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.
1999 Acura Integra GS-R, 4D SedanFACTORY OEM SERVICE PROCEDURE
Brake Switch Signal
- Check brakelight operation. If brakelights operate properly, go to step 3. If brakelights stay on continuously, check for continuity between brakelight switch terminals "B" and "C". See Fig 1 or Fig 2 . Repair or replace switch as necessary. If brakelights do not come on when brake pedal is depressed, check STOP LIGHT, HORN fuse located in underhood fuse/relay box. See FUSE IDENTIFICATION table. See WIRING DIAGRAMS article.
- If fuse is okay, repair open in wire between fuse and brakelight switch. If wire is okay, check brakelight switch. If fuse in not okay, repair short in wire between fuse and brakelight switch. Replace STOP LIGHT, HORN fuse.
- Depress brake pedal and backprobing, measure voltage between specified PCM terminals. See BRAKE SIGNAL TESTING table. See Figure or Figure. See WIRING DIAGRAMS article. If battery voltage exists, brake signal is okay. If battery voltage does not exist, repair open in Green/White or White/Green wire between PCM connector and brake switch.
FUSE IDENTIFICATION
| Application | Fuse No. (Amps) |
|---|---|
| Integra | 52 (20) |
| 2.3CL & 3.0CL | 30 (20) |
| 3.2TL | 2 (20) |
| 3.5RL | 39 (15) |
BRAKE SIGNAL TESTING
| Application | Measure Between PCM Connector Terminals (Wire Colors) |
|---|---|
| Integra | A9 (BRN/BLK) & D5 (WHT/GRN) |
| 2.3CL & 3.0CL | A32 (GRN/WHT) & B20 (BRN/BLK) |
| 3.2TL | A32 (WHT/BLK) & B20 (BRN/BLK) |
| 3.5RL | A26 (BRN/BLK) & E2 (GRN/WHT) |
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.
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