LT
LT
LT
LT
Lighting
Lighting
Lighting
Lighting System
System
System
System
-
73
-
Diagnosis
Diagnosis
Diagnosis
Diagnosis and
and
and
and Testing
Testing
Testing
Testing
Fault
Fault
Fault
Fault diagnosis
diagnosis
diagnosis
diagnosis
12. Diagnostic program for brake lamps
Step Operation
Yes
No
1 Turn on the ignition switch to check fuse. Is the fuse intact? Go to Step 3. Go to Step 2.
2 Please replace the damaged fuse. Does it still fail after replacement? Go to Step 5. Go to Step 3.
3 Measure the fuse voltage. Is it normal? Go to Step 5. Go to Step 4.
4 Check the instrument panel harness.
5 Disconnect the brake switch connector and check the brake switch. Ensure the
brake switch is normal. Is the measured voltage normal?
Go to Step 7. Go to Step 6.
6 Check the instrument panel harness from brake switch to fuse.
7 Check connector between instrument panel and rear body harness. Is it normal?? Go to Step 8.
8 Check the rear body harness from connector to brake lamp. Go to Step 9.
9 Check the connector between brake lamp and wiring harness. Go to Step 10.
10 Check the ground point of rear body harness. Is it well grounded?
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