Master Switch One Touch (Using An Ammeter)

Disconnect the connector from the master switch.
Connect the positive (+) lead from ammeter to terminal No. 6 on the wire harness side, and connect negative (-) lead to negative terminal of the battery. See Fig 1.
Connect the positive (+) lead from the battery to terminal No. 13 on the wire harness side.

NOTE: The circuit breaker opens some 4-40 seconds after the window stops going down. Check must be made before the circuit breaker operates.

As the window goes down, check that the current flows approximately 7 amperes.
Check that the current increases approximately 14.5 amperes or more when the window stops going down. If operation is as specified, replace the master switch.

Fig 1: Testing Master Switch (Using An Ammeter)