Circuit/System Verification
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- Ignition ON, verify that all manual power seat functions operate when being controlled by the seat adjuster switches.
- If all seat functions do not operate, refer to Power Seat Inoperative (Without Memory A45 ) or Power Seat Inoperative (With Memory A45) .
- Ignition ON, observe the scan tool Memory Seat Module Lumbar Switch parameters while pressing the appropriate lumbar switch. The reading should change between Inactive and Active.
- If the reading does not change between the specified values, refer to Lumbar Switch Circuit Test .
- If all lumbar switch inputs to the MSM function normal, refer to Lumbar Motor Control Circuit Test .