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Tahoe / Yukon Service Manual

DTC C2A1E

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 C2A1E Brakes Overheated - System Disabled Symptom Byte Information: Symptom Byte List Circuit/System Description For an overview of the component/system, refer to: ABS Description and Operation Conditions for Running the DTC Ignition/Vehicle = ON Conditions for Setting the DTC Brake System Calculated Component Overtemperature Actions Taken When the DTC Sets Brake System Warning Indicator = Off Conditions for Clearing the DTC The conditions for setting the DTC no longer exist. A history DTC will clear after 40 consecutive malfunction-free ignition cycles. Diagnostic Aids This DTC does not indicate any system malfunction. DTC C2A1E indicates there was excessive system activation in the following system(s) that caused the high temperature: – Antilock Braking System – Traction Control System – Vehicle Stability Control Reference Information Schematic Reference Antilock Brake System Schematics Connector End View Reference Master Electrical Component List Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References Circuit/System Verification

  1. Discuss with the customer about the driving conditions when the concern occurred.
  2. Verify no other DTCs are set. ⇒ If any other DTCs are set Refer to: Diagnostic Trouble Code (DTC) List - Vehicle ⇓ If no other DTCs are set
  3. Under normal operating conditions: Verify DTC C2A1E is not set. ⇒ If the DTC sets Replace the component: K160 Brake System Control Module ⇓ If the DTC is 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