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2011 - DS - RAM 1500 PICKUP - 3.7L MAGNUM V6

P0016-CRANKSHAFT/ TIMING MISALIGNMENT - BANK 1 SENSOR 1

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

For proper control and combustion stability the Camshaft (CMP) and Crankshaft (CKP) positions must be aligned and known so that and spark timing can be introduced at the intended and /Exhaust positions. During vehicle manufacturing, at end of line, or if a / Relearn is performed, the system learns the difference between the Camshaft and Crankshaft position in terms of engine degrees and stores it in the EEPROM. During every following driving cycle, the Powertrain Control Module (PCM) uses this value to compare.

Within a driving cycle, once the CMP position and CKP position are known and verified they are considered “locked.” This diagnostic will only run when both sensor signals are in the “locked” state. Engine position is constantly tracked as the CMP Sensor and CKP Sensor signals are monitored by the PCM. An engine rotating at a constant speed would produce engine signals that match the nominal pattern exactly. With engine acceleration and deceleration the engine signals are compressed or stretched in time relative to nominal timing. The PCM takes into account and adjusts for any acceleration/ deceleration rates that are in effect.

The misalignment fault accounts for angular deviation between the CMP Sensor and CKP Sensor signals due to miss builds, chain stretch, or skipped tooth. This fault results from the difference between the positions as indicated by the CMP Sensor and CKP Sensor signals. The result is only valid if both positions are “locked”.

• When Monitored:

With the engine speed between 480 and 6816 rpm and no Camshaft Position (CMP) Sensor or Crankshaft Position (CKP) Sensor DTCs detected. • Set Condition:

The difference between the Bank 1 Exhaust Camshaft position and the Crankshaft position is more than 10.0 degrees. One Trip Fault. Three good trips to turn off the MIL.

Possible Causes

INCORRECT ENGINE OIL VISCOSITY OR ENGINE OIL AERATED OR CONTAMINATED INSUFFICIENT OIL PRESSURE DUE TO A MECHANICAL FAILURE IN THE OILING SYSTEM CAMSHAFT 1/2 OIL CONTROL VALVE FAULTY CAMSHAFT 1/2 PHASER/TARGET WHEEL TIMING CHAIN/SPROCKET ALIGNMENT BROKEN OR FAULTY TIMING CHAIN TENSIONER OR GUIDES

1 Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

1. CHECK FOR AN ACTIVE DTC

NOTE: Perform any Service Bulletins or Star Cases relating to this fault before continuing with this test procedure.

NOTE: Diagnose and repair any Camshaft Oil Control Valve Circuit or Slow Response DTCs before continuing with this diagnostic test.

NOTE: If a Cam Phaser or Camshaft Oil Control Valve is stuck, there may also be a Camshaft Position Slow Response and/or Multiple Misfire DTC present. 1. Turn the ignition on. 2. With the scan tool, read DTCs and record on the repair order. 3. Record the related Freeze Frame data. 4. With the scan tool, erase DTCs. 5. Start the engine and allow it to idle. It maybe necessary to tests drive the vehicle and allow cam phasing to occur in order to reset the fault.

WARNING: When the engine is operating, do not stand in direct line with the . Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury. 6. With the scan tool, read DTCs.

Is the DTC active or pending?

Yes, • Go To 3 for vehicles without Variable Cam Timing

Yes, • Go To 2 for vehicles with Variable Cam Timing

No • Perform the INTERMITTENT CONDITION diagnostic procedure. (Refer to 28 - DTC-Based Diagnostics/ MODULE, Powertrain Control (PCM) - Standard Procedure).

2. CAMSHAFT POSITION SOLENOID CLEANING 1. With the scan tool perform the Exhaust Phaser 1 Cleaning function. 2. With the scan tool, erase DTCs. 3. Start the engine and allow it to idle. It maybe necessary to tests drive the vehicle and allow cam phasing to occur in order to reset the fault.

2 4. With the scan tool read DTCs.

Did the DTC return?

Yes • Go To 3

No • Perform the INTERMITTENT DTC diagnostic procedure. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

3. CHECK THE ENGINE OIL LEVEL AND CONDITION

NOTE: The following items should be checked before continuing with this procedure. Failure to do so may lead to misdiagnosis. • ENGINE MECHANICAL TOLERANCES OUT OF SPECIFICATION • ENGINE OIL PRESSURE OUT OF SPECIFICATION • LOW ENGINE OIL LEVEL • INCORRECT ENGINE OIL FILTER (DOES NOT MEET OEM SPECIFICATIONS) • DETERIORATED OR DIRTY OIL • CONTAMINATED ENGINE OIL • INCORRECT ENGINE OIL VISCOSITY • AERATED ENGINE OIL 1. If any of the above conditions are found, repair as necessary.

Were any of the above conditions present?

Yes • Repair the engine oiling or mechanical condition (i.e. improper oil drain back, , damaged oil , pick-up tube or seal, etc.). • Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

No • Go To 4

4. CHECK THE ENGINE OIL PRESSURE AND ENGINE MECHANICAL CONDITION 1. Turn the engine off. 2. Install an oil pressure gauge on the engine. 3. Start the engine and allow it to idle. 4. Monitor the engine oil pressure reading on the gauge.

Is the oil pressure reading steady and above the engine specifications?

Yes • Go To 5

No • Repair the engine oiling or mechanical condition (i.e. low engine oil, incorrect engine oil viscosity, contaminated or deteriorating engine oil, improper oil drain back or blocked screen in , oil sludge, damaged oil pump, pick-up tube or seal, incorrect engine oil filter (DOES NOT MEET OEM SPECIFICATIONS) etc.). • Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

3 5. REPLACE THE CAMSHAFT OIL CONTROL VALVE AND RETEST FOR DTC 1. Turn the ignition off. 2. Replace the Camshaft Oil Control Valve in accordance with the Service Information. The “Cam/Crank Relearn” Procedure must be performed every time there has been a repair/replacement made to a CMP Sensor and/or CKP Sensor, , , timing chain or gears. Failure to do so can cause a misfire fault to set. With the scan tool, perform the “Cam/Crank Relearn” Procedure. 3. Connect the Camshaft Oil Control Valve harness connector. 4. Turn the ignition on. 5. With the scan tool, erase DTCs. 6. Using the recorded Freeze Frame data and the When Monitored conditions, operate the vehicle in the conditions that set the DTC. 7. With the scan tool, read DTCs.

Did the DTC return?

Yes • Go To 6

No • Replacing the Camshaft Oil Control Valve repaired the fault. • Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

6. CHECK THE ENGINE TIMING ALIGNMENT 1. Check for proper alignment of the timing chain and sprocket in accordance with the Service Information. Also check the Cam Sensor Target Wheel, Timing Chain Tensioner and Guide for faulty or broken components.

Were any issue found with the timing alignment or components?

Yes • Perform the appropriate repair in accordance with the Service Information. The “Cam/Crank Relearn” Procedure must be performed every time there has been a repair/replacement made to a CMP Sensor and/or CKP Sensor, flywheel, valvetrain, timing chain or gears. Failure to do so can cause a misfire fault to set. With the scan tool, perform the “Cam/Crank Relearn” Procedure. • Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

No • The failure is caused by a lack of oil pressure in the Cylinder Head or a faulty Cam Phaser assembly. Perform the appropriate repair in accordance with the Service Information. The “Cam/Crank Relearn” Procedure must be performed every time there has been a repair/replacement made to a CMP Sensor and/or CKP Sensor, Flywheel, valvetrain, timing chain or gears. Failure to do so can cause a misfire fault to set. With the scan tool, perform the “Cam/Crank Relearn” Procedure. • Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

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