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2008 - MX-5 - Engine

NO.25 A/C DOES NOT CUT OFF UNDER WIDE OPEN THROTTLE CONDITIONS [LF]



25

A/C DOES NOT CUT OFF UNDER WOT CONDITIONS.

DESCRIPTION

A/C compressor magnetic clutch does not disengage under WOT.

POSSIBLE CAUSE

  • Accelerator pedal position sensor malfunction

  • Accelerator pedal position sensor misadjustment

  • Loosely installed accelerator pedal position sensor


Diagnostic procedure

STEP

INSPECTION

RESULTS

ACTION

1

Does A/C compressor disengage when the A/C switch is turned off?

Yes

Go to the next step.

No

Go to symptom troubleshooting "No.24 A/C is always on or A/C compressor runs continuously".

2

Connect the M-MDS to the DLC-2.

Turn the ignition switch to the ON position (Engine off).

Retrieve any DTCs.

Are there any DTCs displayed?

Yes

DTC is displayed:

Go to the appropriate DTC inspection.

(See DTC TABLE [LF].)

No

No DTC is displayed:

Inspect accelerator pedal position sensor.

3

  • Verify test results.

    • If normal, return to diagnostic index to service any additional symptoms.

      (See SYMPTOM DIAGNOSTIC INDEX [LF].)

    • If malfunction remains, inspect related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.

      • If vehicle is repaired, troubleshooting completed.

      • If vehicle is not repaired or additional diagnostic information is not available, replace the PCM.

        (See PCM REMOVAL/INSTALLATION [LF].)




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