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.
Power Window Master Switch: Inspection
- INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY
- Measure the resistance of the switch when the switch is operated.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Standard resistance:
Driver switch
TERMINALS RESISTANCE SPECIFICATION (DRIVER SWITCH)Tester Connection Window Lock Switch Condition Power Window Switch Condition Specified Condition 1 (E) - 9 (DD) Always (ON / OFF) UP Below 1 Ω 4 (DU) - 7 (BW) 1 (E) - 9 (DD) Always (ON / OFF) AUTO UP Below 1 Ω 4 (DU) - 7 (BW) 1 (E) - 4 (DU) Always (ON / OFF) OFF Below 1 Ω 1 (E) - 9 (DD) 1 (E) - 4 (DU) Always (ON / OFF) DOWN Below 1 Ω 7 (BW) - 9 (DD) 1 (E) - 4 (DU) Always (ON / OFF) AUTO DOWN Below 1 Ω 7 (BW) - 9 (DD) Passenger switch
TERMINALS RESISTANCE SPECIFICATION (PASSENGER SWITCH)Tester Connection Window Lock Switch Condition Power Window Switch Condition Specified Condition 1 (E) - 15 (PD) OFF UP Below 1 Ω 6 (B) - 13 (PU) 1 (E) - 13 (PU) OFF OFF Below 1 Ω 1 (E) - 15 (PD) 1 (E) - 13 (PU) OFF DOWN Below 1 Ω 6 (B) - 15 (PD) 1 (E) - 15 (PD) ON UP 10 kΩ or higher 6 (B) - 13 (PU) Below 1 Ω 13 (PU) - 15 (PD) ON OFF Below 1 Ω 1 (E) - 13 (PU) ON DOWN 10 kΩ or higher 6 (B) - 15 (PD) Below 1 Ω Rear LH switch
TERMINALS RESISTANCE SPECIFICATION (REAR LH SWITCH)Tester Connection Window Lock Switch Condition Power Window Switch Condition Specified Condition 1 (E) - 10 (RLD) OFF UP Below 1 Ω 6 (B) - 12 (RLU) 1 (E) - 12 (RLU) OFF OFF Below 1 Ω 1 (E) - 10 (RLD) 1 (E) - 12 (RLU) OFF DOWN Below 1 Ω 6 (B) - 10 (RLD) 1 (E) - 10 (RLD) ON UP 10 kΩ or higher 6 (B) - 12 (RLU) Below 1 Ω 12 (RLU) - 10 (RLD) ON OFF Below 1 Ω 1 (E) - 12 (RLU) ON DOWN 10 kΩ or higher 6 (B) - 10 (RLD) Below 1 Ω Rear RH switch
TERMINALS RESISTANCE SPECIFICATION (REAR RH SWITCH)Tester Connection Window Lock Switch Condition Power Window Switch Condition Specified Condition 1 (E) - 16 (RRD) OFF UP Below 1 Ω 6 (B) - 18 (RRU) 1 (E) - 18 (RRU) OFF OFF Below 1 Ω 1 (E) - 16 (RRD) 1 (E) - 18 (RRU) OFF DOWN Below 1 Ω 6 (B) - 16 (RRD) 1 (E) - 16 (RRD) ON UP 10 kΩ or higher 6 (B) - 18 (RRU) Below 1 Ω 18 (RRU) - 16 (RRD) ON OFF Below 1 Ω 1 (E) - 18 (RRU) ON DOWN 10 kΩ or higher 6 (B) - 16 (RRD) Below 1 Ω If the result is not as specified, replace the master switch assembly.
- Apply battery voltage to the master switch and check that the AUTO light illuminates.
OK
MEASUREMENT CONDITION AND SPECIFIED CONDITIONMeasurement Condition Specified Condition Battery positive (+) --> Terminal 11 (BDR)
Battery negative (-) --> Terminal 1(E)AUTO light illuminates If the result is not as specified, replace the master switch assembly.
- Measure the resistance of the switch when the switch is operated.
Use the Manual With the Right Hardware
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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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