Power Seat Switch Test

Following are tests that will help to diagnose the hard wired components and circuits of the power seat system. However, if the vehicle is also equipped with the optional memory system, these tests may not prove conclusive in the diagnosis of the driver side power seat. In order to obtain conclusive testing of the driver side power seat with the memory system option, the Programmable Communications Interface (PCI) data bus network and all of the electronic modules that provide inputs to, or receive outputs from the memory system components must be checked.

The most reliable, efficient, and accurate means to diagnose the driver side power seat with the memory system option requires the use of a DRB scan tool and the proper Diagnostic Procedures. 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 memory system is receiving the proper hard wired inputs and relaying the proper hard wired outputs to perform its driver side power seat functions.

1. Disconnect and isolate the battery negative cable.
2. Remove the power seat switch from the outboard seat cushion side shield.

Six-Way Power Seat Switch Continuity:

3. Use an ohmmeter to test the continuity of the power seat switch in each switch position. See the Power Seat Switch Continuity chart. If OK, refer to Power Seat Track or Power Seat Recliner. If not OK, replace the faulty power seat switch unit.