Honda Civic manuals

Honda Civic Service Manual: Idle Speed Inspection (R18A9)

Inspection

1. HDS DLC - Connection


1.

Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.


2.

Turn the ignition switch to ON (II).


3.

Make sure the HDS communicates with the vehicle. If it does not communicate, go to the DLC circuit troubleshooting.


2. Warm Up The Engine

Start the engine. Hold the engine speed at 3,000 rpm without load (A/T in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.


3. Idle Speed - Inspection (Natural Gas Model)

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.


1.

Check the idle speed without load conditions: headlights, blower fan, radiator fan, and air conditioner off.


Idle speed should be: 670±50 rpm (in P or N)


2.

Let the engine idle for 1 minute with high electric load (A/C on, temperature set to max cool, blower fan on high, headlights on high beam).


Idle speed should be: 710±50 rpm (in P or N)


NOTE: If the idle speed is not within specification, do the PCM idle learn procedure. If the idle speed is still not within specification, go to the symptom troubleshooting.


Idle Speed Inspection (K24Z7)
1215M6 Inspection 1. HDS DLC - Connection 1. Connect the HDS to the data link connector (DLC) (A) located ...

Idle Speed Inspection (R18Z1)
1215M6 Inspection 1. HDS DLC - Connection 1. Connect the HDS to the data link connector (DLC) (A) located ...

See also:

Honda Civic Service Manual. Transmission Fluid Pressure Switch A (2nd Clutch) Removal and Installation (A/T)
2221A4 REAR 1. Vehicle Lift 1. Raise the vehicle on a lift, and make sure it is securely supported. 2. Transmission Fluid Pressure Switch A (2nd Clutch) ...

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