Diagnostic Trouble Code (DTC) Detecting Criteria (sti) Subaru Impreza WRX GD/GG рестайлинг 2

LIST

DIAGNOSTIC TROUBLE CODE

OUTLINE OF DIAGNOSIS

Detect the malfunction of AVCS system.

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

AVCS System - System Diagram. Scheme 214

ENABLE CONDITION (FOR ABNORMALITY JUDGMENT ONLY)

ENABLE CONDITION CHART

GENERAL DRIVING CYCLE

Always perform the diagnosis after idling when the amount of AVCS target timing advance is equal to 0.

DIAGNOSTIC METHOD

Judge NG when the difference of the amount of AVCS target timing advance and the amount of AVCS actual timing advance becomes large, and judge OK when the difference becomes small.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 10 seconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 10 seconds

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

1. Normality Judgment

Judge OK and clear the NG when the continuous time of completing the malfunction criteria below becomes more than 3 seconds.

Judgment Value

JUDGMENT VALUE CHART

DTC CLEAR CONDITION

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

MALFUNCTION INDICATOR LIGHT CLEAR CONDITION

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

FAIL SAFE

1. Ignition timing whole learning compensation: Enter the initial value (whole learning compensation factor = 0.5, Variable amount of whole learning compensation factor = 0.25) to the whole learning compensation factor and variable amount of whole learning compensation factor when IG OFF, and then make the whole learning incomplete. Enter the initial value (whole learning compensation factor = 0.5, Variable amount of whole learning compensation factor = 0.25) to the whole learning compensation factor and variable amount of whole learning compensation factor when making a normality judgment from abnormality judgment, and then make the whole learning incomplete.
2. Ignition timing partial learning compensation: Enter the initial value (0°CA) to the compensation value of partial learning zone when IG OFF. Enter the initial value (0°CA) to the compensation value of partial learning zone when making a normality judgment from abnormality judgment.
3. AVCS control: Most timing retard learning is not complete or most timing retard learning completion is not experienced.
4. ISC feedback compensation: Do not perform the AVCS actual timing advance compensation. Make the OCV driving Duty to be the given value (9.36%).

ECM OPERATION AT DTC SETTING

Memorize the freeze frame data. (For test mode $02)

For the diagnostic procedure, refer to DTC P0011 "A" CAMSHAFT POSITION - TIMING OVER-ADVANCED OR SYSTEM PERFORMANCE (BANK 1) , Diagnostic Trouble Code (DTC) Detecting Criteria.

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

Judge NG when impedance of front oxygen (A/F) sensor is larger than the standard value by referring to the engine condition such as fuel shut-off in deceleration, etc.

Section View Of Front Oxygen (A/F) Sensor Heater. Scheme 215

ENABLE CONDITION

ENABLE CONDITION CHART

Perform diagnosis continuously in 60 seconds after starting engine.

Judge NG when the continuous time of completing the malfunction criteria below becomes more than the time needed for diagnosis (10 seconds). Judge OK and clear NG when the continuous time of not completing the malfunction criteria below becomes more than the time needed for diagnosis (10 seconds).

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 10 seconds

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

1. Front oxygen (A/F) sensor main learning correction: Not allowed to calculate
2. Correction when re-starting at high temperature: Normally minimum value 0.3 --> 0
3. Purge control: Not allowed to purge

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of heater.

The heater conducts the duty control. The output terminal voltage at ON becomes 0 V, and the output terminal voltage at OFF becomes battery voltage.

Judge NG when the terminal voltage remains to be Low.

Identifying Blinking Pattern. Scheme 216

ENABLE CONDITION CHART

Always perform diagnosis continuously.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 1 second (8 cycles).

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 1 second

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

1. Normality Judgment

Judge OK and clear the NG when all the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

1. Front oxygen (A/F) sensor activation judgment: Front oxygen (A/F) sensor full activation is not complete, or front oxygen (A/F) sensor half activation is not complete.
2. A/F main learning: Not allowed to calculate the A/F main learning compensation factor.
3. Compensation when starting the engine at high temperature: Make the MIN value to be 0 from 0.3 normally.
4. Purge control: Not allowed to purge.

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of heater.

The heater conducts the duty control. The output terminal voltage at ON becomes 0 V, and the output terminal voltage at OFF becomes battery voltage.

Judge NG when the terminal voltage remains to be High.

Identifying Blinking Pattern. Scheme 217

ENABLE CONDITION CHART

Always perform diagnosis continuously.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes 1 second (8 cycles).

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 1 second

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

1. Normality Judgment

Judge OK and clear the NG when all the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

1. Front oxygen (A/F) sensor activation judgment: Front oxygen (A/F) sensor full activation is not complete, or front oxygen (A/F) sensor half activation is not complete.
2. A/F main learning: Not allowed to calculate the A/F main learning compensation factor.
3. Compensation when starting the engine at high temperature: Make the MIN value to be 0 from 0.3 normally.
4. Purge control: Not allowed to purge.

