TCS / C0040 2A

Read the instructions below then start the fault diagnostic procedure.

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

C0040 2A

Fault symptom

ABS 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:

Sensor sends unrealistic vehicle speed signals (within 150 ms) to the control module.

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)