CHECK FOR INTERMITTENT PROBLEMS HINT: Inspect the vehicle's ECM using check mode. Intermittent problems are easier to detect with the Techstream when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2 trip detection logic.
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Toyota Tundra Service Manual > Power Window Control System(w/ Jam Protection Function): Operation Check
OPERATION CHECK 1. CHECK WINDOW LOCK SWITCH (a) Check that the front passenger side power window and rear power windows cannot be operated when the window lock switch of the master switch is pressed. OK: Operation of front passenger side power window and rear power windows is disabled. (b) Check tha ...
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