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.
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HOMESERVICE MANUALSHONDA2000ACCORD EX SEDAN L4-2254CC 2.3L SOHC (VTEC) MFIREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESHOW TO USE THE HONDA PGM TESTER OR A SCAN TOOL
2000 Honda Accord EX Sedan L4-2254cc 2.3L SOHC (VTEC) MFI
How to Use the Honda PGM Tester or A Scan Tool
2000 Honda Accord EX Sedan L4-2254cc 2.3L SOHC (VTEC) MFISECTION How to Use the Honda PGM Tester or A Scan Tool
HOW TO USE THE PGM TESTER OR A SCAN TOOL
If The MIL (Malfunction Indicator Lamp) Has Come On
1. Start the engine and check the MIL.
2. If the MIL stays on, connect the Honda PGM Tester (A) or an OBD II scan tool to the Data Link Connector (DLC) (B) located under the driver's side of the dashboard.
3. Turn the ignition switch ON (II).
4. Check the Diagnostic Trouble Code (DTC) and note it. Then also check the freeze data. Refer to the DTC Troubleshooting Index and begin the appropriate troubleshooting procedure.
NOTE:
- Freeze data indicates the engine conditions when the first malfunction, misfire, or fuel trim malfunction was detected.
- The scan tool and the Honda PGM tester can read the DTC, freeze data, current data, and other Engine Control Module (ECM) / Powertrain Control Module (PCM) data.
- For specific operations, refer to the user's manual that came with the scan tool or PGM Tester.
If The MIL Did Not Come On
If the MIL did not come on but there is a driveablity problem, refer to the Symptom Troubleshooting index.
If You Can't Duplicate The DTC
Some of the troubleshooting requires you to reset the ECM/PCM and try to duplicate the DTC. If the problem is intermittent and you can't duplicate the code, do not continue through the procedure. To do so will only result in confusion and, possibly, a needlessly replaced ECM/PCM.
How To Reset The ECM/PCM
You can reset the ECM/PCM in either of two ways:
- Use the OBD II scan tool or Honda PGM Tester to clear the ECM/PCM memory.
See the OBD II scan tool or Honda PGM Tester user's manuals for specific instructions.
- Turn the ignition switch OFF, and remove the No.13 CLOCK BACKUP fuse (7.5 A) (A) from the passenger's under-dash fuse/relay box (B) for 10 seconds.
NOTE: If the No.13 CLOCK BACK UP (7.5 A) fuse is removed and engine is started, the MIL will come on and the PCM will store DTC P0560 (F23A4 engine).
How To End A Troubleshooting Session
(required after any troubleshooting)
1. Reset the ECM/PCM as described above.
2. Turn the ignition switch OFF.
3. Disconnect the OBD II scan tool or Honda PGM Tester from the DLC.
NOTE: The ECM/PCM is part of the immobilizer system. If you replace the ECM/PCM, it will have a different immobilizer code. In order for the engine to start, you must rewrite the immobilizer code with the Honda PGM Tester.
If The MIL (Malfunction Indicator Lamp) Has Come On
1. Start the engine and check the MIL.
2. If the MIL stays on, connect the Honda PGM Tester (A) or an OBD II scan tool to the Data Link Connector (DLC) (B) located under the driver's side of the dashboard.
3. Turn the ignition switch ON (II).
4. Check the Diagnostic Trouble Code (DTC) and note it. Then also check the freeze data. Refer to the DTC Troubleshooting Index and begin the appropriate troubleshooting procedure.
NOTE:
- Freeze data indicates the engine conditions when the first malfunction, misfire, or fuel trim malfunction was detected.
- The scan tool and the Honda PGM tester can read the DTC, freeze data, current data, and other Engine Control Module (ECM) / Powertrain Control Module (PCM) data.
- For specific operations, refer to the user's manual that came with the scan tool or PGM Tester.
If The MIL Did Not Come On
If the MIL did not come on but there is a driveablity problem, refer to the Symptom Troubleshooting index.
If You Can't Duplicate The DTC
Some of the troubleshooting requires you to reset the ECM/PCM and try to duplicate the DTC. If the problem is intermittent and you can't duplicate the code, do not continue through the procedure. To do so will only result in confusion and, possibly, a needlessly replaced ECM/PCM.
How To Reset The ECM/PCM
You can reset the ECM/PCM in either of two ways:
- Use the OBD II scan tool or Honda PGM Tester to clear the ECM/PCM memory.
See the OBD II scan tool or Honda PGM Tester user's manuals for specific instructions.
- Turn the ignition switch OFF, and remove the No.13 CLOCK BACKUP fuse (7.5 A) (A) from the passenger's under-dash fuse/relay box (B) for 10 seconds.
NOTE: If the No.13 CLOCK BACK UP (7.5 A) fuse is removed and engine is started, the MIL will come on and the PCM will store DTC P0560 (F23A4 engine).
How To End A Troubleshooting Session
(required after any troubleshooting)
1. Reset the ECM/PCM as described above.
2. Turn the ignition switch OFF.
3. Disconnect the OBD II scan tool or Honda PGM Tester from the DLC.
NOTE: The ECM/PCM is part of the immobilizer system. If you replace the ECM/PCM, it will have a different immobilizer code. In order for the engine to start, you must rewrite the immobilizer code with the Honda PGM Tester.
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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.