25 A/C Is Not Cut Off Under Wide Open Throttle Conditions [Z6] - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
• AC_REQ PID should read Off when
turning A/C switch off. If AC_REQ PID
remains On, short to GND may be
present.
Does AC_REQ PID remain On?
Verify test results.
• If normal, return to diagnostic index to service any additional symptoms.
(See ENGINE SYMPTOM TROUBLESHOOTING
• If malfunction remains, inspect related Service information perform repair or diagnosis.
5
- If vehicle repaired, troubleshooting completed.
- If vehicle not repaired or additional diagnostic information not available, replace the
PCM.
(See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION
NO.25 A/C IS NOT CUT OFF UNDER WIDE OPEN
THROTTLE CONDITIONS [Z6]
25
The A/C compressor magnetic clutch does not disengage under WOT.
DESCRIPTION
• TP sensor malfunction
• TP sensor misadjustment
POSSIBLE CAUSE
• Loosely installed TP sensor
Diagnostic procedure
STEP INSPECTION
Does the A/C compressor disengage
1
when the A/C switch is turned off?
Connect WDS or equivalent to DLC-2.
Retrieve any continuous memory,
2
KOEO and KOER DTCs using WDS or
equivalent.
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A/C IS NOT CUT OFF UNDER WOT CONDITIONS.
RESULTS
Yes
No
Yes
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Inspect for stuck closed the A/C
No
switch.
[Z6].)
[Z6].)
ACTION
Go to the next step.
Go to symptom troubleshooting "No.24 A/C is
always on or A/C compressor runs
continuously".
(See NO.24 A/C IS ALWAYS ON OR A/C
COMPRESSOR RUNS CONTINUOUSLY
[Z6].)
DTC is displayed:
Go to the appropriate DTC inspection.
(See DTC TABLE [Z6].)
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