Engine Diagnostic Trouble Code (DTC) Detecting Criteria (H4DO): Diagnosis Subaru Forester SJ

OUTLINE OF DIAGNOSIS

Detect the AVCS system malfunction.

Judge NG when the amount of AVCS actual timing advance does not approach to the amount of AVCS target timing advance.

DIAGNOSTIC METHOD

When the differences of target timing advance amount and actual timing advance amount is calculated during AVCS control, and the difference per predetermined time is the specified value or larger.

1. Abnormality Judgment

Judge as NG when the following conditions are established within the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 25000 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established within the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 25000 ms

Note. For the detection standard, refer to P000A. < Ref. to DTC P000A A CAMSHAFT POSITION SLOW RESPONSE (BANK 1) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Detect open or short circuit of the oil control solenoid.

Judge as NG when the current is small even though the duty signal is large.

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 2000 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 2000 ms

Detect the AVCS system malfunction.

Judge as NG when the conditions during which the differences of AVCS target timing advance amount and AVCS actual timing advance amount is large continues.

When the conditions during which the differences of AVCS target timing advance amount and AVCS actual timing advance amount is large continues for certain amount of time.

1. Abnormality Judgment

Judge as NG when the following conditions are established within the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 5000 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established within the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 5000 ms

Detect the AVCS system malfunction.

Judge as NG when standard timing advance amount is far from learning angle.

Judge as NG when the absolute value of the difference between cam signal input position and learning value is out of specification.

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 5000 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

Note. Initial standard learning value is the value of crank angle initially input at the production plant. And then it will be updated every time normal judgment has been completed. Learning value will not be updated if NG judgment occurs because timing belt or chain derails suddenly in process or because wrong assembly occurs during servicing.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Note. For the detection standard, refer to DTC P0016. < Ref. to DTC P0016 CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION (BANK1) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC P0010. < Ref. to DTC P0010 "A" CAMSHAFT POSITION ACTUATOR CIRCUIT/OPEN (BANK 1) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC P0011. < Ref. to DTC P0011 INTAKE CAMSHAFT POSITION - TIMING OVER-ADVANCED OR SYSTEM PERFORMANCE (BANK 1) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Detect functional errors of the front oxygen (A/F) sensor heater.

Judge as NG when it is determined that the front oxygen (A/F) sensor impedance is large when looking at engine status such as deceleration fuel cut.

Scheme 2

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 10000 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 10000 ms

Detect front oxygen (A/F) sensor heater open or short circuit.

The front oxygen (A/F) sensor heater performs duty control, and the output terminal voltage at ON is 0 V, and the output terminal voltage at OFF is the battery voltage.

Judge as NG when the terminal voltage remains Low.

Scheme 3

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 4 ms x 250 time(s)

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect front oxygen (A/F) sensor heater open or short circuit.

The front oxygen (A/F) sensor heater performs duty control, and the output terminal voltage at ON is 0 V, and the output terminal voltage at OFF is the battery voltage.

Judge as NG when the terminal voltage remains High.

Scheme 4

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 4 ms x 500 time(s)

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the rear oxygen sensor heater open or short circuit.

The rear oxygen sensor heater performs duty control, and the output terminal voltage at ON is 0 V, and the output terminal voltage at OFF is the battery voltage.

Judge as NG when the terminal voltage remains Low.

Scheme 5

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 8 ms x 1250 time(s)

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the rear oxygen sensor heater open or short circuit.

The rear oxygen sensor heater performs duty control, and the output terminal voltage at ON is 0 V, and the output terminal voltage at OFF is the battery voltage.

Judge as NG when the terminal voltage remains High.

Scheme 6

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 8 ms x 1250 time(s)

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect problems in the intake manifold pressure sensor output properties.

Judge as NG when the intake air pressure AD value is Low whereas it seemed to be High from the viewpoint of engine condition, or when it is High whereas it seemed to be Low from the engine condition.

Scheme 7

1. Abnormality Judgment

Judge as NG when Low side or High side becomes NG.

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis

Low side: 5000 ms

High side: 10000 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG when both Low side and High side become OK.

If the duration of time while the following conditions are met is longer than the time indicated, judge as OK.

JUDGMENT VALUE

Time Needed for Diagnosis

Low side: Less than 1 second

High side: Less than 1 second

Detect the malfunction of air flow sensor output properties.

Judge as a low side NG when the air flow voltage indicates a small value regardless of running in a state where the air flow voltage increases. Judge as a high side NG when the air flow voltage indicates a large value regardless of running in a state where the air flow voltage decreases. Judge air flow sensor property NG when the Low side or High side becomes NG.

Scheme 8

1. Abnormality Judgment

Judge as NG when Low side or High side becomes NG.

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis

Low: 5000 ms

High: 10000 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG when both Low side and High side become OK.

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis

Low: Less than 1 second

High: Less than 1 second

Detect open or short circuits of the air flow sensor.

Judge as NG if out of specification.

Scheme 9

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect open or short circuits of the air flow sensor.

Judge as NG if out of specification.

Scheme 10

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of intake manifold pressure sensor.

Judge as NG if out of specification.

Scheme 11

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 2000 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of intake manifold pressure sensor.

Judge as NG if out of specification.

Scheme 12

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 2000 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the malfunction of intake air temperature sensor output property.

Judge as NG when the intake air temperature is not varied whereas it seemed to be varied from the viewpoint of engine condition.

Scheme 13

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect open or short circuit of the intake air temperature sensor.

Judge as NG if out of specification.

Scheme 14

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect open or short circuit of the intake air temperature sensor.

Judge as NG if out of specification.

Scheme 15

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the malfunction of the engine coolant temperature sensor characteristics.

When the ignition is ON after the specified period of soaking time has elapsed, compare the engine coolant temperature with intake air temperature. Judge as NG if the difference between two temperatures is larger than the predetermined value and the engine coolant temperature becomes the specified value or more.

Scheme 16

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 512 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of the engine coolant temperature sensor.

Judge as NG if out of specification.

Scheme 17

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Time Needed for Diagnosis: 500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

JUDGMENT VALUE

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of the engine coolant temperature sensor.

Judge as NG if out of specification.

Scheme 18

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of throttle position sensor 1.

Judge as NG if out of specification.

Scheme 19

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 24 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 24 ms

Detect the open or short circuit of throttle position sensor 1.

Judge as NG if out of specification.

Scheme 20

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 24 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 24 ms

Detect the malfunction of engine coolant temperature output property.

Judge as NG when the engine coolant temperature does not rise in driving conditions where it should.

Scheme 21

1. Abnormality Judgment

Judge as NG if the criteria below are met.

JUDGMENT VALUE

Timer for diagnosis after engine start

64 ms + TWCNT ms (when at 64 ms)

TWCNT is shown in the following table.

Time Needed for Diagnosis: 120 or 300 seconds

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG when the malfunction criteria below are met.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect malfunctions of the thermostat function.

Judge as NG when any one of the following conditions is established.

1. When the actual engine coolant temperature does not reach the maximum temperature necessary to perform other OBDII diagnosis and Sum (Estimated engine coolant temperature - actual engine coolant temperature) exceeded the predetermined value. (Judgment 1)
2. When the actual engine coolant temperature does not reach the range within -11°C (-19.8°F) from the regulated temperature and Sum (Estimated engine coolant temperature - actual engine coolant temperature) exceeded the predetermined value. (Judgment 2)
3. When the difference between the estimated coolant temperature and the actual engine coolant temperature exceeds the predetermined value, and Sum (Estimated engine coolant temperature - actual engine coolant temperature) exceeded the predetermined value. (Judgment 3)

Scheme 22

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

MAP SPECIFICATION 4

MAP SPECIFICATION 5

MAP SPECIFICATION 6

MAP SPECIFICATION 7

MAP SPECIFICATION 8

MAP SPECIFICATION 9

Time Needed for Diagnosis: 300 - 700 seconds

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

MAP SPECIFICATION 10

Time Needed for Diagnosis: 300 - 700 seconds

Detect the open or short circuit of sensor.

Judge as NG, when the element voltage is out of the specified range.

Scheme 23

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis

Input voltage (+): 1000 ms

Input voltage (-): 1000 ms

Input voltage (+) - Input voltage (-): 1000 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of sensor.

Judge as NG, when the element voltage is out of the specified range.

Scheme 24

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis

Input voltage (+): 1000 ms

Input voltage (-): 1000 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect open circuits of the sensor.

Judge as NG when the impedance of the element is large.

Scheme 25

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 5000 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect continuity NG of the oxygen sensor. If the oxygen sensor voltage reading is not within the probable range considering the operating conditions, judge as NG.

Scheme 26

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis

High: 2500 ms

Low (1): 20000 ms

Low (2): 40000 ms

Low (3): Value from Map

MAP SPECIFICATION

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis

High: Less than 1 second

Low (1): Less than 1 second

Low (2): Less than 1 second

Low (3): Less than 1 second

Note. For the detection standard, refer to DTC P0137. < Ref. to DTC P0137 O2 SENSOR CIRCUIT LOW VOLTAGE (BANK 1 SENSOR 2) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Detect the slow response of rich --> lean for rear oxygen sensor output.

When the deceleration fuel cut has occurred, detect the trouble by calculating the time when the rear oxygen sensor output passes through the predetermined range of voltages.

Judge as NG when the response time is larger than the threshold value.

Scheme 27

Detect the trouble by calculating the response time of the rear oxygen sensor during fuel cut.

Scheme 28

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 10 seconds

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 10 seconds

Detect the slow response of lean --> rich for rear oxygen sensor output.

After the deceleration fuel cut has occurred, detect the trouble by calculating the time when the rear oxygen sensor output passes through the predetermined range of voltages.

Judge as NG when the response time is larger than the threshold value.

Scheme 29

Detect the trouble by calculating the response time of the rear oxygen sensor after fuel cut.

Scheme 30

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 10 seconds

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 10 seconds

Detect the delayed response of rear oxygen sensor output for rich --> lean.

After the deceleration fuel cut has started, detect the trouble by calculating the time when the rear oxygen sensor output decreases to the predetermined voltages.

Judge as NG when the response time is larger than the threshold value.

Scheme 31

Detect the trouble by calculating the time from the beginning of the fuel cut to the beginning of the rear oxygen sensor voltage starting to drop.

Scheme 32

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 10 seconds

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 10 seconds

Detect the delayed response of rear oxygen sensor output for lean --> rich.

After the deceleration fuel cut has completed, detect the trouble by calculating the time when the rear oxygen sensor output increases to the predetermined voltages.

Judge as NG when the response time is larger than the threshold value.

Scheme 33

Detect the trouble by calculating the time from the completion of the fuel cut to the beginning of the rear oxygen sensor voltage starting to rise.

Scheme 34

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 10 seconds

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 10 seconds

Detect the rear oxygen sensor open or short circuit. Judge as NG when the rear oxygen sensor voltage can be determined to be abnormal considering conditions such as intake air amount, engine coolant temperature, main feedback control and deceleration fuel cut.

Scheme 35

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 90000 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Detect the malfunction of rear oxygen sensor heater.

While observing the engine condition, judge as NG if the rear oxygen sensor impedance is great.

Scheme 36

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 4 ms x 2500 time(s)

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 4 ms x 2500 time(s)

Detect the slow response of front oxygen (A/F) sensor.

For diagnosis, detect the trouble by processing the lambda waveform in normal driving without forcibly changing the target air fuel ratio.

Scheme 37

DIAGNOSTIC METHOD 1

Detect the malfunction by checking "Cumulative value of time when lambda changes from lean --> rich" in comparison to "Time during which diagnosis is in progress".

Scheme 38

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 90 seconds

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 90 seconds

DIAGNOSTIC METHOD 2

Detect the malfunction by the cumulative value obtained from the amount of variation in lambda change.

Scheme 39

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

MAP SPECIFICATION (CVT MODEL EXCEPT FOR PZEV)

MAP SPECIFICATION (MT MODEL EXCEPT FOR PZEV)

MAP SPECIFICATION (PZEV CVT MODEL)

MAP SPECIFICATION (PZEV MT MODEL)

Time Needed for Diagnosis: 90 seconds

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 90 seconds

Note. For the detection standard, refer to DTC P014C. < Ref. to DTC P014C O2 SENSOR SLOW RESPONSE - RICH TO LEAN (BANK 1 SENSOR 1) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Detect the slow response of front oxygen (A/F) sensor.

For diagnosis, detect the trouble by processing the lambda waveform in normal driving without forcibly changing the target air fuel ratio.

Scheme 40

Detect the malfunction depending on the average value of time necessary for lambda to inverse the air fuel ratio from "Lean --> Rich --> Lean" to "Rich --> Lean --> Rich".

Scheme 41

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 50 times of inversion

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 50 times of inversion

Detect the malfunction by calculating the average amplitude of lambda.

Scheme 42

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 11250 time(s) x 8 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 11250 time(s) x 8 ms

DIAGNOSIS METHOD 3 (MT MODEL ONLY)

Change STFT (A/F compensation value) by interruption, and measure the reaction time of lambda value. When A/F sensor malfunctions, the reaction time takes longer than at normal condition. In this case, judge as abnormal.

Scheme 43

Measure reaction time (t1, t2, t3) and reaction time (t4, t5, t6). Use the average value of the reaction time to obtain the diagnostic value.

Scheme 44

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 1000 ms x [1 time(s)/2] + 1000 ms x 3 time(s) + 500 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 1000 ms x [1 time(s)/2] + 1000 ms x 3 time(s) + 500 ms

Note. For the detection standard, refer to DTC P015A. < Ref. to DTC P015A O2 SENSOR DELAYED RESPONSE - RICH TO LEAN (BANK 1 SENSOR 1) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Detect fuel system malfunction by the amount of main feedback control.

Fuel system is diagnosed by comparing the target air fuel ratio calculated by ECM with the actual air fuel ratio measured by sensor.

1. Abnormality Judgment

Compare the diagnostic value (fsobd) with the threshold value, and if a condition meeting the malfunction criteria below continues for 10 s x 3 time(s) or more, judge that there is a fault in the fuel system.

JUDGMENT VALUE

MAP SPECIFICATION 2

Time Needed for Diagnosis: 10 s x 3 time(s)

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 10 s

Detect fuel system malfunction by the amount of main feedback control.

Diagnostic method

Fuel system is diagnosed by comparing the target air fuel ratio calculated by ECM with the actual air fuel ratio measured by sensor.

1. Abnormality Judgment

Compare the diagnostic value (fsobd) with the threshold value, and if a condition meeting the malfunction criteria below continues for 10 s x 3 time(s) or more, judge that there is a fault in the fuel system.

JUDGMENT VALUE

MAP SPECIFICATION 2

Time Needed for Diagnosis: 10 s x 3 time(s)

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK if the status that the criteria below are met continues for 10 seconds.

JUDGMENT VALUE

Time Needed for Diagnosis: 10 s

Detect for abnormal values in the oil temperature sensor output properties.

Judge as NG when the oil temperature does not rise even though the engine is running under a condition where it should rise.

Scheme 45

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

After engine start oil temperature sensor characteristic diagnosis timer (timer for diagnosis)

1. Timer stop at fuel cut
2. During the driving conditions except a) above, timer counts up as follows.

64 ms + TOILCNT ms (when at 64 ms)

Where, TOILCNT is determined as follows

TOILCNT = 0 at idle switch ON

For TOILCNT at Idle switch off, refer to the following table.

After engine start oil temperature characteristic diagnosis timer judgment value (t)

t = 1631442 - 46424 x Ti (t > or = 238722)

Ti = The lowest engine oil temperature after starting the engine

Time Needed for Diagnosis: Less than 1 second

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of the oil temperature sensor.

Judge as NG when outside of the judgment value.

Scheme 46

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of the oil temperature sensor.

