Pedal Position Sensor 7/124

GENERAL 

Courtesy 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.

TERMINAL 

Courtesy of VOLVO CARS CORPORATION

Connector terminal	Control module terminal	Signal type	Ignition on	Miscellaneous
#1	#26	Power supply	U = 5 V	The sensor receives 5 V from the control module.
#2	#27	Signal ground	U = 0 V
#3	#38	Signal voltage	U = 0.15 - 4.85 V

CHECK 

Prerequisites (unless otherwise specified)

• Breakout box connected
• Sensor connected
• Ignition switch position II

Check 1 

Voltage between terminals #A3 and #A21 should be ≈0.15 V when the brake pedal is not actuated and up to ≈4.85 V when the brake pedal is depressed.