Legend Sedan V6-2494cc 2.5L SOHC FI (1987)
Idle Speed: Adjustments
Sedan
Idle speed Inspection/Adjustment
1. Start the engine and warm it up to normal operating temperature (the cooling fan comes on).
2. Connect a tachometer.
3. Set the steering in the straight forward condition, and check idling in no-load conditions in which the headlights, blower fan, rear defroster, cooling
fan, and air conditioner are not operating.
Idle speed should be:
Manual: 720 ± 50 rpm
Automatic: 720 ± 50 rpm in [N] or [P]
4. Check the Yellow LED display at the ECU under the passenger's seat.
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If Yellow LED is off
Do not adjust idle adjusting screw.
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If Yellow LED is blinking
Adjust idle adjusting screw 1/4 turn clockwise.
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If Yellow LED is on
Adjust idle adjusting screw 1/4 turn counterclockwise.
NOTE:
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This lamp may be lit at earlier stages, for example, when the distance covered is within 310 miles (500 km) (new engine). However, no
adjustment should be made.
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Check that the Yellow LED goes off after approximately 30 seconds.
If it does not go off, rotate the idle adjusting screw by 1/4 turn in the same direction, and repeat the same operation until the Yellow LED goes
off.
5. Check the idle speed in the following conditions.
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With headlights (Hi) and rear window defogger ON.
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While the steering wheel is turning.
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With air conditioner compressor on.
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If, applicable, with Automatic transmission model when shifted in gear (except "P" or "N").
Idle should remain stable at: 720 ± 50 rpm