Focus Fanatics - View Single Post - 2003 cruise control shuts off
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Old 06-18-2011, 11:21 PM   #22
BC_ZX3
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Join Date: Jul 2007
Fan#: 48751
Location: Vancouver, BC, Canada
What I Drive: 2001 Red ZX3 Turbo

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My documentation indicates 4 flashes indicates the Vehicle Speed Sensor (VSS) or circuitry may be faulty or the cruise control speed control actuator itself may need attention.
Auto or manual vehicle? The VSS is located on the passenger side of the diff on manual gear boxes. If your speedometer isn't acting up, it's likely the VSS communication between the ECU and the speed control actuator. The actuator compares the speed recorded by the ECU against the desired cruise speed and opens the throttle accordingly.
The speed control actuator is behind the LH headlamp. Try removing and cleaning the electrical connector.
Wheel speed sensors are irrelevant; they are used by the ABS braking system, if fitted.
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