DTC P0335, P0336, or P0338 (LDK with Turbocharger)
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DTC P0335, P0336, or P0338 (LDK with Turbocharger)
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DTC P0335
Crankshaft Position Sensor Circuit
DTC P0336
Crankshaft Position Sensor Performance
DTC P0338
Crankshaft Position Sensor Circuit High Duty Cycle
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Diagnostic Fault Information
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Circuit
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Short to Ground
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Open/High Resistance
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Short to Voltage
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Signal Performance
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5 V Reference
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P0122, P0222, P0335, P0698
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P0335
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P0123, P0221, P0335, P0533, P0699, P2138
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P0336, P0697, P0698, P0699
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Crankshaft Position Sensor Signal
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P0335
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P0335
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P0335
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P0336
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Low Reference
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-
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P0335
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P0123, P0335, P0699, P2101, P2138
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P0336
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Circuit/System Description
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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 sequence the ignition timing and fuel injection events for the engine. The ECM also uses crankshaft position sensor output information to determine the camshaft relative position to the crankshaft, to detect cylinder misfire, and to control the camshaft position actuator if equipped.
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Conditions for Running the DTC
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The engine is cranking or operating.
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The ECM has detected greater than 12 camshaft revolutions.
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The DTCs run continuously once the above conditions are met for greater than 5 s.
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Conditions for Setting the DTC
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P0335
The ECM does not detect a signal from the crankshaft position sensor. OR, the ECM detects a crankshaft position signal with out reference pulse for more than 6 revolutions. Either condition exists for greater than 1 s.
P0336
The ECM re-syncs the engine position 2,600 or more times during an ignition cycle. OR, the ECM detects 28 or more interruptions in the engine speed signal during an ignition cycle. Either condition exists for greater than 1 s.
P0338
The ECM detects a difference of more than 250 teeth between reference gap position pulses for 4 consecutive crankshaft revolutions in which the same number of pulses are detected each crankshaft revolution or a cumulative of 50 s.
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Action Taken When the DTC Sets
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DTCs P0335, P0336, and P0338 are Type B DTCs.
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Conditions for Clearing the DTC
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DTCs P0335, P0336, and P0338 are Type B DTCs.
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The ECM uses the camshaft position sensors to determine engine speed and position when there is a crankshaft position sensor condition.
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The engine will operate with a crankshaft position sensor condition only if the ECM has stored the learned reference position of the camshafts in memory. With a crankshaft position sensor condition the engine will go into a limp home mode after a restart. The ECM then calculates engine speed from one of the camshaft position sensors.
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An intermittent condition in the camshaft position sensor circuits can cause a crankshaft position DTC to set. Inspect the camshaft position sensor, harness connections, and related wiring, if you suspect this condition.
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Test the current out-put of the signal circuit if you suspect high resistance in the circuit. The current out-put should be greater than 1 mA when measured on the 400 mA scale.
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A low fuel condition may set DTC P0336. If the fuel tank is allowed to run dry and numerous attempts are made to restart the engine after the initial stall, DTC P0336 may set. Any other condition that results in fuel starvation where unsuccessful start attempts are made may set DTC P0336.
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Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References
for scan tool information
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Circuit/System Verification
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1.
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Ignition ON, check the diagnostic trouble code (DTC) information with a scan tool. DTC P0697, P0698 or P0699 are not set.
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3.
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Clear the DTC Info with a scan tool. Attempt to start the engine. Observe the DTC Info with a scan tool. DTCs P0335, P0336 or P0338 should not set.
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4.
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Observe the scan tool Crankshaft Position Resync Counter parameter. The parameter should always display zero. Move the related harnesses/connectors of the B26 crankshaft position sensor while observing the parameter. Verify the engine does not stumble or stall, and the parameter does not increment.
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5.
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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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1.
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Ignition OFF, disconnect the harness connector at the B26 crankshaft position sensor.
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2.
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This can take up to 2 minutes with the ignition OFF and all vehicle systems OFF. Test whether there is less than 1 Ω between the low reference circuit terminal 2 and ground.
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3.
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If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 ECM.
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4.
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Ignition ON, engine OFF, test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.
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5.
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If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 ECM.
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6.
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If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.
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7.
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Ignition ON, engine OFF, test for 4.8-5.2 V between the signal circuit terminal 3 and ground.
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8.
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If less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the K20 ECM.
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9.
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If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.
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10.
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Ignition OFF, connect a fused jumper wire to signal circuit terminal 3.
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11.
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Ignition ON, momentarily touch the other end of the fused jumper wire to the battery negative post repeatedly. The Crankshaft Position Active Counter and the Camshaft Position Sensor parameter should change.
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12.
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If the Crankshaft Position Active Counter and the Camshaft Position Sensor parameter change, test or replace the B26 crankshaft position sensor.
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13.
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If the Crankshaft Position Active Counter and the Camshaft Position Sensor parameter does not change, replace the K20 ECM.
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14.
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Ignition OFF, inspect the B26 crankshaft position sensor for correct installation.
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15.
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If the sensor is loose, inspect the sensor and the O-ring for damage. Replace as necessary.
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16.
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Inspect the engine for the following conditions:
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Crankshaft reluctor wheel for damage
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Timing chain, tensioner, and sprockets for wear or damage
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18.
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If all circuits and components test normal, test or replace the B26 crankshaft position sensor.
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Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