Memorize the freeze frame data. (For test mode $02)

Detect open or short circuit of rear oxygen sensor heater.

Rear oxygen sensor heater conducted the duty control, and the output terminal voltage at ON is 0 V and the output terminal voltage at OFF is the battery voltage.

Judge NG when the terminal voltage remains to be Low.

Identifying Blinking Pattern. Scheme 218

ENABLE CONDITION CHART

Perform the diagnosis continuously in 1 second after engine starting.

1. Abnormality Judgment

Judge NG when the continuous time of completing all the malfunction criteria below becomes more than 2,560 millisecond (10 cycles).

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 2.56 seconds

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

1. Normality Judgment

Judge OK and clear the NG when all the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

Sub feedback control: Not allowed

Memorize the freeze frame data. (For test mode $02)

Detect open or short circuit of rear oxygen heater.

Rear oxygen heater conducted the duty control, and the output terminal voltage at ON is 0 V and the output terminal voltage at OFF is the battery voltage.

Judge NG when the terminal voltage remains to be High.

Identifying Blinking Pattern. Scheme 219

ENABLE CONDITION CHART

Perform the diagnosis continuously in 1 second after engine starting.

1. Abnormality Judgment

Judge NG when the continuous time of completing all the malfunction criteria below becomes more than 2,560 milliseconds (10 cycles).

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 2.56 seconds

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

1. Normality Judgment

Judge OK and clear the NG when all the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

Sub feedback control: Not allowed

Memorize the freeze frame data. (For test mode $02)

Detect the malfunction of intake manifold pressure sensor output property. Judge 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.

Identifying Intake Manifold Pressure Sensor And Connector. Scheme 220

ENABLE CONDITION CHART

Perform the diagnosis continuously after idling.

1. Abnormality Judgment

Judge NG when either Low side or High side becomes NG. Judge NG when the continuous time of completing the malfunction criteria below becomes more than 3 seconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 3 seconds

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

1. Normality Judgment

Judge OK and clear the NG when both Low side and High side become OK. Judge OK when the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

1. Intake manifold pressure sensor process: Estimate the pressure from engine load.
2. ISC feedback: Not allowed to calculate the amount of feedback.
3. Heavy fuel judgment: Not allowed to carry out the heavy judgment.
4. Fuel cut control: Not allowed to cut the over pressure charged fuel.

Memorize the freeze frame data. (For test mode $02)

Detect the malfunction of air flow sensor output property. Judge Low side NG when the air flow voltage indicates low value in spite of the driving condition that the air flow voltage might be high; otherwise, judge High side NG when the air flow voltage indicates high value in spite of the driving condition that the air flow voltage might be low. Judge air flow sensor property NG when the Low side or High side becomes NG.

Air Flow Sensor Output Voltage Graph. Scheme 221

ENABLE CONDITION CHART

Perform the diagnosis continuously after idling.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more then the time needed for diagnosis.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis

Low side 3 seconds

High side 10 seconds

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

1. Normality Judgment

Judge OK the when the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

1. Airflow meter: Engine load is normally calculated by manifold pressure and engine speed; however, calculated only by manifold pressure.
2. EVAP cone, learning (fuel): Not allowed to learn.
3. Knock compensation: Knock compensation final timing advance and retard value = knock compensation + whole learning compensation value + partial learning compensation value. At normal: knock compensation = 0°CA is fixed. At trouble: knock compensation * 0°CA is fixed. (Retard max. 12°CA at knock.) Not allowed to update the whole learning compensation factor. Not allowed to calculate the partial learning zone compensation value.
4. ISC control: Make the open loop compensation to be the given value (1 g/s). Stop calculating the throttle sensor temperature compensation. (Hold the previous value.)
5. Purge control: Not allowed to purge.

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of air flow sensor. Judge NG when out of the standard value.

Air Flow Sensor Output Voltage Graph. Scheme 222

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 0.5 seconds. Judge OK and clear the NG when the malfunction criteria below are not completed.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 0.5 seconds

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

1. Air flow meter: Engine load is normally calculated by manifold pressure and engine speed; however, calculated only by manifold pressure.
2. EVAP cone, learning (fuel): Not allowed to learn.
3. Knock compensation: Knock compensation final timing advance and retard value = knock compensation + whole learning compensation value + partial learning compensation value. At normal: knock compensation = 0°CA is fixed. At trouble: knock compensation * 0°CA is fixed. (Retard max. 12°CA at knock.) Not allowed to update the whole learning compensation factor. Not allowed to calculate the partial learning zone compensation value.
4. ISC control: Make the open loop compensation to be the given value (1 g/s). Stop calculating the throttle sensor temperature compensation. (Hold the previous value.)
5. Purge control: Not allowed to purge.

