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

Visual Inspection

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

4. Install the APP. (SeeACCELERATOR 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.

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

Specification

APP sensor duty ratio (reference)

Resistance Inspection

1. Disconnect the APP sensor connector.

2. Measure the resistance between terminal A and C.

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

APP sensor resistance

Approx. 5 kilohms

Circuit Open/Short Inspection

1. Remove the PCM connector cover.

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

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

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