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Tahoe / Yukon Service Manual

DTC P100C or P100D

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 Descriptor DTC P100C Battery Sensor Temperature Erratic DTC P100D Battery Sensor Internal Temperature Circuit Erratic For symptom byte information refer to Symptom Byte List. Circuit/System Description The B110 Battery Monitor Module monitors the battery module and performs internal diagnostics. Conditions for Running the DTC The system voltage is above 11.00 V Propulsion Active Conditions for Setting the DTC DTC P100C or P100D The B110 Battery Monitor Module detects an internal fault. Action Taken When the DTC Sets DTC P100C and P100D are type B DTC. Conditions for Clearing the DTC DTC P100C and P100D are type B DTC. Reference Information Schematic Reference Starting and Charging Schematics Connector End View Reference Master Electrical Component List Description and Operation Charging System Description and Operation Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs DTC Type Reference Powertrain Diagnostic Trouble Code (DTC) Type Definitions Scan Tool Reference Control Module References for scan tool information Circuit/System Verification

  1. Vehicle in Service Mode ON.
  2. Verify DTC P100C or P100D is not set. ⇒ If the DTC is set Replace the B110 Battery Monitor Module ⇓ If the DTC is not set
  3. A fault is not currently present and may be an intermittent condition. Refer to Diagnostic Instructions. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair. Battery Monitor Module Replacement for B110 Battery Monitor Module replacement