2008 - MX-5 - Engine

ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [LF]

NOTE:

• Before performing the following inspection, make sure to follow the procedure as indicated in the troubleshooting flowchart. (See HOW TO USE THIS MANUAL.)

1. Connect the M-MDS to the DLC‐2.

2. Turn the ignition switch to the ON position.

3. Select APP1 and APP2 PID on the M-MDS.

4. Verify that the APP1 and APP2 PID is within the specification when the accelerator pedal not depressed. (See PCM INSPECTION [LF].)

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [LF].)

2. Disconnect the APP sensor connector.

3. Inspect the following wiring harnesses for an open or short circuit. (Continuity inspection)

Open circuit

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

• APP sensor terminal A and PCM terminal 1AJ

• APP sensor terminal B and PCM terminal 1AV

• APP sensor terminal C and PCM terminal 1AP

• APP sensor terminal D and PCM terminal 1AL

• APP sensor terminal E and PCM terminal 1AS

• APP sensor terminal F and PCM terminal 1AO

Short circuit

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

• APP sensor terminal A and body ground

• APP sensor terminal B and power supply

• APP sensor terminal C and body ground

• APP sensor terminal C and power supply

• APP sensor terminal D and body ground

• APP sensor terminal E and power supply

• APP sensor terminal F and body ground

• APP sensor terminal F and power supply