P0335

DTC Code	DTC Name
P0335	Crankshaft Position Sensor "A" Circuit

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 sensor plate rotates and, as each tooth passes by the pickup coil, a pulse signal is created. The pickup coil generates 34 signals per engine rotation. 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 condition is met (1 trip detection logic): No crankshaft position sensor signal to ECM while cranking No crankshaft position sensor signal to ECM while engine running Missing crankshaft position sensor signal despite camshaft position sensor signal inputs normal after engine cranked	Open or short in crankshaft position sensor circuit Crankshaft position sensor Crankshaft (crank angle sensor plate) ECM

DTC No.

DTC Detection Condition

Trouble Area

P0335

One of the following condition is met

(1 trip detection logic):

No crankshaft position sensor signal to ECM while cranking
No crankshaft position sensor signal to ECM while engine running
Missing crankshaft position sensor signal despite camshaft position sensor signal inputs normal after engine cranked

Open or short in crankshaft position sensor circuit
Crankshaft position sensor
Crankshaft (crank angle sensor plate)
ECM


*a	VV1, VV2 and NE Signal Waveforms
*b	5 V/DIV.
*c	20 ms./DIV.

Reference: Inspection using an oscilloscope

Tech Tips

The correct waveform is as shown.
VV1+ and VV2+ stand for the 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

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

MONITOR DESCRIPTION

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

If the malfunction is not repaired successfully, a DTC is set 10 seconds after the engine is next started.

MONITOR STRATEGY

Required Sensors/Components (Main)	Crankshaft position sensor
Required Sensors/Components (Related)	VVT sensor
Frequency of Operation	Continuous

COMPONENT OPERATING RANGE

Crankshaft position sensor

Crankshaft position sensor output voltage fluctuates while crankshaft is revolving
34 crankshaft position sensor signals per crankshaft revolution

CONFIRMATION DRIVING PATTERN

Connect the GTS to the DLC3.
Turn the power switch on (IG) and turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) Click here.
Turn the power switch off and wait for at least 30 seconds.
Turn the power switch on (IG) and turn the GTS on.
Put the engine in inspection mode (maintenance mode) Click here.
Start the engine.
Idle the engine for 20 seconds or more [A].
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.
Read Pending DTCs.
Tech Tips
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
Input the DTC: P0335.

Check the DTC judgment result.

GTS Display	Description
NORMAL	DTC judgment completed System normal
ABNORMAL	DTC judgment completed System abnormal
INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit

Tech Tips

If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.
If the judgment result shows INCOMPLETE or N/A, perform steps again.

WIRING DIAGRAM


*a	Crankshaft Position Sensor
*b	Shielded

CAUTION / NOTICE / HINT

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 VVT 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 GTS. Follow the procedure below:

Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Put the engine in inspection mode (maintenance mode) Click here.
Start the engine.
Enter the following menus: Powertrain / Engine and ECT / Data List / 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 GTS. 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 GTS (ENGINE SPEED)
1. Connect the GTS to the DLC3.
2. Turn the power switch on (IG).
3. Turn the GTS on.
4. Put the engine in inspection mode (maintenance mode) Click here.
5. Start the engine.
6. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed.
7. 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 zero (0), there may be an open or short in the crankshaft position sensor circuit.
OK
CHECK FOR INTERMITTENT PROBLEMS Click here

NG
INSPECT CRANKSHAFT POSITION SENSOR
1. Inspect the crankshaft position sensor Click here.
NG
REPLACE CRANKSHAFT POSITION SENSOR Click here

OK

Standard
Correct values are displayed.

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

Tester Connection	Condition	Specified Condition
F5-76 (NE+) - F21-1	Always	Below 1 Ω
F5-109 (NE-) - F21-2	Always	Below 1 Ω
F5-76 (NE+) or F21-1 - Body ground	Always	10 kΩ or higher
F5-109 (NE-) or F21-2 - Body ground	Always	10 kΩ or higher

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)
1. *1 Clearance
  
  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)
1. Check the teeth of the crank angle sensor plate.
  
  OK
  
  Crank angle sensor plate does not have any cracks or deformation.
OK
REPLACE ECM Click here

NG
REPLACE CRANKSHAFT Click here

SFI SYSTEM, Diagnostic DTC:P0335