Checking Lock Mechanism, Power Operated Tailgate Module (POT)
Checking lock mechanism
Checking the voltage
If the lock mechanism does not work for Power Operated Tailgate Module (POT) it may be due to the battery being in poor condition or short-circuiting on the voltage supply to Power Operated Tailgate Module (POT). Power Operated Tailgate Module (POT) only works at a voltage above 10.5 V.
Check voltage supply to Power Operated Tailgate Module (POT) and voltage supply to Central electronic module (CEM) by clicking on the symbol for VCT2000, and read out the values.
If the battery is poor, replace it.
However, if there is a difference of the voltage supply between Central electronic module (CEM) and Power Operated Tailgate Module (POT) greater than 2 V, check the cable harness. This check should be done with regards to short-circuiting to ground.
Remedy as necessary.
Other information
- Battery Removal and Replacement
- Checking wiring and terminals Checking Wiring And Terminals
Was a fault detected?
Yes - Verification
No - Checking the sensor
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Checking the sensor
Power Operated Tailgate Module (POT) checks the voltage to the switch for the tailgate's external handle.
Check status for the external handle by clicking on the symbol for VCT2000. Status shall show pressed in when you press in the handle, and released when you do not press the handle.
If status shows pressed in even if there is no evident action, check the external handle with regards to the sensor having been displaced.
Was a fault detected?
Yes - Verification
No - Checking the cable and component
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Checking the cable and component
Check the leads between Power Operated Tailgate Module (POT) and the external handle. Also investigate the connector in Power Operated Tailgate Module (POT) and the connector in the external handle with regards to loose connection and oxidation.
If the leads are intact, replace external handle.
Remedy as necessary.
Other information
- Location of components Locations
- Outer tailgate/trunk lid handle Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals
Was a fault detected?
Yes - Verification
No - Checking software
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Checking the sensor
Power Operated Tailgate Module (POT) checks status for motor close and time when closing of tailgate is in progress with sensor, first lock position, and sensor, completely closed. Sensor, first lock position, shall be active when the lock is in first or second lock position, and not active if the lock is open. Sensor, completely closed, shall only be active when the lock is completely closed, and not active if the lock is open or in first lock position.
Check sensor, first lock position, and sensor, completely closed, by:
- Click on the symbol for VCT2000 and read out status for sensors.
- Close the tailgate with the button on the tailgate's lower edge.
- Check that sensors changes status at the end of closing.
If status does not change for the sensors, the lock mechanism shall be replaced.
Other information
- Location of components Locations
- Trunk lid/tailgate lock mechanism Service and Repair
Was a fault detected?
Yes - Verification
No - Checking the component
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Checking the component
Problems with the lock mechanism not locking may be due to that the cable between motor close and the lock is worn or defective. Check that the cable is intact. At the same time, check that the lock works well mechanically.
Remedy as necessary.
Other information
- Location of components Locations
- Lock motor tailgate Service and Repair
- Trunk lid/tailgate lock mechanism Service and Repair
Was a fault detected?
Yes - Verification
No - Checking the sensor
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Checking software
Check that the latest software is in the module by downloading an upgrade for Power Operated Tailgate Module (POT).
Possible to download new software to the module?
Yes - Verification
No - Information
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Verification
Verification
Hint: After carrying out the repair check that the fault has been remedied.
- Ignition off.
- Reinstall the connectors, components etc.
- Ignition on.
- Check the function by opening and closing the tailgate using the different button combinations.
Is the function OK?
Yes - FAULT FOUND
No - Attempt New Test
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Attempt New Test - Information
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Information
Information
Fault-tracing information
The fault must now be detected and remedied. As this is not the case, troubleshooting has failed.
Exit symptom symptom troubleshooting or try again.
Do you want to exit symptom troubleshooting?
Yes - Exit fault-tracing
No - Attempt New Test
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Attempt New Test - Checking the voltage
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