
Steps 5 and 6 are for left backup light only.
Using number one cross-tip screwdriver, unscrew and take out four screws (1) and take off terminal
cover (2) from left stoplight/taillight assembly (3). Check blue wire (4) for broken, frayed, or corroded
a. If blue wire (4) is broken, blue wire (4) must be replaced. Notify Direct Support Maintenance.
b. If blue wire (4) is frayed, repair (page 2-424).
c. If blue wire (4) is corroded, pull wire terminal (5) off terminal (6) on left stoplight/taillight
assembly (3). Clean wire terminal (5) and terminal (6) using wire brush.
d. If blue wire (4) is not broken, frayed, or corroded, go to step 6.
Set multimeter to ohms scale and adjust to 0 ohms. Connect red test lead to terminal (6) and black
test lead to stud (7). Check for 0 ohms on multimeter. Disconnect test leads.