Initial Inspection and Diagnostic Overview

The Seat Control Module (SCM) use information from other systems in order to execute some functions. Therefore, before further diagnosis, review the general information on how the SCM operates and how each system interacts with the SCM. This will save diagnostic time, future misdiagnosis, and unnecessary parts replacement.

Use a scan tool in order to diagnose the SCM when referred to in diagnostic procedures. In addition to displaying DTCs, the SCM displays the input status and the data values used. The SCM can also command many of its subsystems ON and OFF. Any of these features can be selected using the scan tool.

Become very familiar with the SCMs capabilities and diagnostic features. These self-diagnostic features are referenced in the DTC tables and are very useful in diagnosing non-DTC setting malfunctions as well. Replace a SCM only if the diagnostic procedures specifically direct you to do so. Every input to the SCM and every output from the SCM is short to ground/short to battery protected. Therefore, a SCM does not automatically need to be replaced when a short is found in the wiring. Repair the wiring first. Then check the system for further problems. Most system malfunctions are traceable to faulty wiring and connectors, and occasionally components. The SCM are very reliable and not the likely cause of a system malfunction. A SCM replacement before a complete diagnosis will usually result in a recurrence of the original complaint malfunction.