Step 2 - Inspect One-Touch Power Window System Circuit Current (Using An Ammeter)

WARNING: This page is about a different car, the 2002 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the connector from the master switch.
Connect the positive (+) lead from the ammeter to terminal 3 on the wire harness side connector and the negative (-) lead to negative (-) terminal of the battery.

Fig 1: Testing One Touch Power Window Circuits (1 Of 2)
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Connect the positive (+) lead from the battery to terminal 4 on the wire harness side connector.
As the window goes down, check that the current flow is approximately 7 A.

NOTE: The circuit breaker opens some 4 to 40 seconds after the window stops going down, so that check must be done before the circuit brake operates.

Fig 2: Testing 2-Door Model One Touch Power Window Circuits (2 Of 2)

Check that the current increases up to approximately 14.5 A or more when the window stops going down.

If the operation is not as specified, replace the switch.