2009 Volvo S80 V8FACTORY OEM SERVICE PROCEDURE

Pedal Position Sensor 7/124: Notes

Fig 1: Identifying Brake Pedal Position Sensor
GLL140023Courtesy of VOLVO CARS CORPORATION

Type 

Slide potentiometer.

The sensor is actuated by the brake pedal pushrod

characteristic 

Resistance between terminals #2 and #3 should be approx. 0.5 kΩ when the brake pedal is not actuated. Resistance should increase when the brake pedal is depressed.

Resistance between terminals #3 and #1 should be approx. 2.5 kΩ when the brake pedal is not actuated. Resistance should decrease when the brake pedal is depressed.

Upon ignition, voltage should be:

0 mm ≈ 0.15 V (brake pedal not actuated)

38.5 mm ≈ 4.75 V (brake pedal depressed)

Other information 

None.

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.