Acceleration control (accelerator) (Focus 1)

Contents: Inspection and verification ↳ Table of signs of malfunction ↳

The acceleration control system consists of an accelerator pedal and an accelerator cable. The driver, pressing the accelerator pedal, installed in the passenger compartment and connected by a cable to the throttle body, gives a command to the throttle valve. The return of the pedal to its original position is ensured by the return spring of the throttle valve.

Inspection and verification

1. Clarify the customer's complaint by checking whether the system is working properly.

2. Perform a visual inspection for obvious signs of mechanical damage.

Visual inspection table

Mechanical factors:

Throttle body
Accelerator pedal
Accelerator cable

3. If an obvious cause for the problem you have identified or the customer has described is found, correct it (if possible) before proceeding with further actions.

4. If the problem is not visually obvious, check the symptom and refer to the Symptom Table.

Table of signs of malfunction

State	Possible Causes	Action
•High effort or feeling of uneven running/sticking when pressing the accelerator pedal	•Incorrect installation of the accelerator cable	•Check that the accelerator cable is installed correctly.
	•Damage to the accelerator cable	•Install a new accelerator cable. Vehicles with 1.6L Zetec-SE/1.4L engine. For more information, refer to Accelerator Cable - 1.6L Zetec-SE/1.4L available in this section. Vehicles with 1.6L Duratec engine. For more information, refer to Accelerator Cable - 1.6L Duratec available in this section. Vehicles with 1.8L/2.0L/1.6L Zetec-E engine. For more information, refer to Accelerator Cable - 1.8L/2.0L/1.6L Zetec-SE available in this section. Vehicles with 2.0L Duratec ST engine. For more information, refer to Accelerator Cable - 2.0L Duratec ST available in this section.
	•Worn or damaged throttle body	•INSTALL a new throttle body. Vehicles with 1.6L Zetec-SE/1.4L engine. Refer to Section 303-04A / 303-04B / 303-04C / 303-04D / 303-04E / 303-04F / 303-04G for additional information. Vehicles with 1.6L Duratec engine. Vehicles with 1.8L/2.0L/1.6L Zetec-E engine. Vehicles with 2.0L Duratec ST engine
•The accelerator pedal does not return freely	•Incorrect installation of the accelerator cable	•Check that the accelerator cable is installed correctly.
	•Damage to the accelerator cable	Install a new accelerator cable. Vehicles with 1.6L Zetec-SE/1.4L engine. For more information, refer to Accelerator Cable - 1.6L Zetec-SE/1.4L available in this section. Vehicles with 1.6L Duratec engine. For more information, refer to Accelerator Cable - 1.6L Duratec available in this section. Vehicles with 1.8L/2.0L/1.6L Zetec-E engine. For more information, refer to Accelerator Cable - 1.8L/2.0L/1.6L Zetec-SE available in this section. Vehicles with 2.0L Duratec ST engine. For more information, refer to Accelerator Cable - 2.0L Duratec ST available in this section.
	•Worn or broken throttle return spring	•INSTALL a new throttle body. Vehicles with 1.6L Zetec-SE/1.4L engine. Refer to Section 303-04A / 303-04B / 303-04C / 303-04D / 303-04E / 303-04F / 303-04G for additional information. Vehicles with 1.6L Duratec engine. Vehicles with 1.8L/2.0L/1.6L Zetec-E engine. Vehicles with 2.0L Duratec ST engine
State	Possible Causes	Action
•High engine crankshaft speed at idle	•Incorrect installation of the accelerator cable	•Check that the accelerator cable is installed correctly.
	•Damage to the accelerator cable	•Install a new accelerator cable. Vehicles with 1.6L Zetec-SE/1.4L engine. For more information, refer to Accelerator Cable - 1.6L Zetec-SE/1.4L available in this section. Vehicles with 1.6L Duratec engine. For more information, refer to Accelerator Cable - 1.6L Duratec available in this section. Vehicles with 1.8L/2.0L/1.6L Zetec-E engine. For more information, refer to Accelerator Cable - 1.8L/2.0L/1.6L Zetec-SE available in this section. Vehicles with 2.0L Duratec ST engine. For more information, refer to Accelerator Cable - 2.0L Duratec ST available in this section.
	•Worn or damaged throttle body	•INSTALL a new throttle body. Vehicles with 1.6L Zetec-SE/1.4L engine. Refer to Section 303-04A / 303-04B / 303-04C / 303-04D / 303-04E / 303-04F / 303-04G for additional information. Vehicles with 1.6L Duratec engine. Vehicles with 1.8L/2.0L/1.6L Zetec-E engine. Vehicles with 2.0L Duratec ST engine