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HOMESERVICE MANUALSCADILLAC1997SEVILLE SLSREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTSEATSMEMORY SYSTEMMEMORY SEAT MODULE (MSM) DIAGNOSTIC TROUBLE CODES (DTCS)MSM DTC B2130: SEAT MOTOR FAILUREDIAGNOSTIC PROCEDURES
1997 Cadillac Seville SLS

Diagnostic Procedures

1997 Cadillac Seville SLSSECTION Diagnostic Procedures
  1. Disconnect left forward/back motor connector. Connect a fused jumper wire between one forward/back motor terminal and battery voltage. Connect another fused jumper wire between other forward/back motor terminal and ground. If forward/back motor runs, go to next step. If forward/back motor does not run, go to step 32).
  2. Disconnect MSM Natural 6-pin connector C4. Using DVOM, check resistance between MSM harness connector C4 terminal "C" (Tan wire) and left forward/back motor harness connector terminal "A" (Tan wire). If resistance is less than 5 ohms, go to step 4). If resistance is not less than 5 ohms, go to next step.
  3. Repair open in circuit No. 285 (Tan wire) between left forward/back motor and MSM connector C4. Recheck system operation.
  4. Disconnect MSM Light Green 6-pin connector C2. Check resistance between MSM harness connector C2 terminal "A" (Light Green wire) and left forward/back motor harness connector terminal "B" (Light Green wire). If resistance is less than 5 ohms, go to step 6). If resistance is not less than 5 ohms, go to next step.
  5. Repair open in circuit No. 284 (Light Green wire) between left forward/back motor and MSM connector C2. Recheck system operation.
  6. Disconnect left rear height motor connector. Connect a fused jumper wire between one rear height motor terminal and battery voltage. Connect another fused jumper wire between other rear height motor terminal and ground. If rear height motor runs, go to next step. If rear height motor does not run, go to step 32).
  7. Using DVOM, check resistance between MSM harness connector C4 terminal "E" (Yellow wire) and left rear height motor harness connector terminal "B" (Yellow wire). If resistance is less than 5 ohms, go to step 9). If resistance is not less than 5 ohms, go to next step.
  8. Repair open in circuit No. 282 (Yellow wire) between left rear height motor and MSM connector C4. Recheck system operation.
  9. Check resistance between MSM harness connector C2 terminal "B" (Light Blue wire) and left rear height motor harness connector terminal "A" (Light Blue wire). If resistance is less than 5 ohms, go to step 11). If resistance is not less than 5 ohms, go to next step.
  10. Repair open in circuit No. 283 (Light Blue wire) between left rear height motor and MSM connector C2. Recheck system operation.
  11. Disconnect left front height motor connector. Connect a fused jumper wire between one front height motor terminal and battery voltage. Connect another fused jumper wire between other front height motor terminal and ground. If front height motor runs, go to next step. If front height motor does not run, go to step 32).
  12. Using DVOM, check resistance between MSM harness connector C4 terminal "A" (Dark Green wire) and left front height motor harness connector terminal "B" (Dark Green wire). If resistance is less than 5 ohms, go to step 14). If resistance is not less than 5 ohms, go to next step.
  13. Repair open in circuit No. 286 (Dark Green wire) between left front height motor and MSM connector C4. Recheck system operation.
  14. Disconnect MSM Black 6-pin connector C3. Using DVOM, check resistance between MSM harness connector C3 terminal "F" (Dark Blue wire) and left front height motor harness connector terminal "A" (Dark Blue wire). If resistance is less than 5 ohms, go to step 16). If resistance is not less than 5 ohms, go to next step.
  15. Repair open in circuit No. 287 (Dark Blue wire) between left front height motor and MSM connector C3. Recheck system operation.
  16. Disconnect left recline motor connector. Connect a fused jumper wire between one recline motor terminal and battery voltage. Connect another fused jumper wire between other recline motor terminal and ground. If recline motor runs, go to next step. If recline motor does not run, go to step 32).
  17. Using DVOM, check resistance between MSM harness connector C4 terminal "D" (Light Green wire) and left recline motor harness connector terminal "B" (Light Green wire). If resistance is less than 5 ohms, go to step 19). If resistance is not less than 5 ohms, go to next step.
  18. Repair open in circuit No. 276 (Light Green wire) between left recline motor and MSM connector C4. Recheck system operation.
  19. Check resistance between MSM harness connector C2 terminal "F" (Light Blue wire) and left recline motor harness connector terminal "A" (Light Blue wire). If resistance is less than 5 ohms, go to step 21). If resistance is not less than 5 ohms, go to next step.
  20. Repair open in circuit No. 277 (Light Blue wire) between left recline motor and MSM connector C2. Recheck system operation.
  21. Disconnect left in/out lumbar motor connector. Connect a fused jumper wire between one in/out lumbar motor terminal and battery voltage. Connect another fused jumper wire between other in/out lumbar motor terminal and ground. If in/out lumbar motor runs, go to next step. If in/out lumbar motor does not run, go to step 32).
  22. Using DVOM, check resistance between MSM harness connector C4 terminal "F" (Pink wire) and left in/out lumbar motor harness connector terminal "A" (Pink wire). If resistance is less than 5 ohms, go to step 24). If resistance is not less than 5 ohms, go to next step.
  23. Repair open in circuit No. 610 (Pink wire) between left in/out lumbar motor and MSM connector C4. Recheck system operation.
  24. Check resistance between MSM harness connector C3 terminal "B" (Dark Blue wire) and left in/out lumbar motor harness connector terminal "B" (Dark Blue wire). If resistance is less than 5 ohms, go to step 26). If resistance is not less than 5 ohms, go to next step.
  25. Repair open in circuit No. 611 (Dark Blue wire) between left in/out lumbar motor and MSM connector C3. Recheck system operation.
  26. Disconnect left up/down lumbar motor connector. Connect a fused jumper wire between one up/down lumbar motor terminal and battery voltage. Connect another fused jumper wire between other up/down lumbar motor terminal and ground. If up/down lumbar motor runs, go to next step. If up/down lumbar motor does not run, go to step 32).
  27. Using DVOM, check resistance between MSM harness connector C3 terminal "A" (Tan wire) and left up/down lumbar motor harness connector terminal "A" (Tan wire). If resistance is less than 5 ohms, go to step 29). If resistance is not less than 5 ohms, go to next step.
  28. Repair open in circuit No. 768 (Tan wire) between left up/down lumbar motor and MSM connector C3. Recheck system operation.
  29. Check resistance between MSM harness connector C3 terminal "E" (Purple wire) and left up/down lumbar motor harness connector terminal "B" (Purple wire). If resistance is less than 5 ohms, go tostep 26). If resistance is not less than 5 ohms, go to next step.
  30. Repair open in circuit No. 767 (Purple wire) between left up/down lumbar motor and MSM connector C3. Recheck system operation.
  31. Clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES (DTCS)  under SELF-DIAGNOSTICS. Cycle ignition. Operate all left seat motors. If MSM DTC B2130 resets, replace MSM. Recheck system operation.
  32. Replace suspect seat motor. See appropriate SEATS - POWER article. Recheck system operation.
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