Mazda 323 1988 Workshop Manual page 306

Mazda 323 1988
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4B
IDLE SPEED
CONTROL
IISC) SYSTEM
System Inspection
1. Connect the jumper wire between the test connec-
tor (Green: 1 pin) and ground.
2. Disconnect the BAC valve connector.
3. Start the engine and run it at idle.
Note
When the BAC valve is disconnected,
the en-
gine speed will be reduced, which is normal.
4. Pinch the air hose and note the engine speed.
Cold engine: Engine speed drops
Warm engine:
Engine speed unchanged
5. Connect the BAC valve connector.
6. Disconnect the jumper wire.
7. Warm up the engine to normal operating temper-
ature and run it at idle.
8. Check that the idle speed is correct.
9. Connect the jumper wire between the test connec-
tor and ground.
10. Disconnect the BAC valve connector.
11, Check that the engine speed decreases.
12. Reconnect the BAC valve connector.
48-34
323 Revised 10187

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