2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 937
瀚慖f you find a condition with the timing chains or tensioners, repair as necessary.
2. Inspect the crankshaft reluctor wheel for being mis-positioned on the crankshaft.
瀚慖f you find a condition with the crankshaft, repair as necessary.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Timing Chain Alignment Diagram (See: Engine, Cooling and Exhaust/Engine/Timing Components/Timing Component Alignment
Marks/Locations)
* Camshaft Timing Drive Components Cleaning and Inspection (See: Engine, Cooling and Exhaust/Engine/Service and Repair/Overhaul/81.
Camshaft Timing Drive Components Cleaning and Inspection)
* Crankshaft and Bearing Cleaning and Inspection (See: Engine, Cooling and Exhaust/Engine/Service and Repair/Overhaul/66. Crankshaft
and Bearing Cleaning and Inspection)
P0009
DTC P0008 or P0009
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 P0008
- Engine Position System Performance Bank 1
DTC P0009
- Engine Position System Performance Bank 2
Circuit/System Description
The engine control module (ECM) tests for a misalignment between both camshafts on one bank of the engine and the crankshaft. The
misalignment would be at an idler sprocket for either bank or at the crankshaft. Once the ECM learns the position of both camshafts on one bank of
the engine, the ECM compares the learned values to a reference value. The ECM will set a DTC if both learned values for one bank of the engine
are exceeding a calibrated threshold in the same direction.
Conditions for Running the DTC
* DTC P0010, P0011, P0013, P0014, P0020, P0021, P0023, P0024, P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368,
P0391, P0392, P0393, P2088, P2089, P2090, P2091, P2092, P2093, P2094, or P2095 is not set.
* The engine is operating for greater than 2 s.
* The engine must accelerate such that the CMP actuator system is commanded from the park position to the phased position. This is
considered a cam control cycle. There must be a minimum of 2 cam control cycles for at least 2.5 s each, in the phased position.
* DTC P0008 and P0009 run continuously once the above conditions are met, approximately 600 s.
Conditions for Setting the DTC
The ECM detects that both camshafts on either bank of the engine are mis-aligned with the crankshaft for greater than 1 s or for a cumulative time
of 4 s.
Action Taken When the DTC Sets
DTC P0008 and P0009 are type B DTCs.
Conditions for Clearing the DTC
DTC P0008 and P0009 are type B DTCs.
