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T8 / P0704 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Cruise control not working.

  P0704 00


Clutch Switch Input Circuit Malfunction

Fault symptom

Cruise control not working.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Battery voltage must be between 11 - 16 V.
Manual gearbox.
Vehicle speed has not been reduced from 50 to 3 km/h (31 to 2 mph) within a period of 2 s.

Fault criteria:

No status change for the clutch switch when vehicle speed has increased from 3 - 50 km/h (2 - 31 mph).
A DTC is generated if this occurs 4 consecutive times.

Dependent:

None

System reaction to a fault:

Cruise control switched off.

OK report:

Status change for the clutch 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:
Clutch Switch

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