Wednesday, May 26, 2021

2010 Cadillac Truck SRX AWD V6-3.0L Page 1580

2010 Cadillac Truck SRX AWD V6-3.0L Page 1580



DTC P0602



- Control Module Not Programmed



DTC P0603



- Control Module Long Term Memory Reset



DTC P0604



- Control Module Random Access Memory Performance



Circuit/System Description



This is an internal fault detection of the transmission control module (TCM). This fault is handled inside the TCM and no external circuits are



involved.



Conditions for Running the DTC



The TCM runs the program to detect an internal condition at key ON. The only requirements are voltage and ground. This program runs even if the



voltage is out of the valid operating range.



Conditions for Setting the DTC



P0601



The read only memory (ROM) test has failed 5 or more times.



P0602



The TCM has been unable to detected the start program.



P0603



The TCM has detected a memory checksum error.



P0604



The TCM random access memory (RAM) test has failed 5 or more times.



Action Taken When the DTC Sets



P0601, P0602, P0603, P0604



* DTCs P0601, P0603, P0604 are Type A DTCs.



* The TCM commands maximum line pressure.



* The TCM forces the torque converter clutch (TCC) OFF.



* The TCM inhibits TCC engagement.



* The TCM freezes transmission adaptive functions.



* The TCM commands an immediate landing to 2nd gear.



Conditions for Clearing the DTC



DTCs P0601, P0602, P0603, P0604 are Type A DTCs.



Reference Information



Description and Operation



Transmission Component and System Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and



Operation/AF40-6 - Automatic Transmission/Transmission Component and System Description)



DTC Type Reference



Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code



(DTC) Type Definitions)



Scan Tool Reference



Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information



Circuit/System Verification



1. Engine running. Let the engine run for at least 1 min.



2. Ignition OFF for at least 30 s to allow for the complete shutdown of the TCM.



3. Ignition ON, verify that DTC P0602 is not set.

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