Grand Caravan V6-4.0L (2008)
Steering Mounted Controls Communication Module: Testing and Inspection
STEERING CONTROL MODULE
WARNING: To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before
attempting any steering wheel, steering column, airbag, seat belt tensioner, impact sensor, or instrument panel component diagnosis or service.
Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing
further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental
airbag deployment.
The hard wired circuits between components related to the SCM may be diagnosed using conventional diagnostic tools and procedures. Refer to
Diagrams/Electrical for the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair
procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors,
splices and grounds.
However, conventional diagnostic methods will not prove conclusive in the diagnosis of the SCM or the electronic controls or communication between
modules and other devices that provide some features of the SCM. The most reliable, efficient, and accurate means to diagnose the SCM or the
electronic controls and communication related to SCM operation requires the use of a diagnostic scan tool.
