Honda Civic manuals

Honda Civic Service Manual: ECM/PCM Removal and Installation (Except K24Z7 and R18Z1 (CVT))

Honda Civic Service Manual / Powertrain / Transmission/Transaxle / Automatic / ECM/PCM Removal and Installation (Except K24Z7 and R18Z1 (CVT))

1211K3

1. HDS DLC - Connection


NOTE: For specific operations, refer to the user's manual that came with the Honda Diagnostic System (HDS). Make sure the HDS is loaded with the latest software.


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. ECM/PCM Data Copy

1.

Select the REPLACE ECM/PCM MENU, then select READ DATA and follow the screen prompts.


NOTE:

Doing this step copies (READS) the engine oil life data from the original PCM so you can later download (WRITES) it into the new ECM/PCM.

If READ DATA indicates FAILED, continue with this procedure.


3. SCS Line Short

1.

Turn the ignition switch to LOCK (0).


2.

Jump the SCS line with the HDS.


4. ECM/PCM

1.

Remove the cover (A).



2.

Disconnect ECM/PCM connectors A, B, and C.


NOTE: ECM/PCM connectors A, B, and C have symbols (A=□, B=△, C=○) embossed on them for identification.


3.

Remove the ECM/PCM (D).


1. ECM/PCM


1.

Install the ECM/PCM (D).


2.

Connect ECM/PCM connectors A, B, and C.


NOTE: ECM/PCM connectors A, B, and C have symbols (A=□, B=△, C=○) embossed on them for identification.


3.

Install the cover (A).


2. 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.


3. VIN Registration

1.

Turn the ignition switch to ON (II).


2.

Manually input the VIN to the ECM/PCM with the HDS.


NOTE: DTC P0630 VIN Not Programmed or Mismatch may be stored because the VIN has not been programmed into the ECM/PCM; ignore it, and continue this procedure.


4. ECM/PCM Data Copy

1.

If the READ DATA (engine oil life) failed in removal procedure, go to immobilizer key registration procedure. Otherwise, go to next step.


2.

Select the PGM-FI system with the HDS.


3.

Select the REPLACE ECM/PCM MENU, then select WRITE DATA, and follow the screen prompts.


NOTE: If the WRITE DATA indicates FAILED, continue with this procedure.


5. Immobilizer Key Registration - Programming Control Unit

1.

Select IMMOBI system with the HDS.


2.

Enter the immobilizer code using the ECM/PCM replacement procedure in the IMMOBI MENU of the HDS; it allows you to start the engine.


6. ECM/PCM Read Data and Write Data

1.

If the READ DATA failed in removal procedure or the WRITE DATA failed, replace the engine oil, and the engine oil filter, then go to next step.


7. ECM/PCM Update

1.

Update the ECM/PCM with the HDS if it does not have the latest software.


8. ECM/PCM - Reset

1.

Reset the ECM/PCM with the HDS while the engine is stopped.


2.

Turn the ignition switch to LOCK (0).


3.

Turn the ignition switch to ON (II) and wait 30 seconds.


9. 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.


10. ECM/PCM - Idle Learn

1.

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.


11. CKP Pattern Clear/CKP Pattern Learn

1.

Select CRANK PATTERN in the ADJUSTMENT MENU with the HDS.


2.

Select CRANK PATTERN CLEAR, and clear the CKP pattern.


3.

Select CRANK PATTERN LEARNING with the HDS, and follow the screen prompts.


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