T8 / P0724 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.
Brake Light Switch Circuit. Open / Short to B+.
Fault symptom
Fault indicator lamp (for further information see WIS Fault diagnosis, general)
Cruise control not working.
On-board diagnosis
Type of diagnosis:
Enable criteria:
| Battery voltage must be between 11 - 16 V. |
Fault criteria:
| When vehicle speed increases from 3 - 40 km/h (2 - 25 mph) within a period of 2 - 12 sec. when read value on the input is "ON". |
| A DTC is generated if this occurs 4 consecutive times. |
Dependent:
System reaction to a fault:
| Cruise control switched off. |
OK report:
| Status change for the brake pedal switch has occurred. |
Fault handling:
| (See section Fault handling III, "Other emission-related components and functions" for more information.) |
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:
| (See also description of readings/activations in diagnostic tool) |
