Power Seats Diagnostic System Check

2001 Chevrolet Cavalier LS, 2.4 TSECTION Power Seats Diagnostic System Check
WARNING: This page is about a different car, the 2000 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect scan tool to Data Link Connector (DLC) located under steering column. If scan tool powers up, go to next step. If scan tool does not power up, go to SCAN TOOL DOES NOT POWER UP under SELF-DIAGNOSTIC SYSTEM in BODY CONTROL MODULES - CORVETTE article.
  2. Turn ignition on. Attempt to establish communication with the Left Door Control Module (LDCM), Seat Control Module (SCM), Body Control Module (BCM) and Powertrain Control Module (PCM). If scan tool communicates with all systems, go to next step. If scan tool does not communicate with all systems, go to SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SELF-DIAGNOSTIC SYSTEM in BODY CONTROL MODULES - CORVETTE article.
  3. Using scan tool, SCM module DTC function. Select the LDCM DTC function. Select BCM DTC function. Select PCM DTC function. If scan tool displays any DTCs, go to next step. If scan tool does not display and DTCs, diagnose by symptom. See SYMPTOM INDEX  table under SYSTEM TESTS.
  4. If scan tool displays any DTCs which begin with "U", go to SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SELF-DIAGNOSTIC SYSTEM in BODY CONTROL MODULES - CORVETTE article. If scan tool does not display any DTCs that begin with "U", go to next step.
  5. If DTC B0605 is not set, go to next step. If DTC B0605 is set, go to BODY CONTROL MODULE DIAGNOSTIC SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM in BODY CONTROL MODULES - CORVETTE article.
  6. If DTC P0562 or P0563 are set, go to appropriate powertrain On-Board Diagnostic (OBD) system check in appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If DTC P0562 or P0563 are not set, perform appropriate test in accordance with DTC retrieved. See POWER SEAT DIAGNOSTIC TROUBLE CODES (DTCS)  table.
POWER SEAT DIAGNOSTIC TROUBLE CODES (DTCS)

DTC Description
B0851 (1) Battery 1 Out Of Range
B0846 (1) Battery 2 Out Of Range
B0856 (1) 5-Volt Reference Out Of Range
B2002  Fore/Aft Seat Motor Open Or Shorted
B2007  Front Vertical Seat Motor Open Or Shorted
B2012  Rear Vertical Seat Motor Open Or Shorted
B2172  Seat Front Up Switch Shorted To Ground
B2177  Seat Front Down Switch Shorted To Ground
B2182  Seat Rear Up Switch Shorted To Ground
B2187  Seat Rear Down Switch Shorted To Ground
B2192  Seat Forward Switch Shorted To Ground
B2197  Seat Reverse Switch Shorted To Ground
B2600  Seat Motor To Battery Voltage
B2605 (1) Seat Front Vertical Position Sensor Failure
B2606 (1) Seat Rear Vertical Position Sensor Failure
B2607 (1) Seat Horizontal Position Sensor Failure
(1) See SELF-DIAGNOSTIC SYSTEM in MEMORY SYSTEMS - CORVETTE article.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.