Judge as NG when outside of the judgment value.

Scheme 47

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Based on the self-diagnostic result of the injector driving IC, judge the injector driving circuit as normal or abnormal.

Injector driving IC detects the status of "fuel remains injected" or "fuel is not injected" as a malfunction.

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 2500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Note. For the detection standard, refer to DTC P0201. < Ref. to DTC P0201 INJECTOR #1 , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC P0201. < Ref. to DTC P0201 INJECTOR #1 , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC P0201. < Ref. to DTC P0201 INJECTOR #1 , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Detect the open or short circuit of throttle position sensor 2.

Judge as NG if out of specification.

Scheme 48

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 24 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 24 ms

Detect the open or short circuit of throttle position sensor 2.

Judge as NG if out of specification.

Scheme 49

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 24 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 24 ms

Note. For the detection standard, refer to DTC P0301. < Ref. to DTC P0301 CYLINDER 1 MISFIRE DETECTED , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Detect the presence of misfire occurrence. (Revolution fluctuation method)

Monitoring Misfire which influences exhaust deterioration (1.5 times of FTP) and catalyst damage is made obligatory by the law. Misfire affecting these two has two patterns below

1. Intermittent misfire (The same cylinder misfires in random, or different cylinders misfire in random.): FTP 1.5 times misfire
2. Every time misfire (The same cylinder misfires every time.): FTP 1.5 times misfire, Catalyst damage misfire

The following detecting methods are adopted for these detection.

1. Intermittent misfire: FTP 1.5 times misfire 180° Interval Difference Method (MT: 1, 800 rpm or less; CVT: None) 360° Interval Difference Method (whole range) 720° Interval Difference Method (3, 000 rpm or more)
2. Misfire every time: FTP 1.5 times misfire, Catalyst damage misfire

1. 360° Interval Difference Method

When a misfire occurs, the engine speed will decrease and the crankshaft position speed will change. Calculate the interval difference value (diagnostic value) from crankshaft position speed by the following formula, and judge whether a misfire is occurring or not comparing the calculated result with judgment value. Count the number of misfires, if the misfire ratio is higher during 1000 revs. or 200 revs., judge corresponding cylinders as NG.

As shown in the following figure, pick a cylinder as the standard and name it omg 0. And the former crankshaft position speed is named omg 1, the second former crankshaft position speed is named omg 2, the third is named omg 3, etc.

Scheme 50

Note. For the detection standard, refer to DTC P0301. < Ref. to DTC P0301 CYLINDER 1 MISFIRE DETECTED , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC P0301. < Ref. to DTC P0301 CYLINDER 1 MISFIRE DETECTED , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC P0301. < Ref. to DTC P0301 CYLINDER 1 MISFIRE DETECTED , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Detect the open or short circuit of knock sensor.

Judge as NG if out of specification.

Scheme 51

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 1000 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of knock sensor.

Judge as NG if out of specification.

Scheme 52

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 1000 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of the crankshaft position sensor.

Judge as NG when the crank signal is not input even though the starter was rotated.

Scheme 53

Scheme 54

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 3000 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect for faults in crankshaft position sensor output properties.

Judge as NG when there is a problem in the number of crankshaft signals for every revolution of crankshaft.

Scheme 55

Scheme 56

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 10 engine revs. engine revs.

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of the camshaft position sensor.

When there is no camshaft position signal input continuously, judge as NG.

Scheme 57

1. Abnormality Judgment

Diagnosis 1

Judge as NG when no input of camshaft position sensor signal in TDC remains for 10 time(s).

JUDGMENT VALUE

Time Needed for Diagnosis: TDC x 10 time(s)

Diagnosis 2

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 3000 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Diagnosis 1

Judge as OK and clear the NG when the malfunction criteria below are met.

JUDGMENT VALUE

Time Needed for Diagnosis: TDC x 10 time(s)

Diagnosis 2

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 32 ms

Detect the malfunction of camshaft position sensor property.

Judge as NG when the number of camshaft signals remains abnormal.

Scheme 58

1. Abnormality Judgment

Judge as NG when the status where the number of camshaft position sensor signal in two crankshaft revolutions is other than 3 time(s).

JUDGMENT VALUE

Time Needed for Diagnosis: Engine two revolutions x 4 time(s)

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG when the malfunction criteria below are met.

JUDGMENT VALUE

Time Needed for Diagnosis: Engine two revolutions

Note. For the detection standard, refer to DTC P0340. < Ref. to DTC P0340 CAMSHAFT POSITION SENSOR "A" CIRCUIT (BANK 1 OR SINGLE SENSOR) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC P0341. < Ref. to DTC P0341 CAMSHAFT POSITION SENSOR "A" CIRCUIT RANGE/PERFORMANCE (BANK 1 OR SINGLE SENSOR) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Based on the self-diagnostic result of the ignition coil driving IC, judge the ignition coil driving circuit as normal or abnormal.

The ignition coil driving IC detects "no ignition" status as a malfunction.

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 2500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Note. For the detection standard, refer to DTC P0351. < Ref. to DTC P0351 IGNITION COIL A PRIMARY/SECONDARY CIRCUIT , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC P0351. < Ref. to DTC P0351 IGNITION COIL A PRIMARY/SECONDARY CIRCUIT , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC P0351. < Ref. to DTC P0351 IGNITION COIL A PRIMARY/SECONDARY CIRCUIT , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Detect EGR system malfunction.

Intake manifold pressure (negative pressure) is constant because the throttle valve is fully closed during deceleration fuel cut. At this time, when the EGR valve is opened/closed, the intake manifold pressure will change. EGR System OK/NG is judged by the range of this change.

Scheme 59

Measure the pressure values when the enable conditions are established, and perform diagnosis by calculating those results.

1. Label the intake manifold pressure value as PMOF1, which is observed when enable conditions are established, and set the EGR target step to 45 step(s) (nearly full open).
2. Label the intake manifold pressure value as PMON, which is observed after 1000 ms has passed since EGR target step was set to 45 step(s) (when the enable conditions were established), and set the EGR target step to 0.
3. Label the intake manifold pressure as PMOF2, which is observed after 1000 ms has passed since EGR target step was set to 0 (after (1000 ms + 1000 ms) have passed since the enable conditions were established).

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 1 time

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

Scheme 60

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 1 time

Detect the deterioration of the catalyst function.

Though the front oxygen sensor output would change slowly with a new catalyst, the sensor output with a deteriorated catalyst becomes high and the inversion time is shortened.

For this reason, the catalyst diagnosis is carried out by monitoring the front oxygen sensor output and comparing it with the front oxygen (A/F) sensor output.

Scheme 61

After the enable conditions have been established, calculate the front oxygen (A/F) sensor lambda value deviation sum value (Sum (sglmd n - sglmd n-1 )), and rear oxygen sensor output voltage deviation sum value (Sum (ro2sad n - ro2sad n-1 )) in every 32 ms x 4 times. If the front oxygen (A/F) sensor lambda value deviation sum value (Sum (sglmd n - sglmd n-1 )) is the predetermined value or more, calculate the diagnostic value.

1. Abnormality Judgment

If the duration of time while the following conditions are met is within the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 30 - 55 seconds

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is within the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 30 - 55 seconds

Detect the malfunction of purge flow by the change of ELCM pressure sensor output value before/after purge introduction.

First diagnosis

Pressure decreases when the purge is introduced compared with when the purge is not performed. By using this, judge if the purge is correctly performed. If there is no pressure decrease, go to the SECOND DIAGNOSIS .

Scheme 62

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 26 seconds

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 26 seconds

Second diagnosis

Close the ELCM switching valve, and close the fuel tank completely, and perform the forced purging. If pressure change amount is 0.7 kPa (5 mmHg, 0.2 inHg) or less, judge as malfunction of purge flow.

Scheme 63

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 21 seconds

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 21 second

Detect the malfunction of ELCM pressure sensor output properties.

Judge as NG when the ELCM pressure sensor output value is largely different from the intake manifold pressure when the ignition switch is ON.

Scheme 64

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 328 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 262 ms

Detect the open or short circuit of the ELCM pressure sensor.

Judge as NG if out of specification.

Scheme 65

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 1000 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of the ELCM pressure sensor.

Judge as NG if out of specification.

Scheme 66

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 1000 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

This diagnosis judges whether the ELCM operation is normal or not, and whether the evaporative emission system has leak and clogging or not.

To purge the canister, after driving, perform the five hours soaking after ignition switch OFF in order to stabilize the evaporative gas status. * After 5, 7 or 9.5 hours passed, ECM is activated by soaking timer, and the leak check is started.

Judges whether the ELCM operation is normal or not, by measuring the reference pressure status via reference orifice (0.02 inch orifice). Judge as malfunction if the reference pressure is out of specified range. Then, judge whether there is a leak or not, by comparing the pressure (leak pressure) when the reference pressure and the evaporative emission system are in negative pressure condition. Judge as system leak in the evaporative emission system if the leak pressure is higher than reference pressure. Judge as clogging of pipe if the leak pressure becomes lower than the reference pressure within the specified amount of time.

0.02 inch leak and 0.04 inch leak can be distinguished by measuring the leak pressure.

The diagnosis results are stored inside ECM until the engine is started again.

*: When the test conditions are not met in 5 hours, perform diagnosis at elapsed time of 7 hours. When the test conditions are not met in 7 hours, perform diagnosis at elapsed time of 9.5 hours.

Scheme 67

Mode D (Clogging of pipe diagnosis and leak pressure measurement)

1. Clogging of pipe Purpose: Measure the time required for the evaporative emission system to reach the target negative pressure by the vacuum pump, and detect the clogging of pipe trouble. Judge as clogging of pipe malfunction if the evaporative emission system reaches to the target negative pressure within the specified time. JUDGMENT VALUE Malfunction Criteria Threshold Value DTC Time required to reach to the target negative pressure For target vacuum, use one of the followings. Reference pressure for target vacuum setting - value of Map 4 -5 kPa (-37.298 mmHg, -1.5 inHg) < or = 34000 ms P1451 MAP SPECIFICATION 4 Time of negative pressure introduction ms 0 100000 200000 300000 400000 500000 600000 700000 800000 900000 1000000 1100000 1200000 Reference pressure for setting the target negative pressure - Pressure sensor output value kPa (mmHg, inHg) 0.9 (7.058, 0.3) 0.9 (7.058, 0.3) 0.9 (7.058, 0.3) 0.9 (7.058, 0.3) 0.9 (7.058, 0.3) 0.9 (7.058, 0.3) 0.9 (7.058, 0.3) 0.9 (7.058, 0.3) 0.9 (7.058, 0.3) 0.9 (7.058, 0.3) 0.9 (7.058, 0.3) 0.9 (7.058, 0.3) 0.9 (7.058, 0.3)
2. Leak pressure measurement

Purpose: Measure the pressure (leak pressure) when the evaporative emission system becomes the negative pressure by the vacuum pump.

Store the pressure as a leak pressure while the following conditions are met.

JUDGMENT VALUE

Note. For the detection standard, refer to DTC P0455. < Ref. to DTC P0455 EVAPORATIVE EMISSION SYSTEM LEAK DETECTED (LARGE LEAK) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Detect open or short circuit of the purge control solenoid valve.

Judge as NG when the ECM output level differs from the actual terminal level.

Scheme 68

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 2500 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect open or short circuit of the purge control solenoid valve.

Judge as NG when the ECM output level differs from the actual terminal level.

Scheme 69

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 2500 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect malfunctions of the fuel level sensor output property.

If the fuel level does not vary in a particular driving condition/engine condition where it should, judge as NG.

Scheme 70

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of fuel level sensor. Judge as NG if out of specification.

Scheme 71

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 2500 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of fuel level sensor. Judge as NG if out of specification.

Scheme 72

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 1000 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Judge as NG when outside of the judgment value.

Judge NG when the received data from VDCCM&H/U is abnormal vehicle speed, and the vehicle speed data is impossible.

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 2500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 2500 ms

Detect the malfunction that actual engine speed is not close to target engine speed during idling. Judge as NG when actual engine speed is not close to target engine speed during idling.

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 15 s x 1 time(s)

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 15 s

Detect the malfunction that actual engine speed is not close to target engine speed during idling. Judge as NG when actual engine speed is not close to target engine speed during idling.

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 15 s x 1 time(s)

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 15 s

1. When cold, the abnormality in the control of target engine speed increase is detected. (P050A)

Judge as NG if the exhaust gas temperature diagnosis or idle speed diagnosis is NG.

1. Exhaust gas temperature diagnosis Judge as NG when the estimated exhausted gas temperature in 14 seconds after the cold start is below the specified value.
2. Idle speed diagnosis

Judge as NG when actual engine speed is not close to target engine speed at cold start.

1. Detect malfunctions of the catalyst advanced idling retard angle control. (P050B)

Judge as NG when ECM is not controlling the angle properly during catalyst advanced idling retard angle control.

1. Final ignition timing diagnosis

Judge as NG when actual retard amount is under the specified value at cold start.

1. Exhaust gas temperature diagnosis

Note. For the detection standard, refer to DTC P050A. < Ref. to DTC P050A COLD START IDLE AIR CONTROL SYSTEM PERFORMANCE , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Detect abnormal continuity in the starter SW1.

Judge as ON NG when the starter SW 1 signal remains ON.

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 30000 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of battery temperature sensor.

Judge as NG if out of specification.

Scheme 73

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 500 ms

Malfunction Indicator Light Illumination: Does not illuminate even when malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of battery temperature sensor.

Judge as NG if out of specification.

Scheme 74

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 500 ms

Malfunction Indicator Light Illumination: Does not illuminate even when malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open/short circuit of back-up power supply circuit.

Judge as NG when the backup power voltage is low.

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 2500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the malfunction of microcomputer (RAM).

When there is a problem in the CPU normal RAM, judge as NG.

If it is possible to write data to the whole area of RAM in the initial routine, and is possible to read the same data, it is judged as OK, and if not, NG.

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Judge as NG when SUM value of ROM is outside the standard value.

Abnormality Judgment

Judge as NG if the criteria below are met.

JUDGMENT VALUE

Time Needed for Diagnosis: Undetermined

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

Judge as NG when the CPU operation is abnormal.

1. Instruction check initial
2. Instruction check base
3. Software flow check
4. Software monitor check
5. CAN register check
6. If the output IC operation is abnormal

Scheme 75

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis

1. 2 time(s)
2. 512 ms
3. 504 ms
4. 48 ms
5. None
6. 2500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis

1. None
2. 2000 ms
3. 2000 ms
4. 2000 ms
5. None
6. None

Judge as NG when the monitoring IC operation is abnormal.

1. Monitoring IC Disable (motor continuity cut demand) diagnosis
2. Monitoring IC function diagnosis
3. Monitoring IC register diagnosis

Scheme 76

1. Abnormality Judgment

Judge as NG when one of the following conditions is established.

JUDGMENT VALUE

Time Needed for Diagnosis

1. 24 ms
2. 0.08 s x 2 time(s)
3. 200 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis

1. 80 ms
2. None
3. 2000 ms

Judge as NG when the AD converter operation is abnormal.

Scheme 77

1. Abnormality Judgment

Judge as NG when one of the following conditions is established.

JUDGMENT VALUE

Time Needed for Diagnosis: 200 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 2000 ms

1. Model without push button start

Detect abnormal continuity in the starter SW1.

Judge as OFF NG when the starter SW 1 signal remains OFF.

1. Model with push button start

Detect abnormal continuity in the starter SW 2.

Judge as OFF NG when the starter SW 2 signal remains OFF.

1. Abnormality Judgment

Judge as OFF NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OFF OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

1. Model without push button start

Detect abnormal continuity in the starter SW1.

Judge as ON NG when the starter SW 1 signal remains ON.

1. Model with push button start

Detect abnormal continuity in the starter SW 2.

Judge as ON NG when the starter SW 2 signal remains ON.

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis

1. Model without push button start: 30000 ms
2. Model with push button start: 2000 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OFF OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Judge as NG when the EEPROM operation is abnormal.

Scheme 78

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 2 times

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: None

Judge as NG when there is CAN communication with the TCM and there is a MIL lighting request.

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 2500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect abnormal continuity in the starter cut relay.

Judge as NG when the starter cut relay output line is open.

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of neutral SW.

Judge as NG when the ECM neutral terminal input differs from the reception data from TCM.

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 64 ms x 100 time(s)

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of neutral SW.

Judge as NG when there is no change in the neutral SW even if the driving shift was applied. (There is neutral SW ON/OFF inversion from the vehicle speed and engine speed.)

1. Abnormality Judgment

Judge NG when the malfunction criteria below are completed determined times or more after the neutral SW change.

JUDGMENT VALUE

Time Needed for Diagnosis: 3 time(s)

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear NG when there is change in the neutral SW.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of neutral SW.

Judge as NG when the ECM neutral terminal input differs from the reception data from TCM.

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 64 ms x 100 time(s)

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of neutral SW.

Judge as NG when there is no change in the neutral SW even if the driving shift was applied. (There is neutral SW ON/OFF inversion from the vehicle speed and engine speed.)

1. Abnormality Judgment

Judge NG when the malfunction criteria below are completed determined times or more after the neutral SW change.

JUDGMENT VALUE

Time Needed for Diagnosis: 3 time(s)

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear NG when there is change in the neutral SW.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Judge as NG when the valve is opened more than the default opening angle, but does not move to the close direction with the motor power stopped.

Scheme 79

1. Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 24 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 3400 ms

Detect the drain filter clogging by the pressure change during purge introduction.

Judge as drain filter clogging malfunction if the pressure in the evaporative emission system piping suddenly decreases by the purging.

Scheme 80

Note. For the detection standard, refer to DTC P0455. < Ref. to DTC P0455 EVAPORATIVE EMISSION SYSTEM LEAK DETECTED (LARGE LEAK) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

1. Detects open or short circuit of EGR.
2. Judge as NG when the ECM output level differs from the actual terminal level.

Scheme 81

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 2500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 256 ms

1. Detects open or short circuit of EGR.
2. Judge as NG when the ECM output level differs from the actual terminal level.

Scheme 82

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 2500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 256 ms

Note. For the detection standard, refer to DTC P1492. < Ref. to DTC P1492 EGR SOLENOID VALVE SIGNAL #1 CIRCUIT MALFUNCTION (LOW INPUT) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC P1493. < Ref. to DTC P1493 EGR SOLENOID VALVE SIGNAL #1 CIRCUIT MALFUNCTION (HIGH INPUT) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC P1492. < Ref. to DTC P1492 EGR SOLENOID VALVE SIGNAL #1 CIRCUIT MALFUNCTION (LOW INPUT) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC P1493. < Ref. to DTC P1493 EGR SOLENOID VALVE SIGNAL #1 CIRCUIT MALFUNCTION (HIGH INPUT) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC P1492. < Ref. to DTC P1492 EGR SOLENOID VALVE SIGNAL #1 CIRCUIT MALFUNCTION (LOW INPUT) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC P1493. < Ref. to DTC P1493 EGR SOLENOID VALVE SIGNAL #1 CIRCUIT MALFUNCTION (HIGH INPUT) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Detect the open or short circuit of battery current sensor.

Judge as NG if out of specification.

Scheme 83

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 500 ms

Malfunction Indicator Light Illumination: Does not illuminate even when malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of battery current sensor.

Judge as NG if out of specification.

Scheme 84

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 500 ms

Malfunction Indicator Light Illumination: Does not illuminate even when malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the output property and malfunction of battery current sensor.

Judge as NG when there is no variation (stuck) under a condition where the battery current sensor output should have changed or when difference between output and battery current value is larger than expected (characteristics malfunction).

Scheme 85

1. Abnormality Judgment
2. Stuck

Judge as NG when the following conditions are repeated 10 time(s) or more.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Malfunction Indicator Light Illumination: Does not illuminate even when malfunction occurs.

1. Characteristics malfunction (Charge side)

Within 30000 ms from "enable condition not met" to "enable condition met", judge as NG when the time required for meeting the following conditions exceeds the predetermined time.

(When NG judgment is performed, NG status is retained during that driving cycle.)

JUDGMENT VALUE

Time Needed for Diagnosis: 26000 ms

Malfunction Indicator Light Illumination: Does not illuminate even when malfunction occurs.

1. Characteristics malfunction (Discharge side)

Within 30000 ms from "enable condition not met" to "enable condition met", judge as NG when the time required for meeting the following conditions exceeds the predetermined time.

(Within 30000 ms from "enable condition not met" to "enable condition met", the target duty > or = 60 % has not been experienced.)

JUDGMENT VALUE

Time Needed for Diagnosis: 26000 ms

Malfunction Indicator Light Illumination: Does not illuminate even when malfunction occurs.

1. Normality Judgment
2. Stuck

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

1. Characteristics malfunction (Charge side)

Within 30000 ms from "enable condition not met" to "enable condition met", judge as OK and clear the NG when the time required for meeting the following conditions does not reach the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 26000 ms

1. Characteristics malfunction (Discharge side)

Within 30000 ms from "enable condition not met" to "enable condition met", judge as OK and clear the NG when the time required for meeting the following conditions does not reach the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 26000 ms

Judge as NG when the conditions for the outline of the diagnosis of the top are established.

Note. For the detection standard, refer to DTC B1570. < Ref. to DTC B1570 ANTENNA , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC B1570. < Ref. to DTC B1570 ANTENNA , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC B1570. < Ref. to DTC B1570 ANTENNA , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC B1570. < Ref. to DTC B1570 ANTENNA , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC B1570. < Ref. to DTC B1570 ANTENNA , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC B1570. < Ref. to DTC B1570 ANTENNA , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Note. For the detection standard, refer to DTC B1570. < Ref. to DTC B1570 ANTENNA , Diagnostic Trouble Code (DTC) Detecting Criteria. >

Detect the malfunction of tumble generator valve motor function.

Judge open fixing malfunction when the opening degree is large even after finishing the tumble generator valve closing driving.

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 4600 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 1600 ms

Detect the malfunction of tumble generator valve motor function.

Judge open fixing malfunction when the opening degree is large even after finishing the tumble generator valve closing driving.

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 4600 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 1600 ms

Detect the malfunction of tumble generator valve motor function.

Judge close fixing malfunction when the opening degree is small even after finishing the tumble generator valve open driving.

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 4600 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 1600 ms

Detect the malfunction of tumble generator valve motor function.

Judge close fixing malfunction when the opening degree is small even after finishing the tumble generator valve open driving.

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 4600 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Time Needed for Diagnosis: 1600 ms

Detect the open or short circuit of tumble generator valve motor.

Judge as NG when the overcurrent signal is sent from IC after tumble generator valve driving IC diagnosis.

Scheme 86

1. Abnormality Judgment

At the main IC, check the sent signal at each timing which occurs just before the tumble generator valve output is set to ON --> OFF, and judge open NG when the open NG signal is sent 96 ms x 10 time(s) in a row.

JUDGMENT VALUE

Time Needed for Diagnosis: 96 ms x 10 time(s)

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG when the OK signal is sent.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of tumble generator valve motor.

Judge as NG when the overcurrent signal is sent from IC after tumble generator valve driving IC diagnosis.

Scheme 87

1. Abnormality Judgment

At the main IC, check the sent signal at each timing which occurs just before the tumble generator valve output is set to ON --> OFF, and judge open NG when the open NG signal is sent 96 ms x 10 time(s) in a row.

JUDGMENT VALUE

Time Needed for Diagnosis: 96 ms x 10 time(s)

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG when the OK signal is sent.

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

Detect the malfunction of fuel system from the size of the sub feedback learning value.

Control the sub feedback learning and judge as NG when the learning value is in the lean zone.

Scheme 88

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 1 s x 1 time(s)

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 1 s

Detect the malfunction of fuel system from the size of the sub feedback learning value.

Sub feedback learning is being performed. When the learning value goes to the rich side, judge as NG.

Scheme 89

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 1 s x 1 time(s)

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 1 s

Judge as NG when the motor current becomes large or drive circuit is heated.

Scheme 90

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 512 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 2000 ms

Judge as NG when the electronic throttle control power is not supplied even when ECM sets the electronic throttle control relay to ON.

Scheme 91

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 352 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 2000 ms

Judge as NG when the electronic throttle control power is supplied even when ECM sets the electronic throttle control relay to OFF.

Scheme 92

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 600 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 400 ms

Judge as NG when full close point learning cannot conducted or abnormal value is detected.

Scheme 93

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 8 ms - 80 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 8 ms

Judge as NG when the target opening angle and actual opening angle is mismatched or the current to motor is the specified duty or more for specified time continuously.

Scheme 94

Judge as OK and clear the NG when the malfunction criteria below are met.

JUDGMENT VALUE

Time Needed for Diagnosis

1. Difference between target opening angle and actual opening angle: NG judgment: See «DETAILS OF JUDGMENT TIME»(ref-662154-S17561103642014101300000) OK judgment: 2000 ms
2. Output duty to driving circuit: 2000 ms

Scheme 95

Scheme 96

Note. Judgment time when actual opening angle < or = target opening angle is always 1000 milliseconds.

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

Detect the open or short circuit of accelerator pedal position sensor 1.

Judge as NG if out of specification.

Scheme 97

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 100 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 100 ms

Detect the open or short circuit of accelerator pedal position sensor 1.

Judge as NG if out of specification.

Scheme 98

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 32 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 32 ms

Detect the open or short circuit of accelerator pedal position sensor 2.

Judge as NG if out of specification.

Scheme 99

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 100 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 100 ms

Detect the open or short circuit of accelerator pedal position sensor 2.

Judge as NG if out of specification.

Scheme 100

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Time Needed for Diagnosis: 100 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 100 ms

Judge as NG when the signal level of throttle position sensor 1 is different from the throttle position sensor 2.

Scheme 101

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Details of Judgment Value

Scheme 102

Time Needed for Diagnosis: 212 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Time Needed for Diagnosis: 24 ms

Judge as NG when the signal level of throttle position sensor 1 is different from the throttle position sensor 2.

Scheme 103

1. Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Details of Judgment Value

Scheme 104

Time Needed for Diagnosis: 116 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

1. Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.