2010 Cadillac CTS Sedan AWD V6-3.6L Page 1505
error is detected 3 times, then a 5 s delay for MIL ON.
P0604
The ECM detects random access memory (RAM) errors. The condition exists, then a 5 s delay for MIL ON.
P0606
The ECM detects an internal error of monitoring software for the throttle actuated control (TAC) system. The condition exists, then a 5 s delay for
MIL ON.
P167D
The ECM detects a condition with the integrated circuits of the ignition coil driver module.
P2610
The ECM detects the engine off timer signal is missing or not valid.
Action Taken When the DTC Sets
* DTCs P0601, P0602, P0603, P0604, and P0606 are Type A DTCs.
* DTCs P167D and P2610 are Type B DTCs.
Conditions for Clearing the DTC
* DTCs P0601, P0602, P0603, P0604, and P0606 are Type A DTCs.
* DTCs P167D and P2610 are Type B DTCs.
Diagnostic Aids
Verify that the battery cables are clean and tight, and the battery is fully charged. Refer to Battery Inspection/Test (See: Starting and
Charging/Testing and Inspection/Component Tests and General Diagnostics/Battery Inspection/Test).
Reference Information
Schematic Reference
Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics
(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit
Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)
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. 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.
2. DTC P0601, P0602, P0603, P0604, P0606, P167D, or P2610 should not reset.
Circuit/System Testing
1. Test the voltage and ground inputs to the K20 ECM for the following:
