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 a magnet.
The sensor plate rotates and, as each tooth passes through 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 timing and ignition timing are controlled.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0335 | One of the following conditions is met (1 trip detection logic):
|
|
| P0339 | Under conditions (a), (b) and (c), no crankshaft position sensor signal to ECM for 0.05 seconds or more (1 trip detection logic): (a) Engine speed 1000 rpm or more (b) Starter signal off (c) 3 seconds or more have elapsed since starter signal switched from on to off |
|
-
Reference: Inspection using an oscilloscope
Tech Tips
-
The correct waveform is as shown.
-
VV1 and VV2 stand for the intake camshaft position (VVT) sensor signal, and NE stands for the crankshaft position sensor signal.
Item Content ECM Terminal Names Between VV1+ and VV1-, VV2+ and VV2-
Between NE+ and NE-
Tester Range 5 V/DIV.
20 ms./DIV.
Condition Idling with warm engine -
WIRING DIAGRAM
INSPECTION PROCEDURE
Tech Tips
-
After performing the inspection procedure for the crankshaft position sensor, if DTC P0335 and/or P0339 are output again, check the following items related to the camshaft position sensor.
-
Installation condition of the VVT sensor
-
Installation condition of the camshaft
-
Connection of the VVT sensor connector
-
If no problem is found through this diagnostic troubleshooting procedure, troubleshoot the engine mechanical system.
-
Check the engine speed. The engine speed can be checked using the intelligent tester. Follow the procedure below:
-
Connect the intelligent tester to the DLC3.
-
Start the engine.
-
Turn the tester on.
-
Enter the following menus: Powertrain / Engine / Data List / All Data / Engine Speed.
-
The engine speed may be indicated as zero despite the engine rotating 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.
-
Read freeze frame data using the intelligent tester. 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
-
READ VALUE USING INTELLIGENT TESTER (ENGINE SPEED)
-
Connect the intelligent tester to the DLC3.
-
Turn the engine switch on (IG).
-
Turn the tester on.
-
Enter the following menus: Powertrain / Engine / Data List / All Data / Engine Speed.
-
Start the engine.
-
Read the values displayed on the tester while the engine is running.
Standard Correct values are displayed. Tech Tips
-
To check the engine speed change, display the graph on the intelligent tester.
-
If the engine does not start, check the engine speed while cranking.
-
If the engine speed indicated on the intelligent tester remains zero (0), there may be an open or short in the crankshaft position sensor circuit.
-
NG 
INSPECT CRANKSHAFT POSITION SENSOR Click here
OK 
CHECK FOR INTERMITTENT PROBLEMS Click here
-
-
INSPECT CRANKSHAFT POSITION SENSOR
-
Text in Illustration *1 Component without harness connected
(Crankshaft Position Sensor)
Disconnect the crankshaft position sensor connector.
-
Measure the resistance according to the value(s) in the table below.
Standard Resistance Tester Connection Condition Specified Condition 1 - 2 Cold 1630 to 2740 Ω 1 - 2 Hot 2065 to 3225 Ω Note
Terms "cold" and "hot" refer to the temperature of the coils. "Cold" means approximately -10 to 50°C (14 to 122°F). "Hot" means approximately 50 to 100°C (122 to 212°F).
-
Reconnect the crankshaft position sensor connector.
NG 
REPLACE CRANKSHAFT POSITION SENSOR Click here
OK 
-
-
CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)
-
Disconnect the crankshaft position sensor connector.
-
Disconnect the ECM connector.
-
Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open) Tester Connection Condition Specified Condition D21-1 - D1-110 (NE+) Always Below 1 Ω D21-2 - D1-111 (NE-) Always Below 1 Ω Standard Resistance (Check for Short) Tester Connection Condition Specified Condition D21-1 or D1-110 (NE+) - Body ground Always 10 kΩ or higher D21-2 or D1-111 (NE-) - Body ground Always 10 kΩ or higher Text in Illustration *1 Front view of wire harness connector
(to Crankshaft Position Sensor)
*2 Front view of wire harness connector
(to ECM)
-
Reconnect the ECM connector.
-
Reconnect the crankshaft position sensor connector.
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)
OK
-
-
CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)
-
Check the crankshaft position sensor installation condition.
OK Sensor is installed correctly.
NG
SECURELY REINSTALL CRANKSHAFT POSITION SENSOR Click here
OK
-
-
CHECK CRANKSHAFT (TEETH OF CRANK ANGLE SENSOR PLATE)
-
Check 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
-