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Tahoe / Yukon Service Manual

DTC B196F

Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. DTC Descriptors DTC B196F Front Seat Adjuster Switch - Driver Symptom Byte Information: Symptom Byte List Circuit/System Description An internal fault is detected inside the switch. No external circuits are involved. Conditions for Running the DTC Vehicle ON. Power seat, lumbar, or bolster switch must be activated. Conditions for Setting the DTC The control module detects an internal switch fault. Action Taken When the DTC Sets The seat adjuster memory module may disable power seat, lumbar, and bolster functions. Conditions for Clearing the DTC The DTC clears when the diagnostics runs and passes. The history DTC will clear after 40 consecutive fault-free Vehicle ON/OFF cycles have occurred. Reference Information Schematic Reference Driver Seat Schematics Connector End View Reference Master Electrical Component List Description and Operation Memory Seats Description and Operation Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for scan tool information Circuit/System Verification

  1. Vehicle ON.
  2. Operate all power seat, lumbar, and bolster functions.
  3. Verify DTC B196F is not set. ⇒ If the DTC is set Replace the S64D Front Seat Adjuster Switch - Driver. ⇓ If the DTC is not set
  4. A fault is currently not present and may be an intermittent condition. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair. Front Seat Adjuster Switch Replacement