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Tahoe / Yukon Service Manual

DTC P06AF

Engine Controls and Fuel - 3.0L LM2 Diesel | Diagnostic Information and Procedures | Document ID: 5253523 Diagnostic Instructions Perform the Diagnostic System Check prior to using this diagnostic procedure: Diagnostic System Check - Vehicle Review the description of Strategy Based Diagnosis: Strategy Based Diagnosis An overview of each diagnostic category can be found here: Diagnostic Procedure Instructions DTC Descriptor DTC P06AF Torque Management System Performance - Forced Engine Shutdown Circuit/System Description This diagnostic addresses malfunctions inside the control module. — K71 Transmission Control Module Conditions for Running the DTC Ignition = On Frequency the DTC runs = Continuously — After the running conditions are met Conditions for Setting the DTC K71 Transmission Control Module = Internal Malfunction Actions Taken When the DTC Sets DTCs listed in the DTC Descriptor category = Type A DTC Conditions for Clearing the DTC DTCs listed in the DTC Descriptor category = Type A DTC Diagnostic Aids A weak battery, low component/system voltage, or poor connections may cause this DTC to set. Reference Information Connector End View Reference Master Electrical Component List 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 Circuit/System Verification

  1. Ignition » On / Vehicle » In Service Mode
  2. Verify DTC P06AF is not set. ⇒ If DTC P06AF is set Replace the component: K71 Transmission Control Module ⇓ If DTC P06AF is not set
  3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data. Verify the DTC does not set. ⇒ If the DTC sets Replace the component: K71 Transmission Control Module ⇓ If the DTC does not set
  4. All OK. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification For control module replacement, programming, and setup refer to: Control Module References