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 B2300 AutomaticFACTORY OEM SERVICE PROCEDURE
Power Window Relay
- Remove power window relay. Measure resistance between terminal No. 85 and all other terminals of relay. See Fig 2. If all resistance readings are greater than 5 ohms, go to next step. If any resistance reading is 5 ohms or less, replace power window relay.
- Using two fused jumper wires, connect positive battery voltage to relay terminals No. 86 and No. 30. Measure voltage at terminal No. 87a. If battery voltage exists, go to next step. If battery voltage does not exist, replace power window relay.
- With both jumper wires connected as in step 2) , connect another jumper wire between ground and relay terminal No. 85. Measure voltage at terminal No. 87. If battery voltage does not exist, replace power window relay. If battery voltage exists, power window relay is okay at this time.
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.