Engine JAC HFC4DA1-2C. Manual — part 69
LT
LT
LT
LT Lighting
Lighting
Lighting
Lighting System
System
System
System
- 66 -
Diagnosis
Diagnosis
Diagnosis
Diagnosis and
and
and
and Testing
Testing
Testing
Testing
Fault
Fault
Fault
Fault diagnosis
diagnosis
diagnosis
diagnosis
5.
Glove box lamp failed
Step
Operation
Yes
No
1
Is the fuse blown out?
Go to Step 3.
Go to Step 2.
2
Check if the bulb filament of glove box is burnt out. Is the filament burnt out?
Go to Step 4.
Go to Step 5.
3
Replace fuse.
4
Replace bulb.
5
Repair the circuit of poor contact.
LT
LT
LT
LT Lighting
Lighting
Lighting
Lighting System
System
System
System
- 67 -
Diagnosis
Diagnosis
Diagnosis
Diagnosis and
and
and
and Testing
Testing
Testing
Testing
Fault
Fault
Fault
Fault diagnosis
diagnosis
diagnosis
diagnosis
6.
Both high and low beams failed
Step
Operation
Yes
No
1
Set the switch to
position and the high/low beam switch to high beam
position. Is the fuse intact?
Go to Step 2.
Go to Step 3.
2
Measure the fuse voltage. Is the voltage normal?
Go to Step 7.
Go to Step 4.
3
Please replace the damaged fuse. Does it still fail after replacement?
Go to Step 7.
Go to Step 2.
4
Check the high/low beam switch. Is it normal?
Go to Step 5.
5
Check switches. Are they normal?
Go to Step 6.
6
Check wiring harness of instrument panel as per circuit diagram.
Go to Step 8.
7
Check the high beam signaling device. Does it operate normally?
Go to Step 9.
8
Check high/low beam and wiring harness connector. Are there intact?
Go to Step 9.
-
9
Check lamp connector pin. Is wire well-grounded?
Go to Step 10.
10
Disconnect the connector between high/low beam and front body harness. Is the
pin voltage normal?
Go to Step 11.
Go to Step 12.
11
Check connector for good contact and check the front body harness from
connector to lamp as per circuit diagram.
12
Check connector for good contact and check the instrument panel harness from
fuse to connector as per circuit diagram.
LT
LT
LT
LT Lighting
Lighting
Lighting
Lighting System
System
System
System
- 68 -
Diagnosis
Diagnosis
Diagnosis
Diagnosis and
and
and
and Testing
Testing
Testing
Testing
Fault
Fault
Fault
Fault diagnosis
diagnosis
diagnosis
diagnosis
7.
Only high beam failed
Step
Operation
Yes
No
1
Check if the high beam signaling device operates normally (only for high
beam)?
Go to Step 2.
Go to Step 3.
2
Check lamps and harness connectors and ensure they are normal when the
high beam position is selected.
Go to Step 3.
3
Disconnect the connector between instrument panel and front body harness. Is
the voltage normal?
Go to Step 4.
Go to Step 5.
4
Check the front body harness from connector to high beam as per circuit
diagram. Is it intact?
Go to Step 5.
5
Check the instrument panel harness from fuse to connector as per circuit
diagram.
6
Is the fuse intact?
Go to Step 7.
Go to Step 9.
7
Measure the fuse voltage. Is it normal?
Go to Step 8.
Go to Step 11.
8
Check the instrument panel harness from fuse to connector.
Go to Step 10.
9
Replace the fuse. Does it still fail after replacement?
Go to Step 8.
Go to Step 7.
10
Check connector and front body harness.
Go to Step 2.
11
Check high/low beam switch and the instrument panel harness from switch to
fuse.
LT
LT
LT
LT Lighting
Lighting
Lighting
Lighting System
System
System
System
- 69 -
Diagnosis
Diagnosis
Diagnosis
Diagnosis and
and
and
and Testing
Testing
Testing
Testing
Fault
Fault
Fault
Fault diagnosis
diagnosis
diagnosis
diagnosis
8.
Low beam failed
Step
Operation
Yes
No
1
Check lamps and wiring harness connectors. Are they intact?
Go to Step 2.
2
Is the fuse intact?
Go to Step 3.
Go to Step 8.
3
Measure the fuse voltage. Is it normal?
Go to Step 4.
Go to Step 7.
4
Check connector between instrument panel and front body harness. Is the
measured voltage normal?
Go to Step 5.
5
Check front body electric harness.
6
Check instrument panel harness.
7
Check high/low beam switch and the instrument panel harness from switch to
fuse.
8
Replace the fuse. Does it still fail after replacement?
Go to Step 4.
Go to Step 3.
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