Sienna FWD V6-3.3L (3MZ-FE) (2006)
b. Reconnect the ECU connectors, and check the voltage of each terminal of the connectors.
*1 Satellite switch (Back door)
*2 Transmitter switch (Back door)
*3 When all the conditions listed below are met, the warning buzzer sounds.
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Ignition switch is turned ON
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Shift lever is moved into any position except P position
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Back door is open or power back door system is activated to open
*4 When any condition listed below is met, the warning buzzer turns off.
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Shift lever is moved into P position
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Back door is fully closed.
HINT: Use an oscilloscope to check the output voltages of the power back door main switch, buzzer and pulse sensor.
If the result is not as specified, the ECU may have a malfunction.