Pgm-Fi System (4-CYL): Removal & Installation Honda Accord VIII

A/F Sensor Replacement

Special Tools Required

02 Sensor Wrench Snap-on S6176 or equivalent, commercially available

Scheme 859

1. Disconnect the A/F sensor 4P connector (A), then remove the A/F sensor (B).
2. Install the parts in the reverse order of removal.

Secondary HO2S Replacement

Special Tools Required

02 Sensor Wrench Snap-on S6176 or equivalent, commercially available

Scheme 860

1. Disconnect secondary HO2S 4P connector (A), then remove the secondary HO2S (B).
2. Install the parts in the reverse order of removal.

Scheme 861

Scheme 862

1. Disconnect the connector (A) and hoses (B) from the EVAP canister purge valve (C), then remove the EVAP canister purge valve assembly.
2. Disconnect the CMP sensor B connector (A).
3. Remove CMP sensor B.
4. Install the parts in the reverse order of removal with a new O-ring (C).

Scheme 863

1. Raise the vehicle on a lift. NOTE: Make sure the vehicle is level, because engine oil will drip out when you remove the sensor.
2. Remove the CKP sensor cover (A).
3. Disconnect the CKP sensor connector (B).
4. Remove the CKP sensor (C).
5. Install the parts in the reverse order of removal with a new O-ring (D).
6. Do the CKP pattern clear/CKP pattern learn procedure (see «CKP PATTERN CLEAR/CKP PATTERN LEARN»(ref-424896-S34443197862011100100000) ).
7. Check the engine oil level, and add more oil if needed.

Scheme 864

1. Disconnect the MAP sensor connector (A).
2. Remove the MAP sensor (B).
3. Install the parts in the reverse order of removal with a new O-ring (C).

Scheme 865

1. Disconnect the MAF sensor/IAT sensor connector (A).
2. Remove the screws (B).
3. Remove the MAF sensor/IAT sensor (C).
4. Install the parts in the reverse order of removal with a new O-ring (D).

Scheme 866

1. Drain the engine coolant (see «COOLANT CHECK»(ref-424879-S40133990312011100100000) ).
2. Disconnect the ECT sensor 1 connector (A).
3. Remove ECT sensor 1 (B).
4. Install the parts in the reverse order of removal with a new O-ring (C), then refill the radiator with engine coolant (see «COOLANT CHECK»(ref-424879-S40133990312011100100000) ).

Scheme 867

1. Remove the front splash shield, (see «FRONT SPLASH SHIELD REPLACEMENT»(ref-424921-S05649471502011100100000) )
2. Drain the engine coolant (see «COOLANT CHECK»(ref-424879-S40133990312011100100000) ).
3. Disconnect the ECT sensor 2 connector (A), then remove ECT sensor 2 (B).
4. Install ECT sensor 2 with a new O-ring (C).
5. Install the front splash shield, (see «FRONT SPLASH SHIELD REPLACEMENT»(ref-424921-S05649471502011100100000) )
6. Refill the radiator with engine coolant (see «COOLANT CHECK»(ref-424879-S40133990312011100100000) ).

Output Shaft (Countershaft) Speed Sensor Replacement

Note. For A/T models (see OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR REPLACEMENT ).

Scheme 868

1. Disconnect the output shaft (countershaft) speed sensor 3P connector (A).
2. Remove the output shaft (countershaft) speed sensor (B).
3. Install the parts in the reverse order of removal with a new O-ring (C).

Scheme 869

1. Remove the intake manifold (see «REMOVAL»(ref-424883-S36986009272011100100000) ).
2. Disconnect the knock sensor connector (A).
3. Remove the knock sensor (B).
4. Install the parts in the reverse order of removal.

Scheme 870

Scheme 871

Scheme 872

Scheme 873

1. Do the battery terminal disconnection procedure (see «BATTERY TERMINAL DISCONNECTION AND RECONNECTION»(ref-424893-S02953168502011100100000) ).
2. Remove the upper cover (A), then remove the two positive (+) terminals (B).
3. Remove the under-hood fuse/relay box (C) from the bracket.
4. Remove the lower cover (A). A.
5. Disconnect the ELD 3P connector (B).
6. Remove the fuses (A and B).
7. Release the three lock tabs (A), then remove the ELD (B).
8. Install the parts in the reverse order of removal.
9. Do the battery terminal reconnection procedure (see «BATTERY TERMINAL DISCONNECTION AND RECONNECTION»(ref-424893-S02953168502011100100000) ).

ECM/PCM Replacement

Special Tools Required

1. Honda diagnostic system (HDS) tablet tester
2. Honda Interface Module (HIM) and an iN workstation with the latest HDS software version
3. HDS pocket tester
4. GNA600 and an iN workstation with the latest HDS software version
5. MVCI unit with the latest control module (CM) update software installed

Any one of above updating tools can be used.

Note. Make sure the HDS/iN workstation or the MVCI unit has the latest HDS software version.

Scheme 874

Scheme 875

Scheme 876

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 ECM/PCM and other vehicle systems. If it doesn't, go to the «DLC CIRCUIT TROUBLESHOOTING»(ref-424872-S30001493072011100100000) . If you are returning from the DLC circuit troubleshooting, skip steps 4 through 7 , 17 through 22 , and 25 through 26 , and do this after replacing the ECM/PCM: Replace the engine oil (see «OIL PRESSURE TEST»(ref-424873-S25423904122011100100000) ) and the engine oil filter (see «ENGINE OIL FILTER REPLACEMENT»(ref-424873-S18661419512011100100000) ). Replace the ATF (A/T model) (see «ATF REPLACEMENT»(ref-424882-S42873958482011100100000) ). Clean the throttle body (see «THROTTLE BODY CLEANING»(ref-424885-S32312340552011100100000) ).
4. Select the PGM-FI system with the HDS.
5. Select the REPLACE ECM/PCM MENU, then READ DATA, and follow the screen prompts. NOTE: Doing this step copies (READS) the engine oil life data from the original ECM/PCM so you can later download (WRITES) it into the new ECM/PCM. If READ DATA indicates FAILED, continue with this procedure.
6. A/T models: Select the A/T system with the HDS.
7. A/T models: Select the REPLACE TCM/PCM MENU, then select READ DATA, and follow the screen prompts. NOTE: Doing this step copies (READS) the ATF life data from the original PCM so you can later download (WRITES) it into the new PCM. If READ DATA indicates FAILED, continue with this procedure.
8. Turn the ignition switch to LOCK (0).
9. Do the battery removal procedure (see «BATTERY REMOVAL AND INSTALLATION»(ref-424893-S34655733102011100100000) ).
10. Remove the bolts (D).
11. Disconnect ECM/PCM connectors A, B, and C, then remove the ECM/PCM assembly (E). NOTE: ECM/PCM connectors A, B, and C have symbols (A=[], B= , C=o) embossed on them for identification.
12. Remove the cover (A) and the bracket (B) from the ECM/PCM (C).
13. Install the ECM/PCM in the reverse order of removal.
14. Do the battery installation procedure (see «BATTERY REMOVAL AND INSTALLATION»(ref-424893-S34655733102011100100000) ).
15. Turn the ignition switch to ON (II).
16. 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.
17. If the READ DATA (engine oil life) failed in step 7 , go to step 20 (A/T model) or step 23 (M/T model). Otherwise, go to step 18.
18. Select the PGM-FI system with the HDS.
19. 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.
20. A/T models: If the READ DATA (ATF life) failed in step 7 , go to step 23 . Otherwise go to step 21.
21. A/T models: Select the A/T SYSTEM with the HDS.
22. A/T models: Select the REPLACE TCM/PCM MENU, then select WRITE DATA, and follow the screen prompts. NOTE: If the WRITE DATA indicates FAILED, continue with this procedure.
23. Select IMMOBI system with the HDS.
24. Enter the immobilizer ECM/PCM code that you got from the iN, and use the ECM/PCM replacement procedure in the IMMOBI MENU of the HDS; it allows you to start the engine.
25. If the READ DATA failed in step 5 or the WRITE DATA failed in step 19 , replace the engine oil (see «OIL PRESSURE TEST»(ref-424873-S25423904122011100100000) ) and engine oil filter (see «ENGINE OIL FILTER REPLACEMENT»(ref-424873-S18661419512011100100000) ), then go to step 26 (A/T model) or step 27 (M/T model).
26. A/T models: If the READ DATA failed in step 7 or the WRITE DATA failed in step 22 , replace the ATF (see «ATF REPLACEMENT»(ref-424882-S42873958482011100100000) ), then go to step 27.
27. Select PGM-FI system, and reset the ECM/PCM with the HDS.
28. Clean the throttle body (see «THROTTLE BODY CLEANING»(ref-424885-S32312340552011100100000) ).
29. Update the ECM/PCM if it does not have the latest software (see «ECM/PCM UPDATE»(ref-424872-S33907592622011100100000) ).
30. Do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(ref-424898-S27503289542011100100000) ).
31. Do the CKP pattern clear/CKP pattern learn procedure (see «CKP PATTERN CLEAR/CKP PATTERN LEARN»(ref-424896-S34443197862011100100000) ).