Buick Regal: DTC P0601, P0602, P0603, or P0604
Diagnostic Instructions
- Perform the Diagnostic System Check prior to using this diagnostic
procedure: Refer to Diagnostic System
Check - Vehicle
- Review the description of Strategy Based Diagnosis: Strategy Based
Diagnosis
- An overview of each diagnostic category can be found here: Refer to
Diagnostic Procedure Instructions
DTC Descriptor
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
Circuit/System Description
For an overview of the component/system, refer to Electronic Component
Description
This diagnostic applies to microprocessor integrity conditions within the
control module. This diagnostic also checks
if the control module is not programmed, or is programmed incorrectly.
Conditions for Running the DTC
Ignition Voltage=On
Frequency the DTC runs=Continuously - After the running conditions are met
Conditions for Setting the DTC
P0601
ROM Malfunction
P0602
Programming Malfunction
P0603
EEPROM Performance/Malfunction
P0604
RAM Malfunction
Actions Taken When the DTC Sets
DTCs listed in the DTC Descriptor Category=Type A DTC
Conditions for Clearing the DTC
DTCs listed in the DTC Descriptor Category=Type A DTC
Reference Information
Schematic: Reference
Refer to Automatic Transmission Controls Wiring Schematics
Connector End View: Reference
Refer to Component Connector End View Index
Component View: Reference
Refer to Disassembled Views
Electrical Information: Reference
- Refer to Circuit Testing
- Refer to Connector Repairs
- Refer to Testing for Intermittent Conditions and Poor Connections
- Refer to Wiring Repairs
DTC Type: Reference
Refer to Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool: Reference
Refer to Control Module: References
Circuit/System Verification
1. Ignition - On / Vehicle - In Service Mode
2. Verify DTC P0601, P0602, P0603, P0604 is not set.
- Perform all necessary programming and setup procedures for the control
module:K71 Transmission
Control Module
- Verify the DTC does not set.
- If the DTC sets - Replace the component:K71 Transmission Control
Module
- Go to next step: If the DTC is not set
- All OK.
- Go to next step: If the DTC is not set
3. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair: Refer
to Diagnostic Repair Verification
For control module replacement, programming, and setup: Refer to Control
Module: References
READ NEXT:
Diagnostic Instructions
Perform the Diagnostic System Check prior to using this diagnostic
procedure: Refer to Diagnostic System
Check - Vehicle
Review the description of Strategy Based Diagnosi
Diagnostic Instructions
Perform the Diagnostic System Check prior to using this diagnostic
procedure: Refer to Diagnostic System
Check - Vehicle
Review the description of Strategy Based Diagnosi
Diagnostic Instructions
Perform the Diagnostic System Check prior to using this diagnostic
procedure: Refer to Diagnostic System
Check - Vehicle
Review the description of Strategy Based Diagnosi
SEE MORE:
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
D
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.
Diagnostic Fault