Mazda 3 Workshop Manual page 361

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
• Actual idle speed is lower than expected by 100 rpm for 14 s, when brake pedal is
depressed (brake switch is on) and steering wheel is held straight ahead (power
steering pressure switch is off).
Diagnostic support note
DETECTION
• This is a continuous monitor (CCM).
CONDITION
• The MIL illuminates if the PCM detects the above malfunction conditions in two
consecutive drive cycles or in one drive cycle while the DTC for the same
malfunction has been stored in the PCM.
• PENDING CODE is available if the PCM detects the above malfunction condition
during first drive cycle.
• FREEZE FRAME DATA is available.
• DTC is stored in the PCM memory.
• IAC valve malfunction
• Air cleaner element clogged
• Air intake passage clogged
• A/C relay control circuit malfunction
POSSIBLE
• Generator malfunction
CAUSE
• Purge solenoid valve malfunction
• Low engine compression (Over capacity of blow-by gas)
• PCM malfunction
Diagnostic procedure
STEP INSPECTION
VERIFY FREEZE FRAME DATA
HAS BEEN RECORDED
1
• Has FREEZE FRAME DATA
been recorded?
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
• Verify related service repair
2
information availability.
• Is any related repair information
available?
3
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Note
• If atmospheric pressure is less than 72.3 kPa {542 mmHg, 21.3 inHg} or
intake air temperature is below -10 °C {14 °F}, the PCM cancels diagnosis
of P0506.
Yes Go to the next step.
Record the FREEZE FRAME DATA on repair order,
No
then go to the next step.
Perform repair or diagnosis according to the available
repair information.
Yes
• If the vehicle is not repaired, go to the next step.
No Go to the next step.
Yes Repair the applicable DTCs.
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