2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1124
* DTC P161C is a Type C DTC.
Diagnostic Aids
Low voltage or a momentary loss of power or ground to the ECM may cause a DTC to set. Verify the following:
* 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).
* The ECM ground circuits do not have an open or high resistance.
* The ECM power circuits do not have an open, short to ground, or high resistance.
Reference Information
Schematic Reference
Engine Controls Schematics (LAU) (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/Connector End Views By Name)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/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. Observe the DTC information with a scan tool. DTC P0602, P0603, P0604, P0605, P0606, P0610, P0614, P0630, P06D1, P160D, P160E,
P161C, or P2610 should not set.
2. 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.
Circuit/System Testing
1. Ignition ON, clear the DTC information with a scan tool. Observe the scan tool DTC information.
瀚慖f DTC P0602, P0610, P0614, P0630, P160D, P160E, or P161C failed this ignition, reprogram the K20 ECM. Refer to Control Module
References (See: Testing and Inspection/Programming and Relearning). If the DTC resets, replace the K20 ECM.
2. Observe the DTC information with a scan tool. Verify DTC P0603, P0604, P0605, P0606, P06D1, or P2610 does not set.
瀚慖f a DTC failed this ignition, replace the K20 ECM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement, setup, and
programming
P162B
DTC P162B
Diagnostic Instructions
