Ldte Speed Setting - Honda Civic Service Manual

ldle Control System
ldle Speed Setting
Inspection/Adiustmenl
'96, '97 Dl6Y5. '96 - 00 Dl5Y8
sngine with M/T
NOTE:
. B e f o r e s e t t i n g t h e i d l e s p e e d , c h e c k t h e f o l l o w i n g
items:
- The MIL has not been reported on.
-
l g n i t i o n t i m i n g
-
Spark plugs
- A i r c l e a n e r
-
PCV system
o ( C a n a d a ) P u l l t h e p a r k i n g b r a k e l e v e r u p . S t a r t t h e
engine, then check that the headlights are off.
1. Start the engine. Hold the engine at 3.000 rpm with
no load (taansmission in neutral) until the radiator
fan comes on, then let it idle.
2. Connect a tachometer.
3. Disconnect the IAC valve connector.
4. lf the engine stalls, restart the engine with the accel-
erator pedal slightly depressed. Stabilize the rpm at
1,000, then slowly release the pedal until the engine
idles.
Check idling in no-load conditionsr headlights. blower
fan. rear defogger, radiator fan, and air conditioner
are not operating.
ldle spsed should be:
450 1 50 rpm
11-220
Adjust the idle speed, if necessary, by removing the
cap and turning the idle adjusting screw.
NOTE; After adjusting the idle speed in this step,
recheck the ignition timing (see section 23).
lf it is out of spec, go back to step 4.
IDLE
6. Turn the ignition switch OFF.
7. Reconnect the 2P connector on the IAC valve, then
do the ECM reset procedure.
8. Restart and idle the engine with no-load conditions
for one minute, then check the idle speed.
N O T E : ( C a n a d a ) P u l l t h e p a r k i n g b r a k e l e v e r u p .
Start the engine, then check that the headlights are
off.
ldle sp€sd should b€:
670 i 50 rpm IUSA)
750 t 50 rpm {Canada}
9. ldle the engine tor one minute with headlights {Low)
ON. and check the idle speed.
ldle speed should be:
750 :r 50 rpm
1 0 . T u r n t h e h e a d l i g h t s o f f . l d l e t h e e n g i n e f o r o n e
minute with heater fan switch at Hl and air conditioner
on, then check the idle speed.
ldle speed should be:
8 1 0 1 5 0 r p m
NOTE: lf the idle speed is not within specification,
see Symptom Chan on page 11-84.