Accelerator Pedal Position (App) Sensor Assembly Inspection

Reference: ACCELERATOR PEDAL POSITION (APP) SENSOR ASSEMBLY REMOVAL AND INSTALLATION 

Check accelerator pedal position (APP) sensor (main and sub) output voltage as following steps.

1. For accelerator pedal position (APP) sensor (main), arrange 3 new 1.5 V batteries (1) in series (check that total voltage is 4.7 - 5.0 V) and connect its positive terminal to "Vin 1" terminal (2) and negative terminal to "Ground 1" terminal (3) of sensor. Then using voltmeter, connect positive terminal to "Vout 1" terminal (4) of sensor and negative terminal to battery.
   Fig 1: Testing APP Sensor

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2. For accelerator pedal position (APP) sensor (sub), arrange 3 new 1.5 V batteries (1) in series (check that total voltage is 4.7 - 5.0 V) and connect its positive terminal to "Vin 2" terminal (2) and negative terminal to "Ground 2" terminal (3) of sensor. Then using voltmeter, connect positive terminal to "Vout 2" terminal (4) of sensor and negative terminal to battery.
   Fig 2: Checking Voltage Between APP Sensor Terminal No. 4 & Test Battery Negative

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3. Measure output voltage variation while accelerator pedal is no depressed and fully depressed as following specification.

If sensor voltage is out of specified value or does not vary linearly as the following graph, replace accelerator pedal position (APP) sensor assembly.

Accelerator pedal position (APP) sensor output voltage variation 

Accelerator pedal position (APP) sensor (main) output voltage variation [A]: 0.82 - 3.50 V at minimum variation, varying according to depressed extent of accelerator pedal 

Accelerator pedal position (APP) sensor (sub) output voltage variation [B]: 0.44 - 1.74 V at minimum variation, varying according to depressed extent of accelerator pedal 

Fig 3: Identifying Accelerator Pedal Position & Sensor Voltage Graph

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