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.
1993 Acura Integra GS-RFACTORY OEM SERVICE PROCEDURE
Charging System Light Operation Test
- Turn ignition on. Charging system light should come on. If charging system light comes on, go to next step. If charging system light does not come on, go to step 6).
- Start engine. Charging system light should turn off. If charging system light stays on, go to next step. If charging system light turns off, charging system light circuit is functioning properly.
- Turn ignition off. Disconnect alternator 4-pin harness connector. Turn ignition on. If charging system light is on, turn ignition off and go to next step. If charging system light is off, go to ALTERNATOR/REGULATOR OUTPUT TEST .
- Disconnect ABS control module 18-pin connector. Disconnect integrated control module from under-dash fuse box.
- Turn ignition on. If charging system light is on, repair short to ground in White/Blue wire. See Figure. After making repairs, reconnect control module connectors and reset ECM to clear and codes.
- Turn ignition off. Check fuse No. 24. If fuse is good, go to next step. If fuse is blown, replace fuse.
- Disconnect alternator 4-pin harness connector. Turn ignition on. Measure voltage between ground and alternator 4-pin harness connector terminal "IG" (Black/Yellow wire). See Fig 1. Battery voltage should be present. If battery voltage is present, go to next step. If battery voltage is not present, repair open in Black/Yellow wire.
- Connect a fused jumper wire between ground and alternator 4-pin harness connector terminal "L" (White/Blue wire). See Fig 1. Charging system light should turn on. If charging system light turns on, replace voltage regulator.
- If charging system light does not turn on, check for blown charging system light bulb and replace as necessary. If bulb is good, repair open in White/Blue wire.
Factory Service Tools
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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.