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DTC P0601-P0604 or P062F

DTC P0601-P0604 or P062F

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

Note

DTCs P0601, P0602, P0603, P0604 or P062F could set in other control modules. Verify the DTCs are set in the transmission control module (TCM).


DTC P0601

Control Module Read Only Memory Performance

DTC P0602

Control Module Not Programmed

DTC P0603

Control Module Long Term Memory Reset

DTC P0604

Control Module Random Access Memory Performance

DTC P062F

Control Module Long Term Memory Performance

Circuit/System Description

This is an internal fault detection of the control solenoid valve assembly. This fault is handled inside the control solenoid valve assembly and no external circuits are involved.

Conditions for Running the DTC

Ignition voltage is between 8.6 volts and 18.0 volts.

Conditions for Setting the DTC

P0601

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

P0602

The TCM has not been programmed and is unable to detect the start program.

P0603

The TCM has detected a memory checksum error.

P0604

The TCM has detected a random access memory (RAM) test error 5 or greater times.

P062F

The TCM has detected a non-volatile memory error during power-down.

Action Taken When the DTC Sets


P0601, P0602, P0603, P0604, or P062F

• DTCs P0601, P0602, P0603, P0604, and P062F are Type A DTCs.

• The TCM limits the transmission to Reverse and 5th gear operation.

• The TCM commands maximum line pressure.

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

• The TCM freezes transmission adaptive functions.

• The TCM commands the high side driver OFF.

• The TCM inhibits Tap Up/Down function.

• The TCM inhibits manual shifting of forward gears.


Conditions for Clearing the DTC

DTCs P0601, P0602, P0603, P0604, and P062F are Type A DTCs.

Reference Information

Description and Operation

Electronic Component Description for control solenoid valve assembly

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification


1.
Warning

Before programming a control module, the following must be observed, or control module damage may occur:

• The TIS terminal, MDI, and/or scan tool must have the latest software.

• The vehicle battery must be fully charged. The battery voltage should be between 12.6-15.0 volts.

• The TIS terminal, MDI, and/or scan tool connections must be secure.

• A battery charger must NOT be connected to the battery when programming a control module.


Ignition OFF for 1 minute.

2. Ignition ON, with a scan tool, verify that DTC P0602 is not set.

3. If the dtc is set, program K71 TCM. See Programming and setup of the control solenoid valve assembly and the transmission control module (6T70/6T75) . If the diagnostic trouble code returns the control solenoid valve assembly Q8 must be replaced. Refer to Control Solenoid Valve and Transmission Control Module Assembly Replacement .

4. Check the DTC information with a diagnostic tool. DTCs P0601, P0603, P0604, and P062F should not set.

5. If DTC P0601, P0603, P0604, or P062F sets, replace the Q8 control solenoid valve assembly.

6. After you complete the steps described above, check that the diagnostic trouble code does not return by driving the vehicle according to the conditions for running diagnostic trouble codes (DTC). You can also drive the vehicle according to the conditions you have seen in Freeze Frame/Failure records. If the vehicle passes the Circuit/System Verification procedure, refer to Testing for Intermittent Conditions and Poor Connections .


Repair Instructions

Note

Perform the Resetting of the transmission's adaption every time a transmission component is serviced.


Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for control solenoid valve assembly replacement, setup, and programming