MotoLogic P0335, P0336 User Manual

1/27/2021 DTC P0335 or P0336 - 3.6L LLT • 2016 Buick Enclave - AWD • MotoLogic

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DTC P0335

DTC P0336

DTC P0335 or P0336 - 3.6L LLT

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

Crankshaft Position Sensor Circuit

Crankshaft Position Sensor Performance

Diagnostic Fault Information

Circuit/System Description

The crankshaft position sensor circuits consist of an engine control module (ECM) supplied 5 V reference circuit, low reference circuit, and
an output signal circuit. The crankshaft position sensor is an internally magnetic biased digital output integrated circuit sensing device. The
sensor detects magnetic flux changes of the teeth and slots of a 58-tooth reluctor wheel on the crankshaft. Each tooth on the reluctor
wheel is spaced at 60-tooth spacing, with 2 missing teeth for the reference gap. The crankshaft position sensor produces an ON/OFF DC
voltage of varying frequency, with 58 output pulses per crankshaft revolution. The frequency of the crankshaft position sensor output
depends on the velocity of the crankshaft. The crankshaft position sensor sends a digital signal, which represents an image of the
crankshaft reluctor wheel, to the ECM as each tooth on the wheel rotates past the crankshaft position sensor. The ECM uses each
crankshaft position signal pulse to determine crankshaft speed and decodes the crankshaft reluctor wheel reference gap to identify
crankshaft position. This information is then used to determine the optimum ignition and injection points of the engine. The ECM also uses
crankshaft position sensor output information to determine the camshaft relative position to the crankshaft, to control camshaft phasing,
and to detect cylinder misfire.

Conditions for Running the DTC

P0335 Condition 1

The starter is engaged and the engine control module detects camshaft position sensor pulses.

Or

Circuit Short to Ground

Open/High

Resistance Short to Voltage

Signal

Performance

5 V Reference

P057C, P0335,

P0651

P0335 P0651 P0336

Signal P0335, P0506 P0335 P0335 P0336

Low Reference — P0335 — P0336

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1/27/2021 DTC P0335 or P0336 - 3.6L LLT • 2016 Buick Enclave - AWD • MotoLogic

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DTCs P0101, P0102 and P0103 are not set.

And

The airflow into the engine is greater than 3 g/s.

Condition 2

DTC P0651 is not set.

The engine is running and the starter is not engaged.

Condition 3

DTCs P0365, P0366, P0641, and P0651 are not set.

The engine is running or the starter is engaged.

P0336 Condition 1

DTCs P0335 or P0651 are not set.

The airflow into the engine is greater than 3 g/s.

Engine speed is greater than 450 RPM.

Condition 2

DTC P0651 is not set.

The engine is running and the starter is not engaged.

Condition 3

The starter is engaged and the engine control module detects camshaft position sensor pulses.

Or

DTCs P0101, P0102, and P0103 are not set.

The airflow into the engine is greater than 3 g/s.

Condition 4

DTCs P0365, P0366, P0641, and P0651, are not set.

The engine is running or the starter is engaged.

The DTCs run continuously once the above conditions are met.

Conditions for Setting the DTC

P0335 Condition 1

The ECM does not detect a crankshaft position sensor pulse for greater than 4 s.

Condition 2

The ECM does not detect a crankshaft position sensor pulse for greater than 1.0 s.

Condition 3

The ECM does not detect a crankshaft position sensor pulse for 2 out of 10 engine revolutions.

P0336 Condition 1

The ECM detects that 10 or more crankshaft resynchronization have occurred within 10.0 s.

Condition 2

The ECM does not detect the synchronization gap on the reluctor wheel for greater than 0.4 s.

Condition 3

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