2NZ-FE ENGINE CONTROL SFI SYSTEM P0335 Crankshaft Position Sensor "A" Circuit P0339 Crankshaft Position Sensor "A" Circuit Intermittent | Toyota Corolla/Altis NZE17/ZRE17 2017 Service Manual

DESCRIPTION

The crankshaft position sensor system consists of a crankshaft position sensor plate and a pickup coil.

The crankshaft position 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 crankshaft position 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 speed. Based on these signals, the ECM calculates the crankshaft position and engine speed. Using these calculations, the fuel injection duration and ignition timing are controlled.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P0335	Crankshaft Position Sensor "A" Circuit	When one Either of the following conditions (a) or (b) is met when camshaft position circuit fail is not detected (1 trip detection logic) : (a) No crankshaft position sensor signal to ECM while cranking (b) No crankshaft position sensor signal to ECM while engine speed 600 rpm or more	· Open or short in crankshaft position sensor circuit · Crankshaft position sensor · Crankshaft position sensor plate · ECM	Comes on	DTC stored
P0339	Crankshaft Position Sensor "A" Circuit Intermittent	Under conditions (a), (b) and (c), no crankshaft position sensor signal to ECM for 0.05 seconds or higher (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	· Open or short in crankshaft position sensor circuit · Crankshaft position sensor · Crankshaft position sensor plate · ECM	Does not come on	DTC stored

0.104,0.083 1.333,0.281 1.229,0.198 10 false 5 V/DIV. 0.146,0.688 1.375,0.885 1.229,0.198 10 false (G2+) 0.167,1.271 1.396,1.469 1.229,0.198 10 false CH2 0.135,1.448 1.365,1.646 1.229,0.198 10 false (NE+) 0.135,0.542 1.365,0.74 1.229,0.198 10 false CH1 2.792,0.594 3.229,0.823 0.438,0.229 10 false GND 2.781,1.396 3.219,1.625 0.438,0.229 10 false GND 1.208,1.896 2.063,2.125 0.854,0.229 10 false 20 ms./DIV.

Reference: Inspection using an oscilloscope.

HINT:: ·

The correct waveform is as shown.

·

Grounding failure of the shielded wire may cause a noisy waveform.

·

G2+ is camshaft position sensor signal, and NE+ is the crankshaft position sensor signal.

ECM Terminal Name	CH1: Between G2+ and NE- CH2: Between NE+ and NE-
Tester Range	5 V/DIV., 20 ms./DIV.
Condition	Idling with warm engine

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

Required sensors/Components (Main)	Crankshaft position sensor
Required sensors/Components (Related)	Camshaft position sensor
Frequency of operation	Continuous

COMPONENT OPERATING RANGE

Crankshaft position sensor

·

Crankshaft position sensor output voltage fluctuates while crankshaft revolving

·

34 crankshaft position sensor signals per crankshaft revolution

CONFIRMATION DRIVING PATTERN

1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON and turn the GTS on.

3.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

4.

Turn the ignition switch off and wait for at least 30 seconds.

5.

Turn the ignition switch to ON and turn the GTS on.

6.

Start the engine.

7.

Idle the engine for 20 seconds or more.

8.

Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

9.

Read the pending DTCs.

HINT:: ·

If a pending DTC is output, the system is malfunctioning.

·

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.

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 memory limit

HINT:: ·

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 the Confirmation Driving Pattern and check the DTC judgment result again.

WIRING DIAGRAM

1,2.063 4.667,2.26 3.667,0.198 10 false Camshaft Position Sensor 1,1.896 1.521,2.146 0.521,0.25 10 false B57 1.01,4.083 4.677,4.281 3.667,0.198 10 false Camshaft Position Sensor 1.021,3.917 1.542,4.167 0.521,0.25 10 false B15 2.208,0.75 2.729,1 0.521,0.25 10 false 1 2.219,1.396 2.74,1.646 0.521,0.25 10 false 2 2.208,2.771 2.729,3.021 0.521,0.25 10 false 1 2.219,3.406 2.74,3.656 0.521,0.25 10 false 2 3.615,1.875 4.135,2.125 0.521,0.25 10 false * 3.615,3.802 4.135,4.052 0.521,0.25 10 false * 5.552,0.76 6.073,1.01 0.521,0.25 10 false 99 5.469,2.76 5.99,3.01 0.521,0.25 10 false 122 5.479,3.396 6,3.646 0.521,0.25 10 false 121 5.802,0.76 6.323,1.01 0.521,0.25 10 false G2+ 5.802,2.76 6.323,3.01 0.521,0.25 10 false NE+ 5.802,3.406 6.323,3.656 0.521,0.25 10 false NE- 3.906,4.198 5.292,4.615 1.385,0.417 10 false *: Shielded 5.927,4.24 6.448,4.49 0.521,0.25 10 false B56 6.271,4.24 6.792,4.49 0.521,0.25 10 false ECM

CAUTION / NOTICE / HINT

HINT:: ·

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.

·

Installation condition of the camshaft position sensor

·

Installation condition of the camshaft

·

Connection of the camshaft position sensor connector

·

If no problem is found by this diagnostic troubleshooting procedure, check for problems by referring to the engine mechanical section.

·

Check the engine speed. The engine speed can be checked by using the GTS. To perform the check, follow the procedures below:

1.

Connect the GTS to the DLC3.

2.

Start the engine.

3.

Turn the GTS on.

4.

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

1.READ VALUE USING GTS (ENGINE SPEED)

a.

Connect the GTS to the DLC3.

b.

Turn the ignition switch to ON.

c.

Turn the GTS on.

d.

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

Powertrain > Engine and ECT > Data List

Tester Display
Engine Speed

50003 234 9

e.

Start the engine.

f.

Read the values displayed on the GTS while the engine is running.

OK:: Correct values are displayed.

HINT:: ·

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.

Result:

Proceed to
OK
NG

OK

CHECK FOR INTERMITTENT PROBLEMS

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>SFI SYSTEM>CHECK FOR INTERMITTENT PROBLEMS

NG

2.INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE)

a.

Inspect the crankshaft position sensor.

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>CRANKSHAFT POSITION SENSOR>INSPECTION

Result:

Proceed to
OK
NG

OK

3.CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)

NG

REPLACE CRANKSHAFT POSITION SENSOR

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>CRANKSHAFT POSITION SENSOR>REMOVAL

3.CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)

a.

Disconnect the crankshaft position sensor connector.

b.

Disconnect the ECM connector.

c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
B15-1 - B56-122 (NE+)	Always	Below 1 Ω
B15-2 - B56-121 (NE-)	Always	Below 1 Ω
B15-1 or B56-122 (NE+) - Body ground	Always	10 kΩ or higher
B15-2 or B56-121 (NE-) - Body ground	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

OK

4.CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)

2.208,1.583 2.5,1.844 0.292,0.26 10 false *a 0.469,1.781 0.781,1.979 0.313,0.198 10 false OK 2.667,1.781 2.979,1.979 0.313,0.198 10 false NG

*a

Clearance

a.

Check the crankshaft position sensor installation condition.

OK:: Crankshaft position sensor is installed correctly.

Result:

Proceed to
OK
NG

OK

5.INSPECT CRANKSHAFT (TEETH OF CRANKSHAFT POSITION SENSOR PLATE)

NG

SECURELY REINSTALL SENSOR

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>CRANKSHAFT POSITION SENSOR>INSTALLATION

5.INSPECT CRANKSHAFT (TEETH OF CRANKSHAFT POSITION SENSOR PLATE)

a.

Inspect the teeth of the crankshaft position sensor plate.

OK:: Crankshaft position sensor plate does not have any cracks or deformation.

Result:

Proceed to
OK
NG

OK

6.REPLACE CRANKSHAFT POSITION SENSOR

NG

REPLACE CRANKSHAFT (CRANKSHAFT POSITION SENSOR PLATE)

Click hereEngine / Hybrid System>2NZ-FE ENGINE MECHANICAL>ENGINE UNIT>DISASSEMBLY

6.REPLACE CRANKSHAFT POSITION SENSOR

a.

Replace the crankshaft position sensor.

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>CRANKSHAFT POSITION SENSOR>REMOVAL

Result:

Proceed to
NEXT

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

a.

Connect the GTS to the DLC3.

b.

Turn the ignition switch to ON.

c.

Turn the GTS on.

d.

Clear the DTCs.

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>SFI SYSTEM>DTC CHECK / CLEAR

Powertrain > Engine and ECT > Clear DTCs: 50002 234

e.

Start the engine.

f.

Turn the GTS on.

g.

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

h.

Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

i.

Read the DTCs.

Powertrain > Engine and ECT > Trouble Codes: 50001 234

Result:

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

HINT:: If the engine does not start, replace the ECM.

A

END

B

REPLACE ECM

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>ECM>REMOVAL