PRE-RELEASE
DTC P0016 (LLU)
| DTC P0016 (LLU) |
| Diagnostic Instructions |
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Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
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Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
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Diagnostic Procedure Instructions
provides an overview of each diagnostic category.
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| DTC Descriptor |
DTC P0016 00
Crankshaft Position - Camshaft Position Not Plausible
| Circuit/System Description |
The camshaft position sensor correlates the crankshaft to camshaft position so that the engine control module (ECM) can determine which cylinder is ready to be fueled by an injector. As the camshaft rotates, the reluctor wheel interrupts a magnetic field produced by a magnet within the sensor and sends a signal to the ECM through the signal circuit. The camshaft position sensor circuits are directly connected to the ECM. The camshaft position sensor also determines which cylinder is misfiring. The camshaft position sensor circuits consist of the following:
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5 Volt Reference
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A low reference
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A camshaft position sensor signal
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| Conditions for Running the DTC |
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DTCs P0335 00 and P0336 00 are not set.
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The engine is running.
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This DTC runs continuously when the above conditions are met.
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| Conditions for Setting the DTC |
The ECM detects an incorrect camshaft position sensor signal for 2 s.
| Action Taken When the DTC Sets |
DTC P0016 00 is a Type D DTC.
| Conditions for Clearing the DTC |
DTC P0016 00 is a Type D DTC.
| Diagnostic Aids |
The following conditions can also set the DTC:
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A short to ground in a camshaft position solenoid valve control circuit can cause this DTC to set.
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Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, camshaft position sensor, crankshaft position sensor, or timing belt can cause this DTC to set.
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Crankshaft end play out of the range can cause this DTC to set.
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A crankshaft reluctor wheel that has moved in relationship to top dead center (TDC) can cause this DTC to set.
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| Reference Information |
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
Electrical Information Reference
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Circuit Testing
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Connector Repairs
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
| Circuit/System Verification |
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With the engine running, check the DTC Info with a scan tool. DTC P0016 00 should not be set.
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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.
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| Circuit/System Testing |
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Inspect the engine or review the service history of the vehicle for any recent repairs involving the timing belt, B23 Camshaft Position Sensor or B26 Crankshaft Position Sensor.
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Test for the following conditions:
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The correct installation of the B23 Camshaft Position Sensor
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The correct installation of the B26 Crankshaft Position Sensor
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A timing belt tensioner condition
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An incorrectly installed timing belt
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A timing belt that jumped teeth
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A crankshaft or camshaft reluctor wheel that has moved in relationship to top dead center (TDC) on the crankshaft
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If you find any of the above conditions, repair as necessary.
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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 are captured in the freeze fame/failure records data list.
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| Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
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Camshaft Position Sensor Replacement - Exhaust
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Crankshaft Position Sensor Replacement
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Timing Belt Replacement (LLU/A16LET)
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Timing Belt Tensioner Replacement
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Control Module References
for ECM replacement, setup, and programming
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