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PRE-RELEASE

T8 / P0573 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Cruise control not working.

  P0573 00


Brake Switch Circuit, Open

Fault symptom

Cruise control not working.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Engine running.

Fault criteria:

When vehicle speed increases from 3 - 40 km/h (2 - 25 mph) within a period of 2 - 12 s when read value on the input is "OFF".

Dependent:

None

System reaction to a fault:

Cruise control switched off.

OK report:

Status change for the brake pedal switch has occurred.

Fault handling:

Type III without Check Engine.
(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:

Test value:
Brake Pedal Switch

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

PRE-RELEASE