Mazda 3 - 10 Low Idle;Stalls During Deceleration [Z6]

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
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477
PSP PID:
Inspect the PSP switch.
(See POWER STEERING PRESSURE
(PSP) SWITCH INSPECTION [Z6].)
4
Is there air leakage felt or heard at the
intake-air system components while
racing the engine to higher speed?
Yes
Repair or replace part if necessary.
No
Verify accelerator cable free play.
(See ACCELERATOR CABLE
INSPECTION/ADJUSTMENT [Z6].)
5
Verify test results.
• If normal, return to diagnostic index to service any additional symptoms.
(See ENGINE SYMPTOM TROUBLESHOOTING [Z6].)
• If malfunction remains, inspect related Service information perform repair or diagnosis.
- If vehicle repaired, troubleshooting completed.
- If vehicle not repaired or additional diagnostic information not available, replace the
PCM.
(See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [Z6].)
NO.10 LOW IDLE/STALLS DURING DECELERATION
[Z6]
B3E010318881W43
10
LOW IDLE/STALLS DURING DECELERATION
DESCRIPTION
• The engine stops unexpectedly at the beginning of deceleration or recovery from
deceleration.
POSSIBLE
CAUSE
• Vacuum leakage
• IAC valve malfunction
• Air leakage from intake-air system
• Improper air/fuel mixture ratio control
• Evaporative emission control system malfunction
• TP sensor misadjustment
• TP sensor or related circuit malfunction
• MAF sensor or related circuit malfunction
• Brake switch or related circuit malfunction
• Neutral/clutch pedal position switch or related circuit malfunction (MTX)
• TR switch or related circuit malfunction (ATX)