Idle Speed Inspection
NOTE:
- Leave the idle air control (IAC) valve connected.
- Before checking the idle speed, check these items:
- The malfunction indicator lamp (MIL) has not been reported on.
- Ignition timing
- Sparkplugs
- Air cleaner
- PCV system
- Pull the parking brake lever up. Start the engine, and make sure the headlights are off.
- Disconnect the evaporative emission (EVAP) canister purge valve 2P connector.
- 2002-2004 models: Connect a tachometer (A) to the test tachometer connector (B), or connect the HDS or a scan tool to the data link connector (DLC) (C) located under the driver's side of the dashboard.
2002-2004 models
Courtesy of AMERICAN HONDA MOTOR CO., INC.
2002-2006 models
- 2005-2006 models: Connect the HDS to the data link connector (DLC) under the driver's side of the dashboard.
- Start the engine. Hold the engine speed at 3,000 RPM without load (in Park or neutral) until the radiator fan comes on, then let it idle.
- Check the idle speed without load conditions: headlights, blower fan, radiator fan, and air conditioner off.
Idle speed should be:
K20A2 engine: 700+/-50 RPM
K20A3 engine:
IDLE SPEED SPECIFICATIONM/T 700+/-50 RPM A/T 700+/-50 RPM (in Park or neutral) K20Z1 engine: 800+/-50 RPM
- Let the engine idle 1 minute with high electric load (A/C switch ON, temperature set to Max Cool, blower fan on High, rear window defogger ON, and head lights on high beam).
Idle speed should be:
K20A2 engine: 780+/-50 RPM
K20A3 engine-2002-2004 models:
IDLE SPEED SPECIFICATIONM/T 720+/-50 RPM A/T 720+/-50 RPM (in Park or neutral) K20Z1 engine: 850+/-50 RPM
K20A3 engine-2005-2006 models:
IDLE SPEED SPECIFICATIONM/T 700+/-50 RPM A/T 700+/-50 RPM (in Park or neutral) NOTE: If the idle speed is not within specification, do the ECM/PCM idle learn procedure, 2002-2004 models (see ECM/PCM IDLE LEARN PROCEDURE ), 2005-2006 models (see ECM/PCM IDLE LEARN PROCEDURE ). If the idle is still out of specification, go to the symptom troubleshooting. - Reconnect the EVAP canister purge valve 2P connector.