Read first—then drive safelySymptom diagnosis
Combination switch system symptoms
Symptom Table
Perform the data monitor of consult to check for any malfunctioning
item.
Check the malfunction combinations.
Identify the malfunctioning part from the agreed combination and repair
or replace the part.
...
P0643 Sensor power supply
Description
ECM supplies a voltage of 5.0 V to some of the sensors systematically divided
into 2 groups, respectively.
Accordingly, when a short circuit develops in a sensor power source, a
malfunction may occur simultaneously
in the sensors belonging to the same group as the shorted-circui ...
Component parts
Component Parts Location
BCM (view under instrument panel
on the left side of the vehicle)
Front power window motor LH (RH
similar) (view with front door finisher
removed)
Rear power window motor LH (RH
similar) (view with rear door finisher
removed)
Main power window and do ...