2010 Cadillac Truck Escalade RWD V8-6.2L Page 1659

2010 Cadillac Truck Escalade RWD V8-6.2L Page 1659

1. Start the engine.

2. Allow the engine to reach normal operating temperature.

3. Allow the engine to idle.

4. Observe the DTC information with a scan tool.

瀚慖f the scan tool indicates P0016 has failed this ignition cycle, continue with the Circuit/System Testing.

5. Operate the vehicle within the Conditions For Running the DTC. You may also operate the vehicle within the conditions that are captured in

the Freeze Frame/Failure Records Data List.

Circuit/System Testing

Note: You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.

1. Inspect the engine front cover area, or review the service history of the vehicle for any recent repairs involving the timing chain, timing chain

tensioner, camshaft, crankshaft, camshaft actuator, or sprockets.

瀚慖f recent repairs were made, inspect the timing chain, timing chain tensioner, and both sprockets for proper timing alignment or indexing.

2. Remove the engine front cover, refer to Engine Front Cover Replacement (See: Engine, Cooling and Exhaust/Engine/Timing

Components/Timing Cover/Service and Repair) and inspect the timing chain, timing chain tensioner, and sprockets for wear or damage.

瀚慖f any components are worn or damage, replace as necessary.

Repair Instructions

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

With 6.0L or 6.2L

DTC P0016 (With 6.0L or 6.2L)

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 Descriptor

DTC P0016

- Crankshaft Position (CKP) Camshaft Position (CMP) Correlation

Circuit/System Description

The engine control module (ECM) uses the crankshaft position (CKP) sensor and the camshaft position (CMP) sensor pulses to monitor the

correlation between the crankshaft and the camshaft position. The crankshaft reluctor wheel consists of a 60-tooth pattern with 2 teeth missing for

the reference gap. Each tooth is evenly spaced 6 degrees apart, except for the reference gap. The camshaft reluctor wheel has 4 teeth, 2 narrow, and

2 wide. The 4 trailing edges of each tooth are evenly spaced at 90 degrees apart around the circumference of the camshaft sprocket. With the engine

running, and the CMP actuator in the parked position, the ECM expects the camshaft signal pulses to occur 36 crankshaft degrees before top dead

center (BTDC) for cylinder number 1, and every 90 degrees thereafter.

Conditions for Running the DTC

* DTC P0335, P0336, P0340, P0341, P0641, or P0651 is not set.

* The engine is running.

* The engine speed is less than 2,000 RPM.

* The CMP actuator is commanded to the parked position.

* DTC P0016 runs continuously when the above conditions are met.

Conditions for Setting the DTC

The ECM detects that the CMP sensor pulses occur more than 11 crank degrees before, or 11 crank degrees after, nominal position for 24 out of 30