LT
LT
LT
LT
Lighting
Lighting
Lighting
Lighting System
System
System
System
- 64 -
Diagnosis
Diagnosis
Diagnosis
Diagnosis and
and
and
and Testing
Testing
Testing
Testing
Fault
Fault
Fault
Fault diagnosis
diagnosis
diagnosis
diagnosis
3. High-mounted brake lamp failed
Step Operation
Yes
No
1 Is the fuse blown out? Go to Step 4. Go to Step 2.
2 Connect the test lamp with two terminals of brake signal lamp switch. Does
the test lamp lighten?
Go to Step 5. Go to Step 3.
3
① Connect the test lamp with two terminals of high-mounted brake signal
lamp.
②
Depress the brake pedal to check if the test lamp lightens?
Go to Step 6. Go to Step 7.
4 Replace fuse.
5 Replace brake signal lamp switch.
6 Replace high-mounted brake signal lamp.
7 Repair the circuit of poor contact.
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