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TCS / U2103 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: TCS/ESP warning lamp comes on. Message appears in display.

  U2103 00


TCS/ESP was Missing on Bus

Fault symptom

TCS/ESP warning lamp comes on.

Message appears in display.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Ignition ON.

Fault criteria:

Control module absent on the P-bus.

System reaction to a fault:

No TCS/ESP function

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.
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In order to read DTC from TCS/ESP, communication with CIM is required. If the DTC is stored and read with the diagnostic instrument, it indicates intermittent bus lead fault.

Functions in the diagnostic tool related to the fault:

Test value:
Bus Off Counter, P-Bus
Response Test
Read / Reset Bus Configuration

(See also description of readings/activations in diagnostic tool)