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.
1989 Ford Bronco II 4WD, Standard, M5OD-R1FACTORY OEM SERVICE PROCEDURE
Multiple Switch
- Remove switch from vehicle. Using an DVOM or self-powered test light, clip a test probe to pin No. 6, which is grounded. See Fig 1 . Place both switches in the released (neutral) position. Pin Nos. 1 through 4 should indicate continuity to pin No. 6.
- Push both switches upward. Pins No. 1 and No. 3 should lose continuity to pin No. 6. Push switches downward. Pins No. 2 and No. 4 should lose continuity to pin No. 6.
- Remove test probe from pin No. 6, and connect it to pin No. 5 (battery feed). With both switches in released (neutral) position, pin No. 5 should have continuity only with itself.
- Push both switches upward. Pins No. 1 and 3 should have continuity to pin No. 5.
- Push switches downward. Pins No. 2 and No. 4 should show continuity to pin No. 5. If any switch does not test as indicated, replace complete switch assembly.
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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