TCS/ESP / U2105 72

/ 9-3 (9440) / 2006 / DTCs / TCS/ESP / U2105 72

Read the instructions below then start the fault diagnostic procedure.

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

U2105 72

ECM 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 receives incorrect signal (data) from ECM

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

Functions in the diagnostic tool related to the fault:

Test value:

Bus Off Counter, P-Bus

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