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.
Circuit 1638B (Sedan & Wagon Only)
This circuit supplies voltage to right rear window switch. CKT 1638B is a Pink 14 gage wire. CKT 1638B connects the lockout switch connector cavity "B" to the right rear window switch cavity "D". Check for Opens/Shorts. Repair as needed. If this circuit is good, return to the possible cause list that sent you here and then check the next item.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.