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 MANUALSACURA19983.5RL SPECIAL EDITIONREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALCHARGING SYSTEMSGENERATORS & REGULATORSBENCH TESTINGRECTIFIER DIODES
1998 Acura 3.5RL Special Edition
Rectifier Diodes
1998 Acura 3.5RL Special EditionSECTION Rectifier Diodes
NOTE:
The diodes are designed to allow current to pass in one direction while blocking it in the opposite direction. Since the alternator rectifier is made up of 8 diodes (4 pairs), each diode must be tested for continuity in both directions with an ohmmeter that has diode checking capability; a total of 16 checks.
- Check for continuity in each direction, between the B and P, and between the E (ground), and P terminals of each diode pair. All diodes should have continuity in only one direction. See Fig 1.
- If any of the 8 diodes fails, replace the rectifier assembly. (Diodes are not available separately)
RENDER: 1.0x
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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.