Ridgeline 2007-2008

Idle Speed

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Adjustment



Specific to:

Honda Ridgeline 2006-2008

Idle speed is maintained by the Powertrain Control Module (PCM). No adjustment is necessary or possible.

Inspection



Specific to:

Honda Ridgeline 2006-2008


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
 

  1. Apply the parking brake.
  2.  
  3. Disconnect the Evaporative (EVAP) emission canister purge valve connector.
  4.  
  5. Connect the HDS to the Data Link Connector (DLC) located under the driver's side of the dashboard.

    Click image to see an enlarged view

    Fig. Connect the scan tool to the DLC (A) which is found under the driver-s side of the dashboard

  6.  
  7. 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.
  8.  
  9. Check the idle speed without load conditions: headlights, blower fan, radiator fan, and air conditioner off. The idle speed should be 680-780 rpm (in Park or Neutral).
  10.  
  11. 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). The idle speed should be 680-780 rpm (in Park or Neutral).
    NOTE
    The idle learn procedure must be done so the PCM can learn the engine idle characteristics. Do the idle learn procedure whenever you do any of these actions:



    Replace PCM.
     
    Reset PCM.
     
    Update PCM.
     
    Erasing DTCs with the HDS does not require you to do the idle learn procedure.
     
    Replace or clean the throttle body.
     

  12.  
  13. If the idle speed is not within specification, do the PCM idle learn procedure, as follows:
    1. Make sure all electrical items (A/C, audio, lights, etc.) are off.
    2.  
    3. Reset the PCM with the HDS.
    4.  
    5. Turn the ignition switch ON (II), and wait 2 seconds.
    6.  
    7. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan comes on, or until the engine coolant temperature reaches 194 ºF (90 ºC).
    8.  
    9. Let the engine idle for about 5 minutes with the throttle fully closed.
      NOTE
      If the radiator fan comes on, do not include its running time in the 5 minutes.

    10.  

  14.  
  15. Reconnect the EVAP canister purge valve connector.
  16.  

 
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