2010 Cadillac Truck SRX FWD 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.
