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.
2003 Honda Pilot EXFACTORY OEM SERVICE PROCEDURE
Self-Diagnosis Function
- The ABS control unit is equipped with a main CPU and a sub-CPU. Each CPU checks the other for problems.
- The CPUs check the circuit of the system.
- The ABS control unit turns on the ABS indicator when the unit detects a problem and the unit stops the system.
- The self-diagnosis can be classified into these two categories:
- Initial diagnosis. Done right after engine starts and until ABS indicator goes off
- Regular diagnosis. Done right after initial diagnosis until the ignition switch is turned off.
- When a problem is detected by the self-diagnosis, the system:
- Turns the fail safe relay off.
- Turns the solenoid valve off.
- Turns pump motor off.
- Turns ABS indicator on.
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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