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Home >> Mazda >> 1995 >> Protege L4-1.5L 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

Preparation
1. Warm up the engine to normal operating temperature.
2. Shift the transaxle into Neutral (MTX) or P position (ATX).
3. Turn off all electrical loads.
- Headlight
- Blower motor
- Rear window defroster
- Power steering
4. Wait until the coolant fan stops.

Idle Speed
1. Perform "Preparation".

2. Connect a tachometer to the data link connector terminal IG-.




3. Connect the data link connector terminals TEN and GND by using a jumper wire.
4. Check idle speed.

Specification: 650-750 (700 ±50) rpm [MTX]
700-800 (750 ±50) rpm [ATX]

Idle Up Speed
1. Perform "Preparation".
2. Connect a tachometer to the data link connector terminal IG-.
3. Verify that the idle speed is within the specification.

Specification: 650-750 (700 ±50) rpm [MTX]
700-800 (750 ±50) rpm [ATX]




5. Check the idle speed with the load conditions shown in the image.
6. If not as specified with all load condition, inspect the idle air control valve.
If not as specified with some load condition, check related input switches, harnesses and connectors.
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