Memory Positioning Module: Testing and Inspection

DIAGNOSIS AND TESTING - MEMORY SEAT MODULE

In order to obtain conclusive testing of the power seats with and without the memory system option, the Controller Area Network (CAN) bus, and all of the electronic modules that provide inputs to, or receive outputs from the memory system components must be checked. Use a scan tool and the proper diagnostic information to accurately diagnose the power seat/memory seat systems.

If the driver power seat exhibits an interrupted or jerky motion, ensure the wire harness is connected correctly. To verify the concern, obtain a scan tool and energize each axis one at a time. If any axis stops in approximately 2 seconds (without hitting the end of travel), the feedback for that axis may have an open, short or be incorrectly connected. Check the wiring to that axis (module to motor). Repair any wiring problems and retry that axis. Refer to the appropriate wiring information for complete circuit schematic or connector pin-out information.

NOTE:
Vehicles equipped with the memory/heated seat option utilize a low voltage cut-off feature. This feature turns off the 12V power to the power seat system anytime vehicle voltage is below 11.0V. Be certain to check the vehicle electrical system for proper voltage anytime the power seat system appears inoperative.

Before any testing of the power seat system is attempted, the battery should be fully-charged.