Dtc P0335 Crankshaft Position Sensor A Circuit

Engine Hybrid System. Yaris. Ncp93, 131
1Nz-Fe Engine Control. Yaris. Ncp93, 131

DESCRIPTION

MONITOR DESCRIPTION

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

COMPONENT OPERATING RANGE

CONFIRMATION DRIVING PATTERN

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING TECHSTREAM (ENGINE SPEED)

INSPECT CRANKSHAFT POSITION SENSOR

CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)

CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)

INSPECT CRANKSHAFT (TEETH OF SENSOR PLATE)

REPLACE CRANKSHAFT POSITION SENSOR

CHECK WHETHER DTC OUTPUT RECURS (DTC P0335 OR P0339)

DTC P0335 Crankshaft Position Sensor "A" Circuit

DTC P0339 Crankshaft Position Sensor "A" Circuit Intermittent


DESCRIPTION

The Crankshaft Position (CKP) sensor system consists of a CKP 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 engine revolution. Based on these signals, the ECM calculates the crankshaft position and engine RPM. Using these calculations, the fuel injection time and ignition timing are controlled.

DTC No.
DTC Detection Condition
Trouble Area
P0335
Either of following conditions is met when camshaft position sensor fail not detected:
(1 trip detection logic)
  1. Missing Crankshaft Position (CKP) sensor signal despite camshaft position sensor signal inputs normal after engine cranked
  2. No CKP sensor signal to ECM while engine running
  1. Open or short in CKP sensor circuit
  2. CKP sensor
  3. CKP sensor plate (Crankshaft)
  4. ECM
P0339
Under conditions (a), (b) and (c), no CKP 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
  1. Open or short in CKP sensor circuit
  2. CKP sensor
  3. CKP sensor plate (Crankshaft)
  4. ECM

  1. Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan). Dtc P0335 Crankshaft Position Sensor A Circuit
    Reference: Inspection using an oscilloscope.
    HINT:
    1. The correct waveform is as shown.
    2. G2 stands for the Camshaft Position (CMP) sensor signal, and NE+ stands for the CKP sensor signal.
    3. Grounding failure of the shielded wire may causes noise in waveforms.
    Item
    		Content
    Terminals
    		CH1: G2+ - NE-
    CH2: NE+ - NE-
    Equipment Settings
    		5 V/DIV
    20 msec./DIV
    Conditions
    		Cranking or idling

MONITOR DESCRIPTION

If there is no signal from the CKP sensor despite the engine revolving, the ECM interprets this as a malfunction of the sensor.
If the malfunction is not repaired successfully, a DTC is stored 10 seconds after the engine is next started.

MONITOR STRATEGY


Related DTCs
P0335: CKP sensor range check or rationality
Required Sensors/Components (Main)
CKP sensor
Required Sensors/Components (Related)
CMP sensor
Frequency of Operation
Continuous
Duration
3 times
MIL Operation
Immediate
Sequence of Operation
None

TYPICAL ENABLING CONDITIONS


All:
Monitor runs whenever following DTCs not present
None

Case 1:
Time after starter OFF to ON
3 seconds or more
Number of CMP sensor signal pulses
6 times
Battery voltage
7 V or more
CMP sensor circuit fail (P0340)
Not detected
Ignition switch
ON

Case 2:
Starter
OFF
Engine speed (Top dead center)
600 rpm or less
Engine speed (30°CA)
600 rpm or less
Time after starter from ON to OFF
3 seconds or more

TYPICAL MALFUNCTION THRESHOLDS


Case 1:
Number of CKP sensor signal pulses
87 or less, and 220 or more

Case 2:
Engine speed signal
No signal

COMPONENT OPERATING RANGE


CKP sensor
  1. CKP sensor output voltage fluctuates while crankshaft revolving
  2. 34 CKP sensor signals per crankshaft revolution

CONFIRMATION DRIVING PATTERN

  1. Connect the Techstream to the DLC3.
  2. Turn the ignition switch to ON and turn the Techstream on.
  3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
  4. Turn the ignition switch off and wait for at least 30 seconds.
  5. Turn the ignition switch to ON and turn the Techstream on.
  6. Start the engine.
  7. Idle the engine for 20 seconds or more [A].
  8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
  9. Read pending DTCs.
    HINT:
    1. If a pending DTC is output, the system is malfunctioning.
    2. If a pending DTC is not output, perform the following procedure.
  10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  11. Input the DTC: P0335 or P0339.
  12. Check the DTC judgment result.

