Table 4-2. Unit Troubleshooting - CONT.
TEST OR INSPECTION
CHASSIS ELECTRICAL (CONT)
BRAKE LIGHTS DO NOT OPERATE.
Remove rings, bracelets, wristwatches, and neck chains before working on any vehicle. Jewelry can
catch on equipment and cause injury, or may short across an electrical circuit and cause severe burns or
Step 1. Pry taillights from grommets and check for loose ground connections. Tighten ground connections.
Step 2. Using a multimeter, check for 12 Vdc at LH junction block terminal marked RED.
If 12 Vdc are present, replace defective LH lamp assembly (page 4-75).
Step 3. If only RH lamp assembly is out, use a multimeter and check RH junction block terminal marked red.
If 12 Vdc are present, replace defective RH lamp assembly (page 4-80).
If 12 Vdc are not present, replace or repair wire between junction blocks.