T8 / P0501 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general)
Cruise control not working.
Message appears in display.
TCS/ESP lamp light in dashboard.
Vehicle Speed, Incorrect Signal
Fault symptom
Fault indicator lamp (for further information see WIS Fault diagnosis, general)
Cruise control not working.
Message appears in display.
TCS/ESP lamp light in dashboard.
On-board diagnosis
Type of diagnosis:
Enable criteria:
| Motor running more than 3 s. |
| Battery voltage must be between 6 - 18 V. |
| NONE of the following DTCs must be detected: |
Fault criteria:
| No or faulty vehicle speed signal from TCS/ESP for 2 s. |
Dependent:
System reaction to a fault:
| The control module uses the signal from the right rear wheel sensor for continued function. |
OK report:
| Fault criteria NOT fulfilled for 3 s. |
Fault handling:
| (See section Fault handling III, "Other emission-related components and functions" for more information.) |
Diagnostic help
Diagnosis regards:
| Wheel sensor fault or internal TCS/ESP fault |
| See fault diagnosis for the TCS/ESP DTC in question and bus fault diagnosis. |
Functions in the diagnostic tool related to the fault:
| (See also description of readings/activations in diagnostic tool) |
