Toyota Corolla (2004+). Manual - part 63

05-166

DIAGNOSTICS

- SFI SYSTEM (April, 2003)

2

INSPECT KNOCK SENSOR

(a) Check the knock sensor installation.

Torque: 20 N m (204 kgf cm, 15 ft lbf)

A64029

NG TIGHTEN SENSOR

OK

3

CHECK HARNESS AND CONNECTOR(ECM - KNOCK SENSOR)

(a) Disconnect the E4 ECM connector.

(b) Measure the resistance between terminals of the E4 ECM

E4

connector.

Standard:

Tester Connection

Specified Condition

KNK1 (E4-1) - EKNK (E4-2)

120 to 280 KW at 20 _C (68 _F)

EKNK

(c)

Reconnect the ECM connector.

KNK1

NG Go to step 5

ECM Connector

A65745

OK

4

INSPECT ECM(KNK1 VOLTAGE)

(a) Disconnect the E4 ECM connector.

(b) Turn the ignition switch ON.

(c)

Measure the voltage between terminals of the E4 ECM

terminals.

Standard:

Tester Connection

Specified Condition

KNK1 (E4-1) - EKNK (E4-2)

4.5 to 5.5 V

EKNK (-)

KNK1(+)

(d) Reconnect the ECM connector.

ECM Connector

A84937

NG REPLACE ECM (See page 10-11)

OK

05-167

DIAGNOSTICS

- SFI SYSTEM (April, 2003)

CHECK FOR INTERMITTENT PROBLEMS (See page 05-41)

NOTICE:

Fault may be intermittent. Check harness and connectors carefully.

5

INSPECT KNOCK SENSOR

(a) Remove the K1 knock sensor.

Ohmmeter

(b) Measure the resistance between the terminals.

Standard:

Tester Connection

Specified Condition

KNK1 (K1-1) - EKNK (K1-2)

120 to 280 KW aKt 20 _C (68 _F)

(c)

Reinstall the knock sensor.

A65174

NG REPLACE KNOCK SENSOR

OK

REPAIR OR REPLACE HARNESS OR CONNECTOR

05-168

DIAGNOSTICS

- SFI SYSTEM (April, 2003)

052NO-11

DTC

P0335

CRANKSHAFT POSITION SENSOR ”A”

CIRCUIT

DTC

P0339

CRANKSHAFT POSITION SENSOR ”A”

CIRCUIT INTERMITTENT

CIRCUIT DESCRIPTION

The crankshaft position sensor (NE signal) consists of a magnet, iron core and pickup coil.

The NE signal plate (crankshaft position sensor plate) has 34 teeth and is installed on the crankshaft. The

NE signal sensor generates 34 signals for each engine revolution. This sensor monitors a plate (timing rotor)

located on the crankshaft timing pulley and is used by the ECM to detect crankshaft angle and engine speed

(RPM/NE). As the crankshaft timing pulley rotates through an engine revolution, this sensor communicates

the rotation of the NE signal plate as a pulse signal to the ECM. Based on the signal, the ECM controls fuel

injection time and ignition timing.

DTC No.

DTC Detection Condition

Trouble Area

No crankshaft position sensor signal to ECM during cranking

(2 trip detection logic)

P0335

No crankshaft position sensor signal to ECM with engine

speed 600 rpm or more (2 trip detection logic)

F Open or short in crankshaft position sensor circuit

In condition (a), (b) and (c), when no crankshaft position sen-

F Crankshaft position sensor

sor (NE+) signal is input for 0.05 seconds or more.

F Signal plate (crankshaft)

(a) Engine revolution 1,000 rpm or more

F ECM

P0339

(b) STA signal is OFF

(c) 3 seconds or more has lapsed after STA signal is switched

from ON to OFF.

Reference: Inspection using the oscilloscope.

HINT:

CH1

The correct waveform is as shown on the left.

GND

(G22+)

Item

Contents

CH1: G22+ - NE-

Terminal

CH2: NE+ - NE-

CH2

GND

Equipment Set

5V/Division, 20ms/Division

(NE+)

Condition

During cranking or idling

A84612

05-169

DIAGNOSTICS

-

SFI SYSTEM (April, 2003)

MONITOR DESCRIPTION

If there is no signal from the crankshaft sensor despite the engine revolving, the ECM interprets this as a

malfunction of the sensor.

