The DRB scan tool can provide confirmation that the PCI data bus is functional, that all of the electronic modules are sending and receiving the proper messages on the PCI data bus, and that the power window motors are being sent the proper hard wired outputs by the door modules for them to perform their power window system functions.įor complete circuit diagrams, refer to the appropriate wiring information.
The most reliable, efficient, and accurate means to diagnose the power window system requires the use of a DRB scan tool and the proper Diagnostic Procedures manual. In order to obtain conclusive testing of the power window system, the Programmable Communications Interface (PCI) data bus network and all of the electronic modules that provide inputs to, or receive outputs from the power window system components must be checked. However, these tests may not prove conclusive in the diagnosis of this system. This is related to all conditions.įollowing are tests that will help to diagnose the hard wired components and circuits of the power window system. I hate to say it, but the tests related to power windows is extensive.
