ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [MZ-CD 1.6 (Y6)]

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Visual Inspection

1.  Remove the APP. (See ACCELERATOR PEDAL (APP) REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].)

2.  Verify that there are no metal shavings on the sensor.

3.  Visually inspect the APP sensor for the following:

•  Damage

•  Cracks

•  Rusted sensor terminal

•  Bent sensor terminal

―  If there is any malfunction, replace the APP sensor.

4.  Install the APP. (See ACCELERATOR PEDAL (APP) REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].)

Voltage Inspection

1.  Connect the oscilloscope to the accelerator pedal connector terminal E and body ground.

2.  Turn the engine switch to the ON position (Engine off).

3.  Verify that the duty ratio at terminal E changes while operating the accelerator pedal as shown in the graph.

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•  If it is not as specified, replace the accelerator pedal.

Specification

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Resistance Inspection

1.  Disconnect the APP sensor connector.

2.  Measure the resistance between terminals A and C.

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•  If it is not as specified, replace the APP sensor.

Circuit Open/Short Inspection

1.  Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].)

2.  Inspect the following wiring harness for an open or short circuit (continuity check).

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Open circuit

•  If there is no continuity, there is an open circuit. Repair or replace the wiring harness.

―  APP sensor terminal A and instrument cluster terminal 2X

―  APP sensor terminal B and instrument cluster terminal 2T

―  APP sensor terminal C and instrument cluster terminal 2R

―  APP sensor terminal D and ground

―  APP sensor terminal E and PCM terminal 310

―  APP sensor terminal F and PJB terminal Q

Short circuit

•  If there is continuity, there is a short circuit. Repair or replace the wiring harness.

―  APP sensor terminal A and power supply

―  APP sensor terminal A and body ground

―  APP sensor terminal B and power supply

―  APP sensor terminal B and body ground

―  APP sensor terminal C and power supply

―  APP sensor terminal C and body ground

―  APP sensor terminal D and power supply

―  APP sensor terminal D and body ground

―  APP sensor terminal E and power supply

―  APP sensor terminal F and body ground