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.
2002 Mazda B4000 Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Four... Wheel Drive Control Module Connector End View (C281a)
| Pin | Circuit | Circuit function |
|---|---|---|
| 1 | 931 (OG) | Voltage supplied at all times (overload protected) |
| 2 | 704 (DG/LG) | Voltage supplied at all times (overload protected) |
| 3 | ... | not used |
| 4 | 70 (LB/WH) | ISO Bus |
| 5 | 465 (WH/LB) | Four... wheel drive control module to Gearmotor encoder assembly (motor +/...) |
| 6 | ... | not used |
| 7 | 57 (BK) | Ground |
| 8 | 778 (OG) | Four... wheel drive control module, to Gearmotor encoder assembly (motor +/...) |
| 9 | 1003 (GY/YE) | Voltage is Run (overload protected) |
| 10 | ... | not used |
| 11 | 771 (VT/YE) | Motor position 5 |
| 12 | 810 (RD/LG) | Brake pedal position switch (13480), input |
| 13 | ... | not used |
| 14 | ... | not used |
| 15 | 770 (WH) | Motor position 4 |
| 16 | 463 (RD/WH) | Neutral, switch sense, input |
| 17 | 777 (YE) | Four... wheel drive control module, to Greamotor encoder assembly (motor +/...) |
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.