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.
Brake Switch Signal
1996 Isuzu Oasis SSECTION Brake Switch Signal
NOTE:
This signal informs the PCM when the brake pedal is depressed.
- If brakelights are on without depressing brake pedal, check brakelight switch and repair or replace as necessary. If brakelights are not on, depress brake pedal. If brakelights come on, go to next step. If brakelights do not come on, check power feed circuit (including fuse) between brakelight switch and fuse box. See WIRING DIAGRAMS section. Repair as necessary.
- Measure voltage between PCM connector terminals A9 and D5. See Figure . If battery voltage exists, brake switch signal is okay. If battery voltage does not exist, repair open in wire between PCM connector terminal D5 and brakelight switch harness connector. See WIRING DIAGRAMS section.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.