2010 Cadillac Truck SRX FWD V6-3.0L Page 1408

2010 Cadillac Truck SRX FWD V6-3.0L Page 1408

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 Views

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

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 Testing

Note: The Crankshaft Position System Variation Learn Procedure may have to be repeated up to 5 times before the procedure is successful.

1. Perform the Crankshaft Position System Variation Learn (LF1) (See: Powertrain Management/Computers and Control Systems/Crankshaft

Position Sensor/Testing and Inspection) procedure. The scan tool should display Learned Successful.

瀚慖f the Crankshaft Position System Variation Learn Procedure cannot be performed successfully, inspect for the following conditions:

* Worn crankshaft main bearings

* A damaged or misaligned reluctor wheel

* Excessive crankshaft runout

* A damaged crankshaft-Refer to Crankshaft and Bearing Cleaning and Inspection (See: Engine, Cooling and Exhaust/Engine/Service and

Repair/Overhaul/66. Crankshaft and Bearing Cleaning and Inspection).

* Interference in the signal circuit of the crankshaft position sensor

* The ignition switch is in the ON position until there is insufficient system voltage.

* An ECM power disconnect with the ignition ON that may have erased the crankshaft position system variation values and set DTC P0315

* Debris between the crankshaft position sensor and the reluctor wheel

2. Verify the Learn Procedure is successful.

瀚慖f the K20 ECM is unable to complete the learn procedure, replace the K20 ECM.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after using this diagnostic procedure.

Control Module References (See: Testing and Inspection/Programming and Relearning)for ECM replacement, setup, and programming

P0324

DTC P0324-P0328, P0330-P0333, P06B6, or P06B7 (LF1)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0324

- Knock Sensor System Performance

DTC P0325

- Knock Sensor Circuit Bank 1

DTC P0326

- Knock Sensor Performance Bank 1