Checking Deadlocking Function
Checking deadlocking function
Checking the diagnostic trouble codes (DTCs)
- Ignition on
- Check diagnostic trouble codes (DTCs) in the front door modules.
If diagnostic trouble codes (DTCs) have been stored in the front door modules, carry out fault-tracing according to these before implementing fault-tracing.
Click the VCT2000 symbol to read diagnostic trouble codes (DTCs) from the driver door module (DDM).
Note! The fault-tracing assumes that the function of the central locking is otherwise OK.
Continue - Checking the diagnostic trouble codes (DTCs)
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Checking the diagnostic trouble codes (DTCs)
Click the VCT2000 symbol to read diagnostic trouble codes (DTCs) from the passenger door module (PDM).
If diagnostic trouble codes (DTCs) have been stored in the front door modules, carry out fault-tracing according to these before implementing fault-tracing.
Click the VCT2000 symbol to read diagnostic trouble codes (DTCs) from the passenger door module (PDM).
Continue - Check the function of lock motors
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Check the function of lock motors
- Open the side windows
- Lock the central locking system using one of the inner switches on the side doors
- Check that the function for reduced alarm is not activated.
Note! The central locking system must be locked for the activation of the motors to function.
Check the deadlock function of the lock motors by activating the lock motors. Click the VCT2000 symbol to begin.
Check that the side doors cannot be opened using the inner door handles when the lock motor is locked.
Click the corresponding button when the function is not OK.
If no fault is found then the fault is probably intermittent. In this case, click on the OK button.
1. The driver's door is not locked
2. The passenger door is not locked
3. The left rear door is not locked
4. The right rear door is not locked
5. The function is OK on all the doors.
1 - Checking the driver's door wiring
2 - Checking the passenger door wiring
3 - Checking the left rear door wiring
4 - Checking the right rear door wiring
OK - Checking the wiring and connectors
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Checking the driver's door wiring
- Ignition off
- Remove the side of the driver's door
- Connect the breakout box for the driver door module (DDM) wiring. Do not connect the control module.
Hint: For information about connectors and terminals, see the wiring diagram for the relevant car model.
Check the connector on the control module and the wiring. Check for damage. Check for damaged pins and sockets. Also check that all sockets and pins are securely mounted.
Take resistance readings between terminals (#10) and (#2) on the breakout box. The readings measure the resistance in the wiring and winding in the deadlock lock motor in the lock unit.
Twist the connectors and bend the cable harness to identify any intermittent short-circuits or open-circuits.
The resistance must be approximately 20 ohms (+-3 ohm).
Note! Do not damage pins or sockets in the terminals when taking the readings. Use a loose terminal pin/socket to obtain good contact.
If no reading is obtained, check the wiring between the control module and the lock unit. Check for an open-circuit. Also check the connector on the lock unit. Check for physical damage, bent pins and "reversed" terminals.
Remedy the cables as necessary.
If no other fault is discovered, the lock unit should be replaced.
Note! Replace the lock unit with a lock unit of the correct type, containing the same number of lock motors.
Other information
- Door latch, front door Service and Repair
- Connecting the breakout box, driver door module / passenger door module (DDM/PDM) Connecting The Breakout Box, Driver Door Module / Passenger Door Module (DDM/PDM)
- Signal specification Signal Description, Driver's Door Module / Passenger Door Module (DDM/PDM)
- Checking wiring and terminals Checking Wiring And Terminals
Continue - Verification
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Checking the passenger door wiring
- Ignition off
- Remove the side of the passenger door
- Connect the breakout box to the wiring for the passenger door module (PDM). Do not connect the control module.
Hint: For information about connectors and terminals, see the wiring diagram for the relevant car model.
Check the connector on the control module and the wiring. Check for damage. Check for damaged pins and sockets. Also check that all sockets and pins are securely mounted.
Take resistance readings between terminals (#10) and (#2) on the breakout box. The readings measure the resistance in the wiring and winding in the deadlock lock motor in the lock unit.
Twist the connectors and bend the cable harness to identify any intermittent short-circuits or open-circuits.
The resistance must be approximately 20 ohms (+-3 ohm).
Note! Do not damage pins or sockets in the terminals when taking the readings. Use a loose terminal pin/socket to obtain good contact.
If no reading is obtained, check the wiring between the control module and the lock unit. Check for an open-circuit. Also check the connector on the lock unit. Check for physical damage, bent pins and "reversed" terminals.
Remedy the cables as necessary.
If no other fault is discovered, the lock unit should be replaced.
Note! Replace the lock unit with a lock unit of the correct type, containing the same number of lock motors.
Other information
- Door latch, front door Service and Repair
- Connecting the breakout box, driver door module / passenger door module (DDM/PDM) Connecting The Breakout Box, Driver Door Module / Passenger Door Module (DDM/PDM)
- Signal specification Signal Description, Driver's Door Module / Passenger Door Module (DDM/PDM)
- Checking wiring and terminals Checking Wiring And Terminals
Continue - Verification
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Checking the left rear door wiring
- Ignition off
- Remove the side of the left-hand rear door
- Disconnect the connector in the door control module.
Hint: For information about connectors and terminals, see the wiring diagram for the relevant car model.
Check the connector on the control module and the wiring. Check for damage. Check for damaged pins and sockets. Also check that all sockets and pins are securely mounted.
Take resistance readings between terminals (#11) and (#2) on the wiring between the door control module and the lock unit. The readings measure the resistance in the wiring and winding in the deadlock lock motor in the lock unit.
Note! Do not damage pins or sockets in the terminals when taking the readings. Use a loose terminal pin/socket to obtain good contact.
Twist the connectors and bend the cable harness to identify any intermittent short-circuits or open-circuits.
The resistance must be approximately 20 ohms (+-3 ohm).
If no reading is obtained, check the wiring between the control module and the lock unit. Check for an open-circuit. Also check the connector on the lock unit. Check for physical damage, bent pins and "reversed" terminals.
Remedy the cables as necessary.
If no other fault is discovered, the lock unit should be replaced.
Note! Replace the lock unit with a lock unit of the correct type, containing the same number of lock motors.
Other information
- To access the door control module and the lock unit: Door latch, rear door Door Latch, Rear Door
- Checking wiring and terminals Checking Wiring And Terminals
Continue - Verification
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Checking the right rear door wiring
- Ignition off
- Remove the side of the right-hand rear door
- Disconnect the connector in the door control module.
Hint: For information about connectors and terminals, see the wiring diagram for the relevant car model.
Check the connector on the control module and the wiring. Check for damage. Check for damaged pins and sockets. Also check that all sockets and pins are securely mounted.
Take resistance readings between terminals (11) and (2) in the wiring between the door control module and the lock unit. The readings measure the resistance in the wiring and winding in the deadlock lock motor in the lock unit.
Note! Do not damage pins or sockets in the terminals when taking the readings. Use a loose terminal pin/socket to obtain good contact.
Twist the connectors and bend the cable harness to identify any intermittent short-circuits or open-circuits.
The resistance must be approximately 20 ohms (+-3 ohm).
If no reading is obtained, check the wiring between the control module and the lock unit. Check for an open-circuit. Also check the connector on the lock unit. Check for physical damage, bent pins and "reversed" terminals.
Remedy the cables as necessary.
If no other fault is discovered, the lock unit should be replaced.
Note! Replace the lock unit with a lock unit of the correct type, containing the same number of lock motors.
Other information
- To access the door control module and the lock unit: Door latch, rear door Door Latch, Rear Door
- Checking wiring and terminals Checking Wiring And Terminals
Continue - Verification
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Verification
Verification
- Ignition on
- Open the side windows.
Check the deadlock function of the lock motors by activating the lock motors. Click the VCT2000 symbol to begin.
Check that the relevant door cannot be opened from inside when the lock motor is locked.
Is the function OK?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFIED - FAULT FOUND
VERIFICATION FAILED - Fault-tracing information
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Fault-tracing information
Attempt New Test - Checking the diagnostic trouble codes (DTCs)
FAULT-TRACING FAILED - FAULT-TRACING FAILED
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Checking the wiring and connectors
- Ignition off.
If the fault is intermittent, the wiring and connectors should be checked in the door(s) where the customer has complained of faulty function.
Check the wiring and the connectors between the lock units in the doors and each door control module. Look particularly for cables with damaged insulation that can result in intermittent short-circuits. Also check the connectors between the door control module and the lock unit. Check for oxidation.
If no faults are found in the wiring, replace the lock unit in the door being checked.
Remedy as necessary.
Other information
- Door latch, front door Service and Repair
- To access the door control module and lock mechanism in the rear doors: Door latch, rear door Door Latch, Rear Door
- Checking wiring and terminals Checking Wiring And Terminals
Continue - Verification
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