Idle Speed Adjustment - Honda 2002 Accord Manual

Idle Control System
Idle Speed Adjustment
A d j u s t idle speed using the Honda PGM Tester
procedure, if possible. If not, use the f o l l o w i n g
procedure.
NOTE:
• Leave the IAC valve connected.
• Before setting the idle speed, check these items:
- The MIL has not been reported o n .
- Ignition t i m i n g
- Spark plugs
- Air cleaner
- PCV system
• On Canadian models, pull the parking brake lever up.
Start the engine, then check that the headlights are
off.
1. Disconnect the EVAP canister purge valve 2P
connector.
2. Connect a tachometer, or connect the Honda PGM
Tester (A) or an OBD II scan tool to the Data Link
Connector (DLC) (B) located under the driver's side
of the dashboard.
A
3. Start the engine. Hold the engine at 3,000 r p m w i t h
no load (in Park or neutral) until the radiator fan
comes on, then let it idle.
4. Check the idle speed w i t h no-load conditions:
headlights, blower fan, rear defogger, radiator f a n ,
and air conditioner off.
Idle speed should be:
M/T
700 ± 5 0 rpm
A/T 700 + 50 r p m (in Park or neutral)
5. Adjust the idle speed, if necessary, by turning the
idle adjusting screw (A) 1/4-turn clockwise or
counterclockwise.
NOTE: Do not turn the idle adjusting screw more
than 1/4-turn w i t h o u t checking the idle speed.
A
6. After turning the idle adjusting screw 1/4-turn,
check the idle speed again. If it is out of spec, turn
the idle adjusting screw 1/4-turn again.
7. Let the engine idle for 1 minute w i t h the heater fan
switch on HI and the air conditioner o n , then check
the idle speed.
Idle speed should be:
M/T 770 ± 5 0 r p m
A/T 7 7 0 ± 5 0 r p m (in Park or neutral)
NOTE:
• Do not turn the idle adjusting screw w h e n the air
conditioner is o n .
• If the idle speed is not w i t h i n specification, see
S y m p t o m Troubleshooting Index.
8. Reconnect the EVAP canister purge valve 2P
connector.
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