MONITOR STRATEGY

Crankshaft position sensor range check or ratio-

Related DTCs

P0335

nality

Main sensors

Crankshaft position sensor

Required sensors/components

Related sensors

Engine speed sensor

Frequency of operation

Continuous

Duration

Case 1: 4.7 seconds, Case 2: 0.5 second

MIL operation

2 driving cycles

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

Specification

Item

Minimum

Maximum

The monitor will run whenever the follow-

See ”List of Disable a Monitor” (On page 05-25)

ing DTCs are not present

Case 1:

Starter

ON

Minimum battery voltage while starter ON

-

11 V

Case 2:

Engine speed

600 rpm

-

Starter

OFF

Time after starter ON to OFF

3 seconds

-

TYPICAL MALFUNCTION THRESHOLDS

Detection Criteria

Threshold

Case 1:

Engine speed signal

No signal for 4.7 seconds

Case 2:

Engine speed signal

No signal for 0.5 second

05-170

DIAGNOSTICS

- SFI SYSTEM (April, 2003)

WIRING DIAGRAM

ECM

C1

(Shielded)

Camshaft Position Sensor

26

1

B

G22+

E3

A

2

W

J3

Junction

C3

Connector

(Shielded)

Crankshaft Position Sensor

E

E

34

2

W

W

J2

J2

E3

NE-

27

1

B

NE+

E3

J5

A

J5

A

Junction

Connector

EB

J4

A

BR

A84876

INSPECTION PROCEDURE

HINT:

F

Perform the troubleshooting of DTC P0335 first. If no trouble is found, troubleshoot the engine me-

chanical systems.

F

Read freeze frame data using the hand−held tester or the OBD II scan tool. Freeze frame data records

the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determin-

ing whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio

was lean or rich, etc. at the time of the malfunction.

F

READ VALUE OF HAND-HELD TESTER OR OBD II SCAN TOOL

(a) Connect the hand-held tester or the OBD II scan tool to the DLC3.

(b) Start the engine and push the hand-held tester or the OBD II scan tool main switch ON.

(c) Select the item ”DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / ENGINE SPD”.

F

The engine speed can be confirmed in DATA LIST using the hand-held tester or OBD II scan tool. If

there is no NE signals from the crankshaft position sensor despite the engine revolving, the engine

speed will be indicated as zero. If voltage output of the crankshaft position sensor is insufficient, the

engine speed will be indicated as lower PRM (than the actual RPM).

05-171

DIAGNOSTICS

- SFI SYSTEM (April, 2003)

1

INSPECT CRANKSHAFT POSITION SENSOR(RESISTANCE)

(a) Disconnect the C43crankshaft position sensor connector.

Component Side:

(b) Measure the resistance between the terminals of the

C3

Crankshaft Position Sensor

crankshaft position sensor connector.

Standaed:

Tester Connection

Specified Condition

985 to 1,600 W at cold

1

- 2

1,265 to 1,890 W at hot

Front View

NOTICE:

A73303

”Cold” and ”Hot” shown above mean the temperature of

the coils themselves. ”Cold” is from -10

_C (14_F) to 50 _C

(122 _F) and ”Hot” is from 50

_C (122 _F) to 100 _C (212 _F).

(c)

Reconnect the crankshaft position sensor connector.

NG REPLACE CRANKSHAFT POSITION SENSOR

(See page 18-2)

OK

2

CHECK HARNESS AND CONNECTOR(CRANKSHAFT POSITION SENSOR - ECM)

(a) Disconnect the C3 crankshaft position sensor connector.

Wire Harness Side:

Crankshaft Position Sensor Connector

(b) Disconnect the E3 ECM connector.

C3

(c)

Check the resistance between the wire harness side con-

NE+

NE-

nectors.

Standard (Check for open):

Tester connection

Specified Condition

NE+ (C3-1) - NE+ (E3-27)

Below 1 W

NE- (C3-2) - NE- (E3-34)

Front View

A84567

Standard (Check for short):

Tester connection

Specified Condition

NE+ (C3-1) or NE+ (E3-27) - Body ground

10 kW or higher

NE- (C3-2) or NE- (E3-34) - Body ground

E3

(d) Reconnect the ECM connector.

