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.
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HOMESERVICE MANUALSMAZDA2004B4000 4WD V6-4.0L SOHCREPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLANTILOCK BRAKES / TRACTION CONTROL SYSTEMSELECTRONIC BRAKE CONTROL MODULESERVICE AND REPAIR
2004 Mazda B4000 4WD V6-4.0L SOHC
Electronic Brake Control Module: Service and Repair
2004 Mazda B4000 4WD V6-4.0L SOHCSECTION Service and Repair
ABS CONTROL MODULE REMOVAL / INSTALLATION
1. Remove the hydraulic control unit.
Note:
^ The ABS module cannot be repaired, install a new ABS module
2. Remove the bolts
Caution:
^ When the ABS module separated from the HCU, the motor terminals and the valve stems will be exposed. Protect the terminals and the valve stems from damage.
3. Remove the ABS module from the HCU
Caution:
^ A new seal kit must be used when in stalling the ABS module. The old seals must be discarded as they may cause a leak between the ABS module and the HCU.
Note:
^ The O-ring seals must be installed to the valve flange. Make sure there is no twist to the O-ring seal when installed.
4. Discard the O-ring seals and install new ones (one seal per each valve stem).
Note:
^ Clean the groove of the ABS module before installing a new seal.
5. Discard the ABS module sealing material and install a new seal.
Caution: All components must be free of dust, oil, fluid and foreign matter.
6. To install, reverse the removal procedure.
1. Remove the hydraulic control unit.
Note:
^ The ABS module cannot be repaired, install a new ABS module
2. Remove the bolts
Caution:
^ When the ABS module separated from the HCU, the motor terminals and the valve stems will be exposed. Protect the terminals and the valve stems from damage.
3. Remove the ABS module from the HCU
Caution:
^ A new seal kit must be used when in stalling the ABS module. The old seals must be discarded as they may cause a leak between the ABS module and the HCU.
Note:
^ The O-ring seals must be installed to the valve flange. Make sure there is no twist to the O-ring seal when installed.
4. Discard the O-ring seals and install new ones (one seal per each valve stem).
Note:
^ Clean the groove of the ABS module before installing a new seal.
5. Discard the ABS module sealing material and install a new seal.
Caution: All components must be free of dust, oil, fluid and foreign matter.
6. To install, reverse the removal procedure.
RENDER: 1.0x
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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.