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

Fig 1: Identifying Data Link Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Make sure the HDS communicates with the PCM If it doesn't, go to the DLC circuit troubleshooting (see DLC CIRCUIT TROUBLESHOOTING )
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

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

Idle speed should be:

IDLE SPEED CHART

J35Z6 engine	680 ± 50 rpm in (P or N)
J37A4 (M/T)	750 ± 50 rpm (in neutral)
J37A4 engine	700 ± 50 rpm in (P or N)

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

Idle speed should be.

IDLE SPEED CHART

J35Z6 engine	680 ± 50 rpm in (P or N)
J37A4 (M/T)	750 ± 50 rpm (in neutral)
J37A4 engine	700 ± 50 rpm in (P or N)

NOTE: If the idle speed is not within specification, do the PCM idle learn procedure (see 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