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Tahoe / Yukon Service Manual

DTC B196E

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 B196E Front Seat Bolster Memory Module - Passenger Symptom Byte Information: Symptom Byte List Circuit/System Description An internal fault is detected inside the bolster module. No external circuits are involved. Conditions for Running the DTC Ignition ON. Lumbar/bolster switch request or lumbar/bolster control must be activated. Conditions for Setting the DTC The seat adjuster memory module detects an internal bolster module fault. Action Taken When the DTC Sets The seat adjuster memory module may disable lumbar and bolster functions. Conditions for Clearing the DTC The DTC clears when the diagnostic runs and passes. The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred. Reference Information Schematic Reference Passenger Seat Schematics Connector End View Reference Master Electrical Component List Description and Operation Lumbar Support/Massage Description and Operation Power Seats System 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. Ignition ON.
  2. Operate all lumbar and bolster functions.
  3. Verify DTC B196E is not set. ⇒ If the DTC is set Replace the K104P Front Seat Bladder Control Module - Passenger Primary. ⇓ 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 Back Lumbar Replacement for K104P Front Seat Bladder Control Module - Passenger Primary