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Tahoe / Yukon Service Manual

DTC P30D6-P30D9

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 P30D6 Control Module Processor Serial Peripheral Interface Bus 1 DTC P30D7 Control Module Processor Serial Peripheral Interface Bus 2 DTC P30D8 Control Module Processor Serial Peripheral Interface Bus 3 DTC P30D9 Control Module Processor Serial Peripheral Interface Bus 4 Circuit/System Description The K124 Image Processing Module monitors the internal processors and hardware functions. Conditions for Running the DTC Ignition ON Conditions for Setting the DTC The K124 Image Processing Module detects an internal malfunction. Action Taken When the DTC Sets The Super Cruise system is disabled. Conditions for Clearing the DTC The condition for the DTC is no longer present. Reference Information Schematic Reference Driver Assistance Systems Schematics Connector End View Reference Master Electrical Component List Description and Operation Super Cruise 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. Verify no other DTCs are set, except DTC P30D6, P30D7, P30D8, or P30D9. ⇒ If any other DTCs are set Diagnose all other DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle. ⇓ If no other DTCs are set
  2. Clear DTCs and operate the vehicle in the conditions that the customer experienced.
  3. Verify DTC P30D6, P30D7, P30D8, or P30D9 does not set. ⇒ If the DTC sets Replace the K124 Image Processing Module. ⇓ If the DTC does not set
  4. All OK. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair. Control Module References for control module replacement, programming, and setup.