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of air flow sensor. Judge NG when out of the standard value.

Air Flow Sensor Output Voltage Graph. Scheme 223

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

Judge NG when the continuous time until completing the malfunction criteria below becomes more than 0.5 seconds. Judge OK and clear the NG when the malfunction criteria below are not completed.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 0.5 seconds

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

1. Air flow meter: Engine load is normally calculated by manifold pressure and engine speed; however, calculated only by manifold pressure.
2. EVAP cone, learning (fuel): Not allowed to learn.
3. Knock compensation: Knock compensation final timing advance and retard value = knock compensation + whole learning compensation value + partial learning compensation value. At normal: knock compensation = 0°CA is fixed. At trouble: knock compensation * 0°CA is fixed. (Retard max. 12°CA at knock.) Not allowed to update the whole learning compensation factor. Not allowed to calculate the partial learning zone compensation value.
4. ISC control: Make the open loop compensation to be the given value (1 g/s). Stop calculating the throttle sensor temperature compensation. (Hold the previous value.)
5. Purge control: Not allowed to purge.

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of intake manifold pressure sensor. Judge NG when out of the standard value.

Identifying Intake Manifold Pressure Sensor And Connector. Scheme 224

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 0.5 seconds. Judge OK and clear the NG when the malfunction criteria below are not completed.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 0.5 seconds

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

1. Intake manifold pressure sensor process: Estimate the pressure from engine load.
2. ISC feedback: Not allowed to calculate the amount of feedback.
3. Heavy fuel judgment: Not allowed to carry out the heavy judgment.
4. Fuel cut control: Not allowed to cut the over pressure charged fuel.

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of intake manifold pressure sensor. Judge NG when out of the standard value.

Identifying Intake Manifold Pressure Sensor And Connector. Scheme 225

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 0.5 seconds. Judge OK and clear the NG when the malfunction criteria below are not completed.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 0.5 seconds

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

1. Intake manifold pressure sensor process: Estimate the pressure from engine load.
2. ISC feedback: Not allowed to calculate the amount of feedback.
3. Heavy fuel judgment: Not allowed to carry out the heavy judgment.
4. Fuel cut control: Not allowed to cut the over pressure charged fuel.

Memorize the freeze frame data. (For test mode $02)

Detect the malfunction of intake air temperature sensor output property. Judge NG when the intake air temperature is not varied whereas it seemed to be varied from the viewpoint of engine condition.

Intake Air Temperature Sensor Output Voltage Graph. Scheme 226

ENABLE CONDITION CHART

Perform the diagnosis when the vehicle speed condition is completed after idling from starting the cooled engine.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 1 second.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 1 second

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

Intake air temperature sensor process: Intake air temperature is fixed at 20°C (68°F).

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of intake air temperature sensor. Judge NG when out of the standard value.

Intake Air Temperature Sensor Output Voltage Graph. Scheme 227

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 0.5 seconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 0.5 seconds

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

Intake air temperature sensor process: Intake air temperature is fixed at 20°C (68°F).

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of intake air temperature sensor. Judge NG when out of the standard value.

Intake Air Temperature Sensor Output Voltage Graph. Scheme 228

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 0.5 seconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 0.5 seconds

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

Intake air temperature sensor process: Intake air temperature is fixed at 20°C (68°F).

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of engine coolant temperature sensor. Judge NG when out of the standard value.

Engine Coolant Temperature Sensor Resistance And Temperature Graph. Scheme 229

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 0.5 seconds. Judge OK and clear the NG when the malfunction criteria below are not completed.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 0.5 seconds

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

1. Engine coolant temperature process: Fix the engine coolant temperature at 70°C (158°F).
2. ISC feedback: Calculate the target engine speed setting the engine coolant temperature to 70°C (158°F).
3. ISC learning: Not allowed to learn.
4. Heavy fuel judgment control: Not allowed to carry out the heavy judgment.
5. Air conditioner control: Not allowed to turn the air conditioner to ON.
6. Radiator fan control: Both main and sub fan are in High driving.
7. Increase compensation factor at high engine coolant temperature: Increase normally occurs with high temperature and other conditions; however, occurs with other conditions except engine coolant temperature condition.
8. AVCS control: Make the oil flow control valve driving output to be Duty=0%.
9. Tumble generator valve control: Open the tumble generator valve.

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of engine coolant temperature sensor. Judge NG when out of the standard value.

