Mazda MX-5 Miata Sport 2007 Manual page 2038

2007 ENGINE PERFORMANCE Symptom Troubleshooting - MX-5 Miata
5
NO.25 A/C DOES NOT CUT OFF UNDER WIDE OPEN THROTTLE
CONDITIONS [LF]
POSSIBLE CAUSE & DESCRIPTION (A/C DOES NOT CUT OFF UNDER WIDE OPEN THROTTLE
CONDITIONS)
DESCRIPTION
POSSIBLE CAUSE
DIAGNOSTIC PROCEDURE
A/C DOES NOT CUT OFF UNDER WIDE OPEN THROTTLE CONDITIONS DIAGNOSTIC
PROCEDURE TABLE
STEP
1
2007 Mazda MX-5 Miata Sport
present.
Does A/C remain
working?
Verify test results.

If normal, return to diagnostic index to service any additional

symptoms.
(See ENGINE SYMPTOM TROUBLESHOOTING [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] .)
25
INSPECTION
Does A/C compressor
disengage when the A/C
switch is turned off?
No
A/C DOES NOT CUT OFF UNDER WOT
CONDITIONS.
A/C compressor magnetic clutch does not disengage
under WOT.
Accelerator pedal position sensor malfunction

Accelerator pedal position sensor

misadjustment
Loosely installed accelerator pedal position

sensor
RESULTS
Yes
No
Inspect whether A/C
switch is stuck closed.
ACTION
Go to the next step.
Go to symptom
troubleshooting NO.24
A/C IS ALWAYS ON