2010 Cadillac CTS Sedan AWD V6-3.6L Page 1136

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1136

* The ignition is ON or the engine is running.

* The DTCs run continuously within the enabling conditions.

Conditions for Setting the DTC

P0192

The ECM detects that the signal circuit voltage is less than 0.2 V for greater than 5 seconds.

P0193

The ECM detects that the signal circuit voltage is greater than 4.8 V for greater than 5 seconds.

Action Taken When the DTC Sets

* DTCs P0192 and P0193 are Type A DTCs.

* A message center or an indicator may display Reduced Engine Power.

Conditions for Clearing the DTC

DTCs P0192 and P0193 are Type A DTCs.

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. Ignition ON, observe the DTC information with a scan tool, DTC P0641, P0642, or P0643 should not be set.

瀚慖f a DTC is set, refer to DTC P0641-P0643, P0651-P0653, or P0697-P0699 (ECM, LLT) ( See: P Code Charts/P0641).

2. Engine idling, observe the DTC information with a scan tool. DTC P0192 or P0193 should not set.

3. 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 OFF, disconnect the multi-way harness connector X117 at the rear of the intake manifold.

2. Remove the fuse that supplies B+ to terminal 56-X2 of the K20 ECM.

Note: Testing for steps 3 through 7 is performed on the ECM side of the multi-way harness connector.

3. Ignition OFF, test for less than 5 ohm between the low reference circuit terminal 5 and ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20