ES–198 2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM

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DESCRIPTIONThe 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 windings, an iron core and magnet. The sensor plate rotates and as each tooth passes through the pickup coil, a pulse signal is created. The pickup coil generates 32 signals for each 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.

Reference: Inspect using an oscilloscope.The correct waveform is as shown.

MONITOR DESCRIPTIONIf there is no signal from the Crankshaft Position (CKP) sensor even though the engine is revolving, the ECM interprets this as a malfunction of the sensor.

DTC P0335 Crankshaft Position Sensor "A" Circuit

DTC P0339 Crankshaft Position Sensor "A" Circuit Inter-mittent

DTC No. DTC Detection Condition Trouble Area

P0335

• No CKP position sensor signal to ECM during cranking (1 trip detection logic)

• No CKP sensor signal to ECM with engine at 450 rpm or more (1 trip detection logic)

• Open or short in Crankshaft Position (CKP) sensor circuit

• Crankshaft Position (CKP) sensor• Signal plate (CKP sensor plate)• ECM

P0339

No CKP sensor signal to ECM is input for 0.05 seconds or more, and conditions (a), (b) and (c) are met:(a) 1,000 rpm or more(b) Starter is OFF(c) 3 seconds or more have elapsed after STA signal is switched from ON or OFF

• Open or short in CKP sensor circuit• CKP sensor• Signal plate (CKP sensor plate)• ECM

Tester Connection Specified Condition

VV1+ (E6-25) - VV1- (E6-24)

Correct waveform is as shownVV2+ (E6-18) - VV2- (E6-28)

G2+ (E6-19) - G2- (E6-29)

NE+ (E6-21) - NE- (E6-20)

VV1, VV2 and NE Signal Waveforms

2 V/DIV

20 msec./DIV (idling)

GroundVV1

GroundVV2

GroundNE

A131145E01

2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–199

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MONITOR STRATEGY

TYPICAL ENABLING CONDITIONSAll:

Case 1:

Case 2:

TYPICAL MALFUNCTION THRESHOLDSCase 1:

Case 2:

Related DTCs Crankshaft position sensor range check or rationality

Required Sensors/Components Crankshaft position (CKP) sensor

Required Sensors/Components -

Frequency of Operation Continuous

Duration Case 1: 3 timesCase 2: 0.016 second

MIL Operation Immediate

Sequence of Operation None

The monitor will run whenever these DTCs are not present None

Time after starter OFF to ON 0.3 seconds or more

Number of camshaft position sensor signal pulse 6 times

Battery voltage 7 V or more

Ignition switch ON

CMP sensor circuit fail Not detected

Starter OFF

Engine RPM 450 rpm or more

Time after starter from ON to OFF 3 seconds or more

Number of CKP sensor signal pulse 132 or less, or 174 or more

Engine speed signal No signal for 0.016 second

ES–200 2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM

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WIRING DIAGRAM

INSPECTION PROCEDUREHINT:• If no problem is found by this diagnostic troubleshooting procedure, troubleshoot the engine

mechanical system.• Check the engine speed. The engine speed can be checked by using the intelligent tester. To check,

follow the operation below:(a)Connect the intelligent tester to the DLC3 with CAN VIM.(b)Start the engine.(c)Turn the tester ON.(d)Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / ENGINE SPD.

• 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.

• 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 be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air/fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

ECM

E62

1

Camshaft Position Sensor

Camshaft Timing Pulley LH

Crankshaft Position Sensor Plate No. 1

C1

1

2

Crankshaft Position Sensor

(Shielded)

C4

W

B G2+19

E6 G2-29

E6 NE+21

E6 NE-20

E EJ28 J/C W-B

ED

W-B

L

Y

VCL-R E43

A152658E01

2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–201

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(a) Disconnect the C4 Crankshaft Position (CKP) sensor connector.

(b) Measure the resistance of the sensor.Standard resistance

HINT:In the above section, the 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).

(c) Reconnect the crankshaft position sensor connector.

NG

OK

(a) Disconnect the C4 crankshaft position sensor connector.(b) Disconnect the E6 ECM connector.(c) Measure the resistance between the wire harness side

connectors.Standard resistance

(d) Reconnect the CKP sensor connector.(e) Reconnect the ECM connector.

NG

OK

1 INSPECT CRANKSHAFT POSITION SENSOR

Component Side

Crankshaft Position Sensor

C4

A115704E02

Tester Connection Condition Specified Condition

1 - 2 Cold 1,630 to 2,740 Ω

1 - 2 Hot 2,065 to 3,225 Ω

REPLACE CRANKSHAFT POSITION SENSOR

2 CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)

Crankshaft Position Sensor

ECM Connector

Wire Harness Side:

C4

E6

NE+ NE-A137922E01

Tester Connection Specified Condition

Crankshaft position sensor (C4-1) - NE+ (E6-21)

Below 1 ΩCrankshaft position sensor (C4-2) -

NE- (E6-20)

Crankshaft position sensor (C4-1) or NE+ (E6-21) - Body ground

10 kΩ or higherCrankshaft position sensor (C4-2) or

NE- (E6-20) - Body ground

REPAIR OR REPLACE HARNESS OR CONNECTOR

ES–202 2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM

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(a) Check the sensor installation.OK:

Sensor is installed correctly.

NG

OK

(a) Remove the crankshaft position sensor plate (See page EM-18).

(b) Check the tooth of the signal plate.OK:

Sensor plate does not have any cracks or deformation.

NG

OK

3 CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)

OK NGBR03795E15

SECURELY REINSTALL SENSOR

4 CHECK CRANKSHAFT POSITION SENSOR PLATE (TOOTH OF PLATE)

REPLACE CRANKSHAFT POSITION SENSOR PLATE

REPLACE ECM