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, 4D SEDAN, 2.3 CG5, STANDARDREPAIR AND DIAGNOSISGENERAL INFORMATIONCOMPUTER RELEARN PROCEDURESMAZDAIMMOBILIZER SYSTEM (626)IMMOBILIZER UNIT & PCM
2000 Honda Accord EX, 4D Sedan, 2.3 CG5, Standard
Immobilizer Unit & PCM
2000 Honda Accord EX, 4D Sedan, 2.3 CG5, StandardSECTION Immobilizer Unit & PCM
NOTE:
Keys may be new or valid. If errors occur during reprogramming in steps 1) or 2), start over from step 1). If errors occur during step 3), go to REPROGRAM ERROR RECOVERY .
- Cut new transponder equipped key(s), if necessary. Replace immobilizer unit and PCM. Using 1st key, turn ignition to ON position. SECURITY light should illuminate and then go out. Turn 1st key to LOCK position and remove key. SECURITY light should flash in single pulses repeatedly.
- Using 2nd key, turn ignition to ON position. SECURITY light should illuminate and then go out. Turn 2nd key to LOCK position and remove key. SECURITY light should flash in double pulses repeatedly.
- Using 3rd key, turn ignition to ON position. SECURITY light should illuminate and then go out. Turn 3rd key to LOCK position and remove key. SECURITY light should flash in triple pulses repeatedly.
- Repeat step 3) with each new key, up to 8 keys total. Wait 30 seconds, program will quit automatically. After reprogramming is complete, clear DTCs with NGS 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.