(e) Reconnect the crankshaft position sensor connector.

NE+

NE-

ECM Connector

A65743

NG REPAIR OR REPLACE HARNESS OR

CONNECTOR

OK

05-172

DIAGNOSTICS

- SFI SYSTEM (April, 2003)

3

CHECK SENSOR INSTALLATION(CRANKSHAFT POSITION SENSOR)

(a) Check the crankshaft position sensor installation .

NG TIGHTEN SENSOR

OK

4

CHECK CRANKSHAFT POSITION SENSOR PLATE(TEETH OF SENSOR

PLATE(CRANKSHAFT))

(a) Check the teeth of the sensor plate.

NG REPLACE CRANKSHAFT POSITION SENSOR

PLATE (CRANKSHAFT)

OK

REPLACE ECM (See page 10-11)

05-173

DIAGNOSTICS

- SFI SYSTEM (April, 2003)

052NP-12

DTC

P0340

CAMSHAFT POSITION SENSOR ”A”

CIRCUIT (BANK 1 OR SINGLE SENSOR)

DTC

P0341

CAMSHAFT POSITION SENSOR ”A”

CIRCUIT RANGE/PERFORMANCE (BANK 1

OR SINGLE SENSOR)

CIRCUIT DESCRIPTION

The camshaft position sensor (G22+ signal) consists of a magnet, iron core and pickup coil.

The G22+ signal plate has 3 teeth on its outer circumference and is installed on the camshaft timing pulley.

When the camshafts rotate, the protrusion on the signal plate and the air gap on the pickup coil changes,

causing fluctuations in the magnetic field and generating an electromotive force in the pickup coil.

The NE+ signal plate (crankshaft timing pulley) has 34 teeth and is installed to the crankshaft. The NE+ signal

sensor generates 34 signals at every engine revolution. The ECM detects the crankshaft angle and the en-

gine revolution based on the NE+ signals, and the cylinder and the angle of the VVT based on the combina-

tion of the G22+ and NE+ signals.

DTC No.

DTC Detection Condition

Trouble Area

F No camshaft position sensor signal to ECM during cranking

(2 trip detection logic)

P0340

F No camshaft position sensor signal to ECM with engine

F Open or short in camshaft position sensor circuit

speed 600 rpm or more (1 trip detection logic)

F Camshaft position sensor

While crankshaft rotates twice, camshaft position sensor signal

F Camshaft timing pulley

is input to ECM 12 times or more (1 trip detection logic)

F Timing chain has jumped a tooth

P0341

F Hint:

F ECM

Under normal condition, the camshaft position sensor is input

into the ECM 3 times per 2 engine revolutions

Reference: Inspection using the oscilloscope.

HINT:

CH1

The correct waveform is as shown on the left.

(G22+)

GND

Item

Contents

CH1: G22+ - NE-

Terminal

CH2

CH2: NE+ - NE-

(NE+)

GND

Equipment Set

5V/DIV, 20ms/DIV

Condition

During cranking or idling

A84613

05-174

DIAGNOSTICS

- SFI SYSTEM (April, 2003)

MONITOR DESCRIPTION

If there is no signal from the camshaft position sensor despite the engine revolving, or if the rotation of the

camshaft and the crankshaft is not synchronized, the ECM interprets this as a malfunction of the sensor.

MONITOR STRATEGY

Camshaft position sensor (bank 1) range check

P0340

or rationality

Related DTCs

Camshaft position sensor (bank 1) range check

P0341

or rationality

Main sensors

Camshaft position sensor

Required sensors/components

Related sensors

Crankshaft position sensor, engine speed sensor

Frequency of operation

Continuous

Duration

5 seconds

P0340 case 2 (mis-aligned) and P0341: Immediately

MIL operation

P0340 case 1 (no signal): 2 driving cycles

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

Specification

Item

Minimum

Maximum

The monitor will run whenever the follow-

See ”List of Disable a Monitor” (On page 05-25)

ing DTCs are not present

P0340 Case 1 (No signal):

Starter

ON

Minimum battery voltage while starter ON

-

11 V

P0340 Case 2 (Mis-aligned):

Engine speed

600 rpm

-

Starter

OFF

P0341:

Engine speed

600 rpm

-

Time after restart

180_CA

-

TYPICAL MALFUNCTION THRESHOLDS

Detection Criteria

Threshold

P0340 Case 1 (No signal):

Camshaft position sensor signal

No signal

P0340 Case 2 (Mis-aligned):

Crankshaft/camshaft alignment is mis-aligned (judged by comparing the crankshaft position to the camshaft position)

Camshaft position sensor signal: No input in appropriate timing.

