SFI SYSTEM, Diagnostic DTC:P0335, P0339
| DTC Code | DTC Name |
|---|---|
| P0335 | Crankshaft Position Sensor "A" Circuit |
| P0339 | Crankshaft Position Sensor "A" Circuit Intermittent |
DESCRIPTION
The crankshaft position sensor system consists of a crank angle sensor plate and a pickup coil.
The sensor plate has 34 teeth and is installed on the crankshaft. The pickup coil is made of wound copper wire, an iron core and magnet. The crank angle sensor plate rotates and, as each tooth passes by the pickup coil, a pulse signal is created. The pickup coil generates 34 signals per crankshaft revolution. Based on these signals, the ECM calculates the crankshaft position and engine speed. Using these calculations, the fuel injection and ignition timing are controlled.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0335 | One of the following conditions is met (1 trip detection logic):
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| P0339 | All of the following conditions are met (1 trip detection logic): (a) The engine speed is 1000 rpm or higher. (b) No crankshaft position sensor signal for 0.05 seconds or more. (c) 3 seconds or more have elapsed since the starter signal switched from on to off. |
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Reference: Inspection using an oscilloscope.
Tech Tips
Grounding failure of the shielded wire may cause noise in the waveforms.
ECM Terminal Name Between NE+ and NE- Tester Range 5 V/DIV., 20 ms./DIV. Condition Idling
MONITOR DESCRIPTION
If there is no signal from the crankshaft position sensor despite the crankshaft rotating, the ECM interprets this as a malfunction of the sensor.
MONITOR STRATEGY
| Related DTCs | P0335: Crankshaft position sensor range check/rationality P0335: Crankshaft position sensor verify pulse input |
| Required Sensors/Components (Main) | Crankshaft position sensor |
| Required Sensors/Components (Related) | Camshaft position sensor |
| Frequency of Operation | Continuous |
| Duration | -: Verify pulse input case 1 4.7 seconds: Verify pulse input case 2 0.016 seconds: Range check/rationality |
| MIL Operation | Immediate |
| Sequence of Operation | None |
TYPICAL ENABLING CONDITIONS
| Monitor runs whenever the following DTCs are not stored | None |
| All of the following conditions are met | - |
| Ignition switch | ON |
| Time after starter off to on | 3 seconds or more |
| Number of camshaft position sensor signal pulses | 6 times |
| Battery voltage | 7 V or higher |
| Minimum battery voltage while starter on | Less than 11 V |
| Camshaft position sensor circuit fail | Not detected |
| All of the following conditions are met | - |
| Starter | Off |
| Engine speed (Top dead center) | 600 rpm or higher |
| Engine speed (30°CA) | 600 rpm or higher |
| Time after starter on to off | 3 seconds or more |
| Both of the following conditions are met | - |
| Starter | On |
| Minimum battery voltage while starter on | Less than 11 V |
TYPICAL MALFUNCTION THRESHOLDS
| Number of crankshaft position sensor signal pulses | 132 times or less, or 174 times or more |
| Engine speed signal | No signal |
COMPONENT OPERATING RANGE
| Crankshaft position sensor |
|
CONFIRMATION DRIVING PATTERN
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Connect the Techstream to the DLC3.
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Turn the ignition switch to ON and turn the Techstream on.
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Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
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Turn the ignition switch off and wait for at least 30 seconds.
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Turn the ignition switch to ON and turn the Techstream on.
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Start the engine.
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Idle the engine for 20 seconds or more [A].
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Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
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Read the pending DTCs.
Tech Tips
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If a pending DTC is output, the system is malfunctioning.
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If a pending DTC is not output, perform the following procedure.
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Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
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Input the DTC: P0335 or P0339.
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Check the DTC judgment result.
Techstream Display Description NORMAL -
DTC judgment completed
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System normal
ABNORMAL -
DTC judgment completed
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System abnormal
INCOMPLETE -
DTC judgment not completed
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Perform driving pattern after confirming DTC enabling conditions
N/A -
Unable to perform DTC judgment
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Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
Tech Tips
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If the judgment result shows NORMAL, the system is normal.
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If the judgment result shows ABNORMAL, the system has a malfunction.
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If the judgment result shows INCOMPLETE or N/A, perform steps [A] and [B] again.
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If no pending DTC is output, perform a universal trip and check for permanent DTCs Click here.
Tech Tips
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If a permanent DTC is output, the system is malfunctioning.
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If no permanent DTC is output, the system is normal.
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WIRING DIAGRAM
INSPECTION PROCEDURE
Tech Tips
After performing the inspection procedure for the crankshaft position sensor, if DTC P0335 is output again, check the following items related to the camshaft position sensor.
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Installation condition of the camshaft position sensor
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Installation condition of the camshaft
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Connection of the camshaft position sensor connector
Tech Tips
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If no problem is found by this diagnostic troubleshooting procedure, check for problems by referring to the engine mechanical section.
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The engine speed can be checked by using the Techstream. To perform the check, follow the procedures below:
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Connect the Techstream to the DLC3.
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Start the engine.
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Turn the Techstream on.
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Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Engine Speed.
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The engine speed may be indicated as zero despite the engine running normally. This is caused by a lack of NE signals from the crankshaft position sensor. Alternatively, the engine speed may be indicated as lower than the actual engine speed if the crankshaft position sensor output voltage is insufficient.
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Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
PROCEDURE
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READ VALUE USING TECHSTREAM (ENGINE SPEED)
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Connect the Techstream to the DLC3.
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Turn the ignition switch to ON.
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Turn the Techstream on.
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Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Engine Speed.
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Start the engine.
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Read the values displayed on the Techstream while the engine is running.
Standard Correct values are displayed. Tech Tips
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To check the engine speed change, display the graph on the Techstream.
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If the engine does not start, check the engine speed while cranking.
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If the engine speed indicated on the Techstream remains at zero (0), there may be an open or short in the crankshaft position sensor circuit.
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NG 
INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE) Click here
OK 
CHECK FOR INTERMITTENT PROBLEMS Click here
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INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE)
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Inspect the crankshaft position sensor Click here.
NG 
REPLACE CRANKSHAFT POSITION SENSOR Click here
OK 
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CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)
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Disconnect the crankshaft position sensor connector.
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Disconnect the ECM connector.
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Measure the resistance according to the value(s) in the table below.
Standard Resistance Tester Connection Condition Specified Condition E72-1 - E26-76 (NE+) Always Below 1 Ω E72-2 - E26-109 (NE-) Always Below 1 Ω E72-1 or E26-76 (NE+) - Body ground Always 10 kΩ or higher E72-2 or E26-109 (NE-) - Body ground Always 10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
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CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)
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Check the crankshaft position sensor installation.
OK Crankshaft position sensor is installed correctly.
NG
SECURELY REINSTALL CRANKSHAFT POSITION SENSOR Click here
OK
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INSPECT CRANKSHAFT (TEETH OF CRANK ANGLE SENSOR PLATE)
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Inspect the teeth of the crank angle sensor plate.
OK Crank angle sensor plate does not have any cracks or deformation.
NG
REPLACE CRANKSHAFT Click here
OK
REPLACE ECM Click here
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