2010 Cadillac CTS Sedan AWD V6-3.6L Page 1190
* The engine is running.
* The ignition voltage is between 11-18 V.
* The DTCs run continuously when the above conditions are met.
Conditions for Setting the DTC
P2147, P2150, P2153, P2156, P216B, or P216E
The ECM detects the injector high voltage supply circuit is shorted to ground for greater than 2 s.
P2148, P2151, P2154, P2157, P216C, or P216F
The ECM detects the injector high voltage supply circuit is shorted to voltage for greater than 2 s.
Action Taken When the DTC Sets
DTCs P2147, P2148, P2150, P2151, P2153, P2154, P2156, P2157, P216B, P216C, P216E, and P216F are Type A DTCs.
Conditions for Clearing the DTC
DTCs P2147, P2148, P2150, P2151, P2153, P2154, P2156, P2157, P216B, P216C, P216E, and P216F are Type A DTCs.
Diagnostic Aids
* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (w/LLT) (See:
Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector
Solenoid Coil Test)Fuel Injector Solenoid Coil Test (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel
Injector/Testing and Inspection).
* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector
Control Circuit Status parameters. An Injector Control Circuit Status parameter will change from OK or Not Run to Fault if there is a
condition with the circuit or a connection.
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)
Description and Operation
Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)
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. Observe the DTC information with a scan tool. DTC P0685 or P1682 should not set.
瀚慖f a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble
Code (DTC) List - Vehicle).
2. Engine operating, observe the DTC information with a scan tool. DTC P2147, P2148, P2150, P2151, P2153, P2154, P2156, P2157, P216B,
P216C, P216E, or P216F should not set.
3. Observe the scan tool Current Misfire Counter parameters. The Current Misfire Counters should not increment.
