JAC Multifunctional Commercial Vehicle Company Sunray series Power Window
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Diagnosis
Diagnosis
Diagnosis
Diagnosis and
and
and
and Testing
Testing
Testing
Testing
Troubleshooting
Troubleshooting
Troubleshooting
Troubleshooting
2. The left front door power window cannot operate.
Step Operation Method
Yes
No
1
Check if the output signal from power window main switch is normal
Disconnect the left front door power window motor connector and turn the ignition switch
on. When the power window main switch goes up, the voltage between Terminal 2 of left
front door power window motor connector D08 and ground is the battery voltage, the voltage
between Terminal 1 and ground is 0
V,
and it is reverse when going down.
Go to Step 2 Go to Step 3
2 Replace the left front door power window motor.
3
Check if the harness connection between left front door power window switch and motor is
normal.
Go to Step 2 Go to Step 4
4
Repair the harness connector between left front door power window switch and motor. Is the
fault eliminated?
Go to Step 2
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