nsxe11084a.pdf

Idle Control System
Idle Speed Setting
Inspection/Adjustment
1. Start the engine and warm it up to normal operating
temperature (the cooling fan comes on).
2. Connect a tachometer.
Connect a tachometer to loop of igniter unit
secondary, or…
3. Disconnect the 2P connector from the EACV.
EACV
TACHOMETER
IGNITER
UNIT
4. Start the engine with the accelerator pedal slightly
depressed, then turn the headlights and rear defog-
ger ON. After the Check Engine light comes on,
stabilize the rpm at 1000, then slowly release the
pedal until the engine idles.
If the engine stalls, turn the idle adjusting screw
one turn counterclockwise and recheck.
5. Check idling with the headlights and rear defogger
on.
Idle speed should be:
Remove the rubber cap from the tachometer
connector and connect a tachometer.
TACHOMETER
RUBBER
CAP
Adjust the idle speed, if necessary, by turning
the idle adjusting screw.
If the proper idle speed cannot be achieved,
clean the throttle body port with carburetor
cleaner.
IDLE ADJUSTING
SCREW
TACHOMETER
CONNECTOR

6. Turn the ignition switch OFF.
7. Reconnect the 2P connector on the EACV, then
remove CLOCK fuse in the under-hood fuse/relay
box for 10 seconds to reset ECU.
8. Restart and idle the engine with no-load conditions
in which the headlights, blower fan, rear defogger,
cooling fan, and air conditioner are not operating
for one minute, then check the idle speed.
Idle speed should be: