LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 1992 >> ES 300 Automatic >> Repair and Diagnosis >> Body & Frame >> Power Windows >> Testing >> One Touch Power Window System/Current Of Circuit >> Using An Ammeter With A Current-Measuring Probe
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Using An Ammeter With A Current-Measuring Probe

  1. Remove the master switch with connector connected.
  2. Attach a current measuring probe to terminal 8 of the wire harness. See Fig 1.
  3. Turn the ignition switch ON and set the power window switch in the down position.
  4. As the window goes down, check that the current flow is approximately 7 A. See Fig 2.
  5. NOTE: The circuit breaker opens some 4-40 seconds after the window stops going down, so that a check must be made before the circuit breaker operates.
  6. Check that the current increases up to approximately 14.5 A or more when the window stops going down. If operation is not as specified, replace the master switch
Fig 1: Testing Using An Ammeter With A Current Measuring Probe (1 Of 2)
G00148038Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Testing Using An Ammeter With A Current Measuring Probe (2 Of 2)
G00148039Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002