Checking Door Lock Switch, Driver's Door
Checking door lock switch, driver's door
Checking the locking signal from the door lock switch
- Ignition off
- Connect the breakout box
- Connect an ohmmeter between terminals #A16 (A16) and #A1 (A1).
Turn the key in the driver's door to the locking position.
The value must be infinite when the lock is unaffected and 0 ohms when the key is turned to the locking position.
Other information
- To connect the breakout box, see Connecting the breakout box, lock and alarm (VGLA) Connecting the Breakout Box.
Is the value OK?
Yes - Checking unlocking signal from door lock switch
No - Checking contact resistance
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Checking contact resistance
- Expose the lock unit in the driver's door. See
- Check the connector for the VGLA control module and the gray connector for the lock unit. Check for contact resistance and oxidation. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
- Ignition off
- Connect the breakout box
- Connect an ohmmeter between terminals #A16 (A16) and #A1 (A1).
Turn the key in the driver's door to the locking position.
The value must be infinite when the lock is unaffected and 0 ohms when the key is turned to the locking position.
Other information
- To connect the breakout box, see Connecting the breakout box, lock and alarm (VGLA) Connecting the Breakout Box.
Is the value OK?
Yes - FAULT FOUND
No - Checking cables
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Checking cables
For left-hand drive cars:
Check the cable between VGLA control module terminal #A16 and the gray lock unit connector terminal 2. Check the cable between the gray lock unit connector terminal 3 and ground. Check for an open-circuit. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
For right-hand drive cars:
Check the cable between VGLA control module terminal #A16 and the gray lock unit connector terminal 3. Check the cable between the gray lock unit connector terminal 2 and ground. Check for an open-circuit. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Was a fault found in the wiring?
Yes - Verification
No - Replacing the component
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Replacing the component
Replace the lock unit.
Continue - Verification
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Checking unlocking signal from door lock switch
- Ignition off
- Connect the breakout box
- Connect an ohmmeter between terminals #A18 (A18) and #A1 (A1).
Turn the key in the driver's door to the unlocking position.
The value must be infinite when the lock is unaffected and 0 ohms when the key is turned to the unlocking position.
Other information
- To connect the breakout box, see Connecting the breakout box, lock and alarm (VGLA) Connecting the Breakout Box.
Is the value OK?
Yes - No Fault Found
No - Checking contact resistance
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Checking contact resistance
- Expose the lock unit in the driver's door. See
- Check the connector for the VGLA control module and the gray lock unit connector. Check for contact resistance and oxidation. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
- Ignition off
- Connect the breakout box
- Connect an ohmmeter between terminals #A18 (A18) and #A1 (A1).
Turn the key in the driver's door to the unlocking position.
The value must be infinite when the lock is unaffected and 0 ohms when the key is turned to the unlocking position.
Other information
- To connect the breakout box, see Connecting the breakout box, lock and alarm (VGLA) Connecting the Breakout Box.
Is the value OK?
Yes - FAULT FOUND
No - Checking cables
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Checking cables
For left-hand drive cars:
Check the cable between VGLA control module terminal #A18 and the gray lock unit connector terminal 1. Check for an open-circuit. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
For right-hand drive cars:
Check the cable between VGLA control module terminal #A18 and the gray lock unit connector terminal 4. Check for an open-circuit. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Were any faults found in the cable?
Yes - Verification
No - Replacing the component
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Replacing the component
Replace the lock unit in the driver's door.
Continue - Verification
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Verification
Hint: After carrying out the repair check that the fault has been remedied:
- Ignition off
- Reconnect the connectors, reinstall components etc.
- Connect the breakout box
- Connect an ohmmeter between terminals #A16 (A16) and #A1 (A1).
Turn the key in the driver's door to the locking position.
The value must be infinite when the lock is unaffected and 0 ohms when the key is turned to the locking position.
- Connect an ohmmeter between terminals #A18 (A18) and #A1 (A1).
Turn the key in the driver's door to the unlocking position.
The value must be infinite when the lock is unaffected and 0 ohms when the key is turned to the unlocking position.
Other information
- To connect the breakout box, see Connecting the breakout box, lock and alarm (VGLA) Connecting the Breakout Box.
Are these values OK?
Yes - FAULT FOUND
No - Fault-tracing information
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Fault-tracing information
Information
Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.
Do you want to exit fault-tracing?
Yes - Exit fault-tracing
No - Attempt New Test
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Attempt New Test - Checking the locking signal from the door lock switch
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