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Home >> Cadillac >> 2000 >> Seville STS >> Repair and Diagnosis >> Body & Frame >> Seats >> Power Seat System >> Self-Diagnostic System >> Power Seat Diagnostic System Check
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Power Seat Diagnostic System Check

  1. Install scan tool. If scan tool powers up, go to next step. If scan tool does not power up, perform appropriate diagnostic procedure. See SELF-DIAGNOSTIC SYSTEM in appropriate BODY CONTROL MODULES article.
  2. Turn ignition on, engine off. Following scan tool manufacturer's instructions, attempt to establish communication with Driver Door Module (DDM), Memory Seat Module (MSM), Passenger Front Door Module (PFDM), Left Rear Door Module (LRDM), Right Rear Door Module (RRDM) and Rear Integration Module (RIM). If communication with DDM, MSM, PFDM, LRDM, RRDM and RIM is established, go to next step. If communication with DDM, MSM, PFDM, LRDM, RRDM and RIM is not established, diagnose communication problem with class 2 device. See SELF-DIAGNOSTIC SYSTEM in appropriate BODY CONTROL MODULES article.
  3. Select display DTC function for DDM, MSM, PFDM, LRDM, RRDM and RIM. Record all displayed DTCs, status of displayed DTCs and module that set the DTC. If DTCs are displayed, perform appropriate test. See DIAGNOSTIC TROUBLE CODE INDEX  table. If no DTCs are displayed, diagnose by symptom. See SYMPTOM TESTS  .
DIAGNOSTIC TROUBLE CODE INDEX

DTC Description
B1000, B1004, B1007, B1009, B1327 Or B1328 (1)
B1735  Driver Front Up Switch Failed
B1740  Driver Front Down Switch Failed
B1745  Driver Rear Up Switch Failed
B1750  Driver Rear Down Switch Failed
B1755  Driver Forward Switch Failed
B1760  Driver Rearward Switch Failed
B1815  Driver Recline Forward Switch Failed
B1820  Driver Recline Rearward Switch Failed
B1825  Driver Recline Sensor Failed
B1830  Driver Lumbar Forward Switch Failed
B1835  Driver Lumbar Rearward Switch Failed
B1840  Driver Lumbar Up Switch Failed
B1845  Driver Lumbar Down Switch Failed
B1850  Driver Lumbar Forward/Aft Sensor Failed
B1860  Driver Lumbar Up/Down Sensor Failed
B1870  Driver Head Restraint Up Switch Failed
B1875  Driver Head Restraint Down Switch Failed
B1900  Driver Head Restraint Up/Down Sensor Failed
B2355  Driver Front Vertical Sensor Failed
B2365  Driver Rear Vertical Sensor Failed
B2375  Driver Horizontal Sensor Failed
B3793  Memory Seat Module Over Current
UXXXX (2)
(1) See appropriate BODY CONTROL MODULES article.
(2) For any DTC beginning with the letter "U", diagnose communication problem with class 2 device. See SELF-DIAGNOSTIC SYSTEM in appropriate BODY CONTROL MODULES article.
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