Test D: A Single Power Window Is Inoperative - LH Front
PINPOINT TEST D: A SINGLE POWER WINDOW IS INOPERATIVE - LH FRONTNOTE:
- A new LH front power window motor will not operate in one-touch up or one-touch down mode until initialized. Refer to Window Motor Initialization. Testing and Inspection
- The LH front power window motor must be initialized whenever a new motor is installed.
- The front window motor must be de-initialized, then initialized whenever the LH or RH (MKX) or LH (Edge) front window motor is removed from the window regulator drum housing, a new window regulator is installed, a new window glass is installed, a new top run is installed or for any operation in which grease or lubricants are applied to the window regulator or glass run.
Normal Operation
The LH front power window control switch receives power from the delay accessory relay through circuit CBP41 (BU). The LH window motor receives battery power through circuit SBP04 (GN/RD) and ground through circuit GD133 (BK). When the LH front window control switch is operated in the UP position, the LH front window motor receives a voltage signal through circuit CPW11 (BU/GY). When the LH front window control switch is operated in the DOWN position, the LH front window motor receives a voltage signal through circuit CPW10 (YE/VT). When the LH front window motor receives a ground signal on circuit CPW29 (VT/GY), the LH front window motor will enter one-touch up/down mode.
This pinpoint test is intended to diagnose the following:
- Fuse(s)
- Wiring, terminals or connectors
- LH front window motor
- LH front window control switch
- LH front window motor not initialized