Idle Speed Control (Isc) System (Turbo) Inspection - Mazda 626 MX-6 Workshop Manual

4B
ISC SYSTEM
Test connector Green
t
4B-48
System Inspection
(Air valve)
1. Disconnect the ISC valve connector when the en­
gine is cold and idling.
2. Note the engine speed and reconnect the con­
nector.
3. Warm up the engine to the normal operating tem­
perature and disconnect the connector again.
4. Check that the engine speed is lower when the
connector is disconnected warm than when it is
disconnected when cold.
§
86U04B-036
(ISC valve)
5. Connect the ISC valve connector.
Note
Make sure that the test connector is not
grounded and that the idle speed is set to
specification.
86U04A-061
6. Again disconnect the ISC valve connector with the
engine is at normal operating temperature.
7. Check that the engine speed decreases.
8. Reconnect the ISC valve connector.
86U04B-153