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Home >> Mazda >> 2001 >> MPV ES V6-2.5L DOHC >> Repair and Diagnosis >> Powertrain Management >> Tune-up and Engine Performance Checks >> Idle Speed >> Testing and Inspection
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Idle Speed: Testing and Inspection

ENGINE TUNE-UP
Engine Tune-up Preparation
1. Warm up the engine to normal operating temperature.
2. Shift the transaxle into neutral.
3. Turn off all electrical loads.
- Headlight
- Blower fan
- Rear window defroster
- A/C
4. Verify that the steering wheel is in the straight ahead position.





5. Connect the SST (NGS tester) to the DLC-2 and select "PID DATA MONITOR AND RECORD".

Idle Speed Inspection
1. Perform "Engine Tune-up Preparation".





2. Short the DLC terminal TEN to body GND using a jumper wire.
3. Verify that the RPM PID is within the specification.
- If not as specified with all load conditions, inspect the IAC valve.
- If not as specified with some load condition, inspect the related input switches, harnesses, and connectors.





Specification
*1 Excludes temporary idle speed drop just after the electrical loads (E/L) are turned on.
*2 Headlight is on, Fan switch is above 1st, Cooling fan is operating, Rear window defroster is on.
*3 Steering wheel is fully turned.
*4 A/C switch an fan switch are on.
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