10 Low Idle/Stalls During Deceleration [Lf] - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
Connect the WDS or equivalent to the
DLC-2.
Access AC_REQ, CPP, CPP/PNP and
PSP PIDs.
Monitor each PID.
(See PCM INSPECTION
Are PIDs normal?
Is there air leakage felt or heard at the
4 intake-air system components while
racing engine to higher speed?
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 PCM REMOVAL/INSTALLATION
NO.10 LOW IDLE/STALLS DURING DECELERATION
10
• Engine stops unexpectedly at the beginning of deceleration or recovery from
DESCRIPTION
deceleration.
• Vacuum leakage
POSSIBLE
CAUSE
Downloaded from
No
[LF].)
Yes
No
[LF]
LOW IDLE/STALLS DURING DECELERATION
https://carmanualshub.com/
AC_REQ PID:
Inspect the A/C switch, refrigerant pressure
switch and the fan switch.
CPP PID:
Inspect the clutch pedal position switch.
(See CLUTCH PEDAL POSITION (CPP)
SWITCH INSPECTION
CPP/PNP PID:
Inspect neutral switch.
(See NEUTRAL SWITCH INSPECTION
[LF].)
PSP PID:
Inspect PSP switch.
Repair or replace part if necessary.
Verify the accelerator cable free play.
(See ACCELERATOR CABLE
INSPECTION/ADJUSTMENT
[LF].)
[LF].)
- automotive repair manuals website
[LF].)
[LF].)
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