ACCELERATOR PEDAL POSITION SENSOR (APS)

Description and Operation

Description

The accelerator position sensor (APS) is installed on the accelerator pedal module and detects the angle of the accelerator pedal. The APS is one of the most important sensors in the engine control system. It includes two sensors that are individually supplied with power and grounded. The second sensor monitors the first sensor, and its output voltage is half that of the first sensor. If the signals of sensors 1 and 2 are outside the allowable range (approx. 1/2), the diagnostic system determines that a malfunction has occurred.

Specifications

Specification

ACCELERATOR Position	Output voltage (V)
	APS 1	APS 2
THA	0,7~0,8	0,33~0,43
THW	3,85~4,35	1,93~2,18

Circuit Diagrams

Wiring Diagram

(B)

(MT)

Repair Procedures

Inspection

1. 1
   Connect the GDS to the Data Link Connector (DLC).
2. 2
   Start.
3. 3
   Measure the APS 1 and 2 output voltage with the THROTTLE VALVE CLOSED and FULLY OPEN.

   Specification: Refer to "Specifications"

DEPOSIT

1. 1
   Turn the ignition key to the OFF position and disconnect the negative (-) battery cable.
2. 2
   Disconnect the throttle position sensor connector (A).
3. 3
   Remove the mounting bolt (B) and nuts (C), then remove the accelerator pedal module.

   

REMEDY

1. To install, reverse the removal procedure. Accelerator pedal module nut: 12.8~15.7 N·m Accelerator pedal module bolt: 8.8–13.7 N·m