2010 Cadillac CTS Sedan AWD V6-3.0L Page 1502

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2010 Cadillac CTS Sedan AWD V6-3.0L Page 1502



P2610 should not set.



2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the



conditions that you observed from the Freeze Frame/Failure Records data.



Circuit/System Testing



1. Test the voltage and ground inputs to the K20 ECM for the following:



* A short



* An open



* High resistance



2. Ignition ON, observe the DTC information with a scan tool.



瀚慖f DTC P0602, P0610, or P0630 failed this ignition, program the K20 ECM. If the DTC resets, replace the K20 ECM.



3. Observe the DTC information with a scan tool. DTC P0601, P0603, P0604, P0606, P0607, P062B, P062F, P16F3, or P2610 should not set.



瀚慖f a DTC failed this ignition, replace the K20 ECM.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement, setup, and



programming



P0601-P0604, P0606, or P062F



DTC P0601-P0604, P0606, or P062F



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC P0601



- Control Module Read Only Memory (ROM)



DTC P0602



- Control Module Not Programmed



DTC P0603



- Control Module Long Term Memory Reset



DTC P0604



- Control Module Random Access Memory (RAM)



DTC P0606



- Control Module Internal Performance



DTC P062F



- Control Module Long Term Memory Performance



Circuit/System Description



The internal fault detection is handled inside the fuel pump control module. No external circuits are involved.



Conditions for Running the DTC



The fuel pump control module runs the program to detect an internal fault when power up is commanded. The only requirements are voltage and



ground. This program runs even if the voltage is out of the valid operating range.

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