Idle Speed Inspection
NOTE:
- Before checking the idle speed, check these items:
- The malfunction indicator lamp (MIL) has not been reported on, and there are no DTCs.
- Ignition timing
- Spark plugs
- Air cleaner
- PCV system
- Apply the parking brake, and make sure the headlights are off.
- Disconnect the evaporative emission (EVAP) canister purge valve connector (see step 1 on EVAP CANISTER PURGE VALVE REPLACEMENT ).
- Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
- Make sure the HDS communicates with the PCM. If it doesn't, go to DLC CIRCUIT TROUBLESHOOTING .
- Start the engine. Hold the engine speed at 3,000 RPM without load (in P or N) 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: 700 ± 50 RPM (in P or N)
- Let the engine idle for 1 minute with high electric load (A/C switch ON, temperature set to max cool, blower fan on high, and headlights on high beam).
Idle speed should be: 700 ± 50 RPM (in P or N)
NOTE: If the idle speed is not within specification, do PCM IDLE LEARN PROCEDURE . If the idle speed is still not within specification, go to the symptom troubleshooting. - Reconnect the EVAP canister purge valve connector.