P0704

Read the instructions below then start the fault diagnostic procedure.

Symptom: Cruise control not working. Drivability problems

P0704

Fault symptoms

•	Cruise control not working.

•	Drivability problems

On-Board Diagnostics

Type of diagnosis:

-	Continuous.

Enable criteria:

-	Battery voltage should be 10.2 - 15.3 V.

-	Vehicle speed has exceeded a speed of 49 km/h and been reduced to 0 km/h 3 times with a deceleration of 1.6 m/s² (somewhat heavy braking).

Fault criteria:

-	Clutch signal has not been detected when the above enable criteria have been fulfilled 3 times.

Dependents:

-

None.

System reaction to a fault:

-	Cruise control not working.

OK report:

-	Clutch signal has been detected 3 consecutive times when the above enable criteria have been fulfilled 3 times.

Fault handling: (See section Fault handling III, other emissions-related components and functions for more information)

-	Fault handling III, other emissions-related components and functions

Diagnostic help

Fault diagnosis concerns an electrical fault in the connecting leads or in the switch.

Functions in the diagnostic tool related to the fault:

-	Read value: Clutch Switch. Cruise Control

See also description of read value under "Read Values" menu for more information.

Checking the wiring

Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short circuits. Observe the multimeter, diagnostic tool or test lamp during the check.