Windows

Two techs are discussing an HDS Data list. Tech A says that if a component is shown commanded on, the ECU has indeed turned on that component. Tech B says that just because the data list indicates a component is commanded on does not mean the component is actually functioning. Who is correct?

Tech B

Power window systems use ________ motors?

Reversible

A typical 6 way power seat (no seat back tilt) uses ________.

typically 3 motors (depending on manufacturer)

Technician A says that many power windows and power door locks use a permanent-magnet motor with a built-in circuit breaker and is reversible. Technician B says that many systems use switches with integral motor protection. Which technician is correct?

Tech A

When checking the operation of a rear-window defogger with a voltmeter ________.

The voltmeter should indicate decreasing voltage when grid is tested accorss width of glass.

Technician A says that a defective ground connection at the master control switch (driver's side) could cause the failure of all power windows. Technician B says that if one control wire is disconnected, all windows will fail to operate. Which technician is correct?

Tech A

Only the Driver's power window operates. Technician A says that the window main switch may be open. Technician B says that the power window relay could be defective. Which technician is correct?

Both

Two techs are discussing the above window motor pulser waveform. Tech A says something is wrong because one trace lags behind the other. Tech B says this is normal. Who is correct?

Tech B 

Two techs are discussing the above window motor pulser traces. The window is partly open and stationary. Tech A says both pulsers should show zero volts with a stationary window. Tech B says the pulser is capable of reading a voltage even with a stationary window and depending on the window position, one may read zero while the other reads 4.5 volts. Who is correct?

B

Two techs are discussing power seat and window digital position sensors. Tech A says that a typical DVOM reading with the seat/window moving is around 2.5v. Tech B says a typical DVOM reading with a stationary seat/window can be any value between 0 and 5 volts depending on position. Who is correct?

Both

A Pilot comes in the shop with the front passenger window auto up/down function inoperative. Tech A says that the window motor pulsers may be malfunctioning. Tech B says that the power window reset procedure may be required and that an HDS is required. Who is correct?

Tech A