Engine Coolant Temperature Sensor Resistance And Temperature Graph. Scheme 230

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 0.5 seconds. Judge OK and clear the NG when the malfunction criteria below are not completed.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 0.5 seconds

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

1. Engine coolant temperature process: Fix the engine coolant temperature at 70°C (158°F).
2. ISC feedback: Calculate the target engine speed setting the engine coolant temperature to 70°C (158°F).
3. ISC learning: Not allowed to learn.
4. Heavy fuel judgment control: Not allowed to carry out the heavy judgment.
5. Air conditioner control: Not allowed to turn the air conditioner to ON.
6. Radiator fan control: Both main and sub fan are in High driving.
7. Increase compensation factor at high engine coolant temperature: Increase normally occurs with high temperature and other conditions; however, occurs with other conditions except engine coolant temperature condition.
8. AVCS control: Make the oil flow control valve driving output to be Duty=0%.
9. Tumble generator valve control: Open the tumble generator valve.

Memorize the freeze frame data. (For test mode $02)

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

Judge NG when out of the standard value.

Throttle/Pedal Position Sensor/Switch "A" Circuit Low Input - Circuit Diagram. Scheme 231

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

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

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 24 milliseconds

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed (Only with engine stopped)

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed (Only with engine stopped)

Stop power distribution to electronic throttle control motor. (Throttle opening is fixed to 6°.)

1. Memorize the freeze frame data. (For test mode $02)
2. Memorize the diagnostic value and trouble standard value. (For test mode $06)

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

Judge NG when out of the standard value.

Throttle/Pedal Position Sensor/Switch "A" Circuit High Input - Circuit Diagram. Scheme 232

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

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

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 24 milliseconds

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed (Only with engine stopped)

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed (Only with engine stopped)

Stop power distribution to electronic throttle control motor. (Throttle opening is fixed to 6°.)

1. Memorize the freeze frame data. (For test mode $02)
2. Memorize the diagnostic value and trouble standard value. (For test mode $06)

Detect the malfunction of engine coolant temperature output property. Judge NG when the engine coolant temperature does not rise whereas it seemed to rise from the viewpoint of the engine condition.

Engine Coolant Temperature And Resistance Graph. Scheme 233

ENABLE CONDITION CHART

Perform the diagnosis only once after engine starting.

1. Abnormality Judgment

Judge NG when the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

Timer for diagnosis after engine starting

1. Timer stop at fuel cut mode.
2. During the driving conditions (except a) above), timer count up by 64 milliseconds + TWCNT milliseconds at every 64 milliseconds.

Where, TWCNT is determined as follows

TWCNT = 0 at idle switch ON

TWCNT show on the following table at idle switch OFF.

VEHICLE SPEED SPECIFICATION

Judgment value of timer after engine starting

t = 451.1 -25.9xTi

Ti is the lowest engine coolant temperature after starting the engine.

Time Needed for Diagnosis: To be determined. (It is varied by the Min. engine coolant temperature and engine conditions such as vehicle speed and engine coolant temperature.)

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

1. Engine coolant temperature process: Fix the engine coolant temperature at 70°C (158°F).
2. ISC feedback: Calculate the target engine speed setting the engine coolant temperature to 70°C (158°F).
3. ISC learning: Not allowed to learn.
4. Heavy fuel judgment control: Not allowed to carry out the heavy judgment.
5. Air conditioner control: Not allowed to turn the air conditioner to ON.
6. Radiator fan control: Both main and sub fan are in High driving.
7. Increase compensation factor at high engine coolant temperature: Increase normally occurs with high temperature and other conditions; however, occurs with other conditions except engine coolant temperature condition.
8. AVCS control: Make the oil flow control valve driving output to be Duty=0%.
9. Tumble generator valve control: Open the tumble generator valve.

Memorize the freeze frame data. (For test mode $02)

Detect the malfunction of engine coolant temperature sensor property.

The engine coolant temperature and fuel temperature are memorized when stopping the engine at the previous time. Judge NG when the engine coolant temperature does not decrease in the case the engine coolant temperature seems to decrease after starting the engine this time.

Engine Coolant Temperature And Resistance Graph. Scheme 234

ENABLE CONDITION CHART

Perform the diagnosis once after starting the engine.

1. Abnormality Judgment

Judge NG when the cumulative time of completing the malfunction criteria below becomes more than 2.5 seconds.

Judgment Value

JUDGMENT VALUE CHART

1. Normality Judgment

Judge OK when the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 2.5 seconds

Malfunction Indicator Light Illuminations: Detect when malfunction occurs in 2 continuous driving cycles.

1. When the OK idling cycle is completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

None

Memorize the freeze frame data. (For test mode $02)

Detect the malfunction of thermostat function. Judge NG when the engine coolant temperature is lower than the estimated engine coolant temperature and the difference between them is large. Judge OK when the engