Honda Civic manuals

Honda Civic Service Manual: Throttle Body Carbon Accumulation Check (Except K24Z7)

Check

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. THROTTLE BODY CARBON ACCUMULATION - CHECK

NOTE: If the malfunction indicator lamp (MIL) has been reported on, check for diagnostic trouble codes (DTCs).


1.

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.


2.

Check the REL TP SENSOR in the DATA LIST with the HDS. The reading should be below 2.46 deg. If it is not, clean the throttle body.


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Throttle Body Cleaning (Except K24Z7)
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See also:

Honda Civic Owners Manual. Fuel Economy and CO2 Emissions
Improving Fuel Economy and Reducing CO2 Emissions Achieving fuel economy and reducing CO2 emissions is dependent on several factors, including driving conditions, load weight, idling time, driving habits, and vehicle condition. Depending on these and other factors, you may not achieve the rate ...

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