P0341:

Crankshaft/Camshaft alignment

Mis-aligned

Camshaft position sensor count

12 or more / 720_CA (= Engine 2 revolutions)

COMPONENT OPERATING RANGE

Parameter

Standard Value

Camshaft position sensor signal input during every 720_CA

3

05-175

DIAGNOSTICS

- SFI SYSTEM (April, 2003)

WIRING DIAGRAM

Refer to DTC P0335 on page 05-168.

INSPECTION PROCEDURE

HINT:

Read freeze frame data using the hand−held tester or the OBD II scan tool. Freeze frame data records the

engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether

the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich,

etc. at the time of the malfunction.

1

INSPECT CAMSHAFT POSITION SENSOR(RESISTANCE)

(a) Measure the resistance between the terminals of cam-

Component Side:

shaft position sensor connector.

C1

Standard:

Tester Connection

Specified Condition

1,630 to 2,740 W at cold

1

- 2

2,065 to 3,225 W at hot

NOTICE:

”Cold” and ”Hot” shown above mean the temperature of

Camshaft Position Sensor

A73303

the coils themselves. ”Cold” is from -10

_C (14_F) to 50 _C

(122 _F) and ”Hot” is from 50

_C (122 _F) to 100 _C (212 _F).

NG REPLACE CAMSHAFT POSITION SENSOR

OK

2

CHECK HARNESS AND CONNECTOR(CAMSHAFT POSITION SENSOR - ECM)

(a) Disconnect the C1 camshaft position sensor connector.

Wire Harness Side:

Camshaft Position Sensor Connector

(b) Disconnect the E3 ECM connector.

C1

(c)

Check the resistance between the wire harness side con-

nectors.

Standard (Check for open):

Tester Connection

Specified Condition

G+ (C1-1) - G22+ (E3-26)

Below 1 W

G+

G-

G- (C1-2) - NE- (E3-34)

Front View

A66132

Standard (Check for short):

Tester Connection

Specified Condition

G+ (C1-1) or G22+ (E3-26) - Body ground

10 kW or higher

G- (C1-2) or NE- (E3-34) - Body ground

E3

(d) Reconnect the ECM connector.

G22+

(e) Reconnect the camshaft position sensor connector.

NG REPAIR OR REPLACE HARNESS OR

NE-

ECM Connector

A65743

CONNECTOR

OK

05-176

DIAGNOSTICS

- SFI SYSTEM (April, 2003)

3

CHECK SENSOR INSTALLATION(CAMSHAFT POSITION SENSOR)

(a) Check the camshaft position sensor installation.

NG TIGHTEN SENSOR

OK

4

CHECK CAMSHAFT TIMING GEAR ASSY(TEETH OF PLATE)

(a) Check the teeth of the signal plate.

NG REPLACE CAMSHAFT TIMING GEAR ASSY

OK

REPLACE ECM (See page 10-11)

05-177

DIAGNOSTICS

-

SFI SYSTEM (April, 2003)

05DIO-01

DTC

P0351

IGNITION COIL ”A” PRIMARY/SECONDARY

CIRCUIT

DTC

P0352

IGNITION COIL ”B” PRIMARY/SECONDARY

CIRCUIT

DTC

P0353

IGNITION COIL ”C” PRIMARY/SECONDARY

CIRCUIT

DTC

P0354

IGNITION COIL ”D” PRIMARY/SECONDARY

CIRCUIT

CIRCUIT DESCRIPTION

HINT:

F

These DTCs indicate a malfunction related to the primary circuit.

F

If DTC P0351 is displayed, check the No.1 ignition coil with igniter circuit.

F

If DTC P0352 is displayed, check the No.2 ignition coil with igniter circuit.

F

If DTC P0353 is displayed, check the No.3 ignition coil with igniter circuit.

F

If DTC P0354 is displayed, check the No.4 ignition coil with igniter circuit.

A Direct Ignition System (DIS) is used on this vehicle. The DIS improves the ignition timing accuracy, reduces

high-voltage loss, and enhances the overall reliability of the ignition system by eliminating the distributor.

The DIS is a 1-cylinder ignition system which ignites one cylinder with one ignition coil. In the 1-cylinder

ignition system, the one spark plug is connected to the end of the secondary winding. High voltage generated

in the secondary winding is applied directly to the spark plug. The spark of the spark plug passes from the

center electrode to the ground electrode.

The ECM determines the ignition timing and outputs the ignition signals (IGT) for each cylinder. Using the

ignition (IGT) signal, the ECM turns on and off the power transistor inside the igniter and this switches on

and off the current to the primary coil. When the current flow to the primary coil is cut off, high-voltage is

generated in the secondary coil and this voltage is applied to the spark plugs to spark inside the cylinders.

As the ECM cuts the current to the primary coil, the igniter sends back the ignition confirmation (IGF) signal

for each cylinder ignition to the ECM.

05-178

DIAGNOSTICS

- SFI SYSTEM (April, 2003)

From Battery

ECM

Igniter

No.1 Ignition

Coil with igniter

IGT1

Crankshaft

No. 1 Spark Plug

Position

IGF

Sensor

Ignition Coil

IGT2

No.2 Ignition

No. 2 Spark Plug

Coil with igniter

Camshaft

Position

Sensor

IGT3

No.3 Ignition

No. 3 Spark Plug

Coil with igniter

Other Sensors

IGT4

No.4 Ignition

No. 4 Spark Plug

(Engine Coolant Tem-

Coil with igniter

perature Sensor, Mass

Air Flow Sensor, Throttle

Position Sensor, etc.)

TACH

To Tachometer

A85099

DTC No.

DTC Detection Condition

Trouble Area

F Ignition system

P0351

F Open or short in IGF or IGT circuit from ignition coil with ignit-

P0352

No IGF signal to ECM while engine is running

er to ECM (ignition coil circuit 1 through 4)

P0353

F Ignition coil with igniter (ignition coil circuit 1 through 4)

P0354

F ECM

05-179

DIAGNOSTICS

- SFI SYSTEM (April, 2003)

MONITOR DESCRIPTION

Ignition Coil with Igniter

IGT

ignition coil

ECM

Igniter

IGF

Ignition signal

(IGT)

Normal

Ignition

confirmation

Malfunction

signal (IGF)

Circuit Open

time

A82388

If the ECM does not receive the ignition confirmation signal (IGF) after sending the ignition signal (IGT), it

interprets this as a fault in the igniter and sets a DTC.

MONITOR STRATEGY

P0351

No. 1 ignition coil with igniter circuit malfunction

P0352

No. 2 ignition coil with igniter circuit malfunction

Related DTCs

P0353

No. 3 ignition coil with igniter circuit malfunction

P0354

No. 4 ignition coil with igniter circuit malfunction

Required sensors/components

Igniter

Frequency of operation

Continuous

Duration

0.256 seconds

MIL operation

Immediately

Sequence of operation

None

05-180

DIAGNOSTICS

- SFI SYSTEM (April, 2003)

TYPICAL ENABLING CONDITIONS

Specification

Item

Minimum

Maximum

The monitor will run whenever the follow-

See ”List of Disable a Monitor” (On page 05-25)

ing DTCs are not present

Engine speed

-

1,500 rpm

Following condition is met:

(a) or (b)

(a) Following conditions are met:

1 and 2

1. Engine speed

-

500 rpm

2. Battery voltage

6 V

-

(b) Following conditions are met:

1 and 2

1. Engine speed

500 rpm

-

2. Battery voltage

10 V

-

TYPICAL MALFUNCTION THRESHOLDS

Detection Criteria

Threshold

Ignition signal fail count

More than 2 times

”Ignition signal fail count” works as follows:

When IGF should have returned despite sending IGT

COMPONENT OPERATING RANGE

Standard Value

Confirmed signal number equals ignition signal number