APP Sensor Inspection

Remove accelerator pedal assembly, see ACCELERATOR PEDAL ASSEMBLY (INCORPORATING APP SENSOR) REMOVAL AND INSTALLATION .
Check APP sensor output voltage as follows.
If faulty condition is found, replace accelerator pedal assembly (incorporated with APP sensor), see ACCELERATOR PEDAL ASSEMBLY (INCORPORATING APP SENSOR) REMOVAL AND INSTALLATION .
1. Connect 3 new 1.5 V batteries (1) in series and check that total voltage is 4.5 - 5.0 V.
2. Connect voltmeter (2) and batteries to APP sensor as shown in figure.
  
  Fig 1: Checking APP Sensor Output Voltage
  Courtesy of SUZUKI OF AMERICA CORP.
3. Check that voltage varies depending on accelerator opening angle as the following graph.

Fig 2: APP Sensor Voltage Graph

Courtesy of SUZUKI OF AMERICA CORP.