Accelerator Pedal Sensor 2012 Toyota Prius V

2012 Toyota PriusI have a 2012 Toyota Prius V. As I am traveling along my engine accelerates or engine revs. The only way for me to stop this is to step on the gas pedal.


RESPONSE

I consider this as a severe safety issue. Sounds like your accelerator is sticking. This may be from a faulty accelerator pedal sensor. Testing will require a capable scan tool. You may need to take this to a Toyota dealer because not every local shop will have one for a Prius.

Accelerator Pedal Sensor On-Vehicle Inspection

1. INSPECT ACCELERATOR PEDAL ASSEMBLY

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Hybrid Control / Data List / Accel Pedal Pos #1, Accel Pedal Pos #2.

(e) Read the Data List.

Result:

Tester Display

Accelerator Pedal Condition

Specified Condition

Accel Pedal Pos #1

Not depressed

(8 to 28%) 0.4 to 1.4 V

Fully depressed

(62 to 92%) 3.1 to 4.6 V

Not depressed → Fully depressed → Not depressed (Accelerator pedal should be operated slowly)

Value changes progressively as shown in the illustration

Accel Pedal Pos #2

Not depressed

(20 to 44%) 1.0 to 2.2 V

Fully depressed

(78 to 100%) 3.9 to 5.0 V

Not depressed → Fully depressed → Not depressed (Accelerator pedal should be operated slowly)

Value changes progressively as shown in the illustration

Remove Accelerator Pedal Assembly

accelerator pedal sensor
(a) Disconnect the accelerator pedal assembly connector.
(b) Remove the 2 bolts and accelerator pedal assembly.