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.
Electronic Brake Control Module: Service and Repair
2004 Honda S2000 L4-2.2LSECTION Service and Repair
ABS Modulator-Control Unit Removal and Installation
NOTE:
^ Do not spill brake fluid on the vehicle; it may damage the paint; if brake fluid gets on the paint, wash it off immediately with water.
^ Take care not to damage or deform the brake lines during removal and installation.
^ To prevent the brake fluid from flowing, plug and cover the hose ends and joints with a shop towel or equivalent material.
'O4 - 'O5 ModeIs: Removal
1. Pull up the lock (A) of the ABS control unit 25P connector (B), then disconnect the connector.
2. Disconnect the six brake lines from the ABS modulator-control unit (C).
3. Remove the three 6 mm, bolts:
4. Remove the ABS modulator-control unit.
'O4 - 'O5 Models: Initallation
1. Install the ABS modulator-control unit, then tighten the three 6 mm bolts.
2. Align the connecting surface of the ABS control unit 25P connector.
3. Push in the lock of the ABS cOntrol unit 25P connector until you hear it click into place, then connect the connector.
4. Bleed the brake system, starting with the front wheels.
5. Start the engine, and check that the ABS indicator goes off.
6. Test-drive the vehicle, and check that the ABS indicator does not come on.
NOTE:
^ Do not spill brake fluid on the vehicle; it may damage the paint; if brake fluid gets on the paint, wash it off immediately with water.
^ Take care not to damage or deform the brake lines during removal and installation.
^ To prevent the brake fluid from flowing, plug and cover the hose ends and joints with a shop towel or equivalent material.
'O4 - 'O5 ModeIs: Removal
1. Pull up the lock (A) of the ABS control unit 25P connector (B), then disconnect the connector.
2. Disconnect the six brake lines from the ABS modulator-control unit (C).
3. Remove the three 6 mm, bolts:
4. Remove the ABS modulator-control unit.
'O4 - 'O5 Models: Initallation
1. Install the ABS modulator-control unit, then tighten the three 6 mm bolts.
2. Align the connecting surface of the ABS control unit 25P connector.
3. Push in the lock of the ABS cOntrol unit 25P connector until you hear it click into place, then connect the connector.
4. Bleed the brake system, starting with the front wheels.
5. Start the engine, and check that the ABS indicator goes off.
6. Test-drive the vehicle, and check that the ABS indicator does not come on.
RENDER: 1.0x
NO RELATED
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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.