TCS/ESP / C0040 2A

Read the instructions below then start the fault diagnostic procedure.

Symptom: ABS/TCS/ESP warning lamp on. Message appears in display. Steering column lock not working.

C0040 2A

Fault symptom

ABS/TCS/ESP warning lamp on.

Message appears in display.

Steering column lock not working.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

•	Ignition ON.

•	Vehicle speed over 6 km/h

Fault criteria:

The sensor sends unrealistic vehicle speed signals to the control module for at least 150 ms.

System reaction to a fault:

No ABS function

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.

Functions in the diagnostic tool related to the fault:

Test value:

Wheel Speed RF

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