СИСТЕМА ECD, 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 Magneto Resistance Element (MRE) type sensor. The crank angle sensor plate has 34 teeth at 10° intervals (2 teeth are missing for detecting top dead center), and is installed on the crankshaft. The crankshaft position sensor generates 34 signals per crankshaft revolution. The ECM uses the NE signal to detect the crankshaft position and engine speed.

P0335
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Crank or start engine	Either of the following conditions is met (1 trip detection logic): No crankshaft position sensor signal to the ECM while cranking. No crankshaft position sensor signal to the ECM while engine running.	Crankshaft position sensor Crankshaft (crank angle sensor plate) ECM

P0339
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Engine running at 1000 rpm or more with vehicle stationary	Under conditions (a), (b) and (c), no crankshaft position sensor signal is sent to the ECM for 0.05 seconds or more (1 trip detection logic): (a) Engine speed is 1000 rpm or more. (b) Starter signal is off. (c) 3 seconds or more have elapsed since the starter signal switched from on to off.	Crankshaft position sensor Crankshaft (crank angle sensor plate) ECM

Related Data List
DTC No.	Data List
P0335 P0339	Engine Speed

Tech Tips

If DTC P0335 and/or P0339 is stored, the following symptoms may appear:

Difficulty starting
Misfire
Combustion noise
Black smoke
White smoke
Lack of power

Reference: Inspection using an oscilloscope.

The correct waveform is as shown.

ECM Terminal Name

Between G2+ and G2-

Between NE+ and NE-

Tester Range

2 V/DIV., 20 msec./DIV.

Condition

Idling with warm engine

MONITOR DESCRIPTION

If there is no signal from the crankshaft position sensor despite the crankshaft revolving, the ECM interprets this as a malfunction of the sensor.

INSPECTION PROCEDURE

Note

After replacing the ECM, the new ECM needs registration Click here and initialization Click here.

Tech Tips

If no problem is found by this diagnostic troubleshooting procedure, check for problems by referring to the engine mechanical section.
The engine speed can be checked by using the GTS. To perform the check, follow the procedures below:

Connect the GTS to the DLC3.
Start the engine.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Engine Speed.

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.

Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE

CHECK ENGINE

Check the engine cranking condition.

Result

Result	Proceed to
Cranking is OK.	A
Does not crank at all*	B

*: When the engine cannot crank, there may be a malfunction in the starter assembly.

GO TO PROBLEM SYMPTOMS TABLE (ENGINE DOES NOT CRANK (DOES NOT START)) Click here

READ VALUE USING GTS (ENGINE SPEED)
1. Connect the GTS to the DLC3.
2. Turn the ignition switch to ON and turn the GTS on.
3. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Engine Speed.
4. Start the engine.
5. Read the values displayed on the GTS while the engine is running.
  
  Standard
  
  Correct values are displayed.
  Tech Tips
  - To check the engine speed change, display the graph on the GTS.
  - If the engine does not start, check the engine speed while cranking.
  - If the engine speed indicated on the GTS remains at zero (0), there may be an open or short in the crankshaft position sensor circuit.
NG
CHECK CRANKSHAFT POSITION SENSOR (SENSOR INSTALLATION) Click here

OK

Standard
Correct values are displayed.

CHECK WHETHER DTC OUTPUT RECURS (DTC P0335 AND/OR P0339)

Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Clear the DTCs Click here.
Turn the engine switch off and wait for at least 30 seconds or more.
Start the engine.
Turn the GTS on.
Idle the engine for 20 seconds or more.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

Read the DTCs.

Result

Result	Proceed to
DTC P0335 and/or P0339 is output	A
DTC is not output	B

CHECK FOR INTERMITTENT PROBLEMS Click here

CHECK CRANKSHAFT POSITION SENSOR (SENSOR INSTALLATION)
1. Text in Illustration
  
  *a Clearance
  
  Check the crankshaft position sensor installation condition.
  
  OK
  
  Crankshaft position sensor is installed correctly.
NG
SECURELY REINSTALL CRANK POSITION SENSOR Click here

OK
INSPECT CRANKSHAFT (TEETH OF SENSOR PLATE)
1. Inspect the teeth of the crank angle sensor plate.
  
  OK
  
  Crank angle sensor plate does not have any cranks or deformation.
NG
REPLACE CRANKSHAFT Click here

OK
REPLACE CRANKSHAFT POSITION SENSOR
1. Replace the crankshaft position sensor Click here.
NEXT
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here
REPLACE CRANKSHAFT
1. Replace the crankshaft Click here.
NEXT
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here
SECURELY REINSTALL CRANK POSITION SENSOR
1. Securely reinstall the crankshaft position sensor Click here.
NEXT
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
1. Connect the GTS to the DLC3.
2. Turn the ignition switch to ON and turn the GTS on.
3. Clear the DTCs Click here.
4. Turn the ignition switch off for 30 seconds or more.
5. Start the engine and run it at 1000 rpm or higher for 5 seconds or more.
6. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
  
  OK
  
  DTC is not output again.
NG
REPLACE ECM Click here

OK

END