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DDM / B3270 61

Read the instructions below then start the fault diagnostic procedure.

Symptom: Central locking system cannot be operated with the central locking system button.

  B3270 61


Central Locking Switch Stuck

Fault symptom

Central locking system cannot be operated with the central locking system button.

On-board diagnosis

Type of diagnosis:

Each time the control module checks if the button is depressed or not.

Enable criteria:

When the car is unlocked with the central locking button.

Fault criteria:

Voltage too low.

System reaction to a fault:

The control module determines that the button has not been pressed until it has returned to an inactive position and is depressed again.

Checking the wiring harness

Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Diagnosis regards:

Electrical fault in connecting leads or component.

Functions in the diagnostic tool related to the fault:

Test value:
Driver Door Lock Switch
(See also description of readings/activations in diagnostic tool)