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.
2005 Toyota Avalon XLSFACTORY OEM SERVICE PROCEDURE
Inspection Procedure
- INSPECT MULTIPLEX NETWORK SWITCH ASSY
- Remove the switch.
- Measure the resistance of the switch when the switch is operated.
Standard:
SPECIFIED CONDITIONSwitch Condition Tester Connection Specified Condition AUTO UP 1 (D) - 7 (E) 6 (U) - 12 (BW) Below 1 Ω UP 1 (D) - 7 (E) 6 (U) - 12 (BW) Below 1 Ω OFF 1 (D) - 7 (E) 6 (U) - 7 (E) Below 1 Ω DOWN 6 (U) - 7 (E) 1 (D) - 12 (BW) Below 1 Ω AUTO DOWN 6 (U) - 7 (E) 1 (D) - 12 (BW) Below 1 Ω
- NG: REPLACE MULTIPLEX NETWORK SWITCH ASSY
- OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
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.