Variable Intake-Air Control Operation Inspection - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
• RPM
Note
• Excludes temporary idle speed drop just after the loads are turned on.
7. Verify that the engine speed is within the specification under each load condition.
• If not as specified under each load condition, inspect the following.
- A/C switch and related wiring harness.
- Fan switch and related wiring harness (See
- PSP switch and related wiring harness.
Engine speed
Load condition
No load
38-48 A
*2
E/L operating
more than 48 A
Refrigerant pressure low
*3
A/C operating
Refrigerant pressure high
*1 :
Neutral or P position
*2
:
Generator generating current value
*3
:
A/C switch and fan switch are on.
*4
:
Refrigerant pressure switch (middle pressure) is off.
*5
:
Refrigerant pressure switch (middle pressure) is on.

Variable Intake-air Control Operation Inspection

1. Start the engine.
2. Inspect the rod operation under the following condition.
Rod operation
Engine speed
Downloaded from
Engine speed (rpm)
600-700
650-750
700-800
*4
700-800
*5
700-800
4,750 rpm
Less than More than
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FAN SWITCH INSPECTION.)
*1
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