Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSHONDA2005ACCORD L4-2.4LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULESERVICE AND REPAIRREMOVAL AND REPLACEMENT
2005 Honda Accord L4-2.4L
Removal and Replacement
2005 Honda Accord L4-2.4LSECTION Removal and Replacement
How to Remove the ECM/PCM for Testing
If DTC troubleshooting requires voltage or resistance checks at the ECM/PCM connectors, remove the ECM/PCM and test it:
1. Jump the SCS line with the HDS.
2. Remove the center lower covers (A).
3. Remove the duct (B).
4. Disconnect the ECM/PCM connectors (C).
5. Remove the bolts (D), then remove the ECM/PCM (E).
6. Install the ECM/PCM in the reverse order of removal.
7. Exit the SCS mode with the HDS.
8. Turn the ignition switch ON (II).
NOTE: If DTC P0630 "VIN Not Programmed or Mismatch" is stored at this time, ignore it and continue this procedure.
9. Input the VIN to the ECM/PCM with the HDS.
10. Rewrite the immobilizer code with the ECM/PCM replacement procedure in the HDS; it allows you to start the engine.
11. Reset the ECM/PCM with the HDS.
12. Do the idle learn procedure.
If DTC troubleshooting requires voltage or resistance checks at the ECM/PCM connectors, remove the ECM/PCM and test it:
1. Jump the SCS line with the HDS.
2. Remove the center lower covers (A).
3. Remove the duct (B).
4. Disconnect the ECM/PCM connectors (C).
5. Remove the bolts (D), then remove the ECM/PCM (E).
6. Install the ECM/PCM in the reverse order of removal.
7. Exit the SCS mode with the HDS.
8. Turn the ignition switch ON (II).
NOTE: If DTC P0630 "VIN Not Programmed or Mismatch" is stored at this time, ignore it and continue this procedure.
9. Input the VIN to the ECM/PCM with the HDS.
10. Rewrite the immobilizer code with the ECM/PCM replacement procedure in the HDS; it allows you to start the engine.
11. Reset the ECM/PCM with the HDS.
12. Do the idle learn procedure.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.