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DDM / B3270 02

Read the instructions below then start the fault diagnostic procedure.

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

  B3270 02


Central Locking Switch Circuit, Short to Ground

Fault symptom

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

On-board diagnosis

Enable criteria:

When the car is locked/unlocked.

Fault criteria:

Control module signal invalid.

System reaction to a fault:

None

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)