    Techstream Display
    		Description
    NORMAL
    1. DTC judgment completed
    2. System normal
    ABNORMAL
    1. DTC judgment completed
    2. System abnormal
    INCOMPLETE
    1. DTC judgment not completed
    2. Perform driving pattern after confirming DTC enabling conditions
    N/A
    1. Unable to perform DTC judgment
    2. Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
    HINT:
    1. If the judgment result shows NORMAL, the system is normal.
    2. If the judgment result shows ABNORMAL, the system has a malfunction.
    3. If the judgment result shows INCOMPLETE or N/A, perform steps [A] through [B] again.
  13. If no pending DTC is output, perform a universal trip and check for permanent DTCs (YARIS_NCP93 RM000000PDK0QGX.html).
    HINT:
    1. If a permanent DTC is output, the system is malfunctioning.
    2. If no permanent DTC is output, the system is normal.

WIRING DIAGRAM


Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan). Dtc P0335 Crankshaft Position Sensor A Circuit


INSPECTION PROCEDURE

HINT:
  1. 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.
    1. Installation condition of the camshaft position sensor.
    2. Installation condition of the camshaft.
    3. Connection of the camshaft position sensor connector.
  2. If no problem is found through this diagnostic troubleshooting procedure, troubleshoot the engine mechanical systems.
  3. Check the engine speed. The engine speed can be checked by using a Techstream. To check, follow the operation below:
    1. Connect the Techstream to the DLC3.
    2. Start the engine.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed.
    1. The engine speed may be indicated as zero despite the engine revolving normally. This is caused by a lack of NE signals from the Crankshaft Position (CKP) sensor. Alternatively, the engine speed may be indicated as lower than the actual engine speed, if the CKP sensor output voltage is insufficient.
  4. 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.
1.READ VALUE USING TECHSTREAM (ENGINE SPEED)

  1. Connect a Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed.

  1. Start the engine.

  1. Read the values displayed on the Techstream while the engine is running.

    OK:
    Correct values are displayed.
    HINT:
    1. To check the engine speed change, display the graph on the Techstream.
    2. If the engine does not start, check the engine speed while cranking.
    3. If the engine speed indicated on the Techstream remains zero (0), there may be an open or short in the Crankshaft Position (CKP) sensor circuit.


NG
Go to step 2
OK

CHECK FOR INTERMITTENT PROBLEMS (YARIS_NCP93 RM000000PDQ0NOX.html)

2.INSPECT CRANKSHAFT POSITION SENSOR

  1. Inspect the crankshaft position sensor (YARIS_NCP93 RM000001DBN01PX.html).



NG
REPLACE CRANKSHAFT POSITION SENSOR (YARIS_NCP93 RM000001DBP00YX.html)
OK


3.CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)
Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan). Dtc P0335 Crankshaft Position Sensor A Circuit

  1. Disconnect the C2 CKP sensor connector.

  1. Disconnect the C20 ECM connector.

  1. Check the resistance.

    Standard resistance (Check for open):
    Tester Connections
    		Specified Conditions
    NE+ (C2-1) - NE+ (C20-122)
    		Below 1 Ω
    NE- (C2-2) - NE- (C20-121)
    Standard resistance (Check for short):
    Tester Connections
    		Specified Conditions
    NE+ (C2-1) or NE+ (C20-122) - Body ground
    		10 kΩ or higher
    NE- (C2-2) or NE- (C20-121) - Body ground

  1. Reconnect the ECM connector.

  1. Reconnect the CKP sensor connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)
Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan). Dtc P0335 Crankshaft Position Sensor A Circuit

  1. Check the CKP sensor installation.

    OK:
    Sensor is installed correctly.


NG
SECURELY REINSTALL SENSOR (YARIS_NCP93 RM000001DBM00YX.html)
OK


5.INSPECT CRANKSHAFT (TEETH OF SENSOR PLATE)

  1. Check the teeth of the sensor plate.

    OK:
    Sensor plate does not have any cracks or deformation.


NG
REPLACE CRANKSHAFT (YARIS_NCP93 RM000001DFR029X.html)
OK


6.REPLACE CRANKSHAFT POSITION SENSOR

  1. Replace the crankshaft position sensor (YARIS_NCP93 RM000001DBP00YX.html).


NEXT


7.CHECK WHETHER DTC OUTPUT RECURS (DTC P0335 OR P0339)

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Clear DTCs (YARIS_NCP93 RM000000PDK0QGX.html).

  1. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

  1. Read DTCs.

    Result
    Display (DTC Output)
    		Proceed To
    No output
    		A
    P0335 or P0339
    		B
HINT:
If the engine does not start, replace the ECM.


B
REPLACE ECM (YARIS_NCP93 RM000001CN002AX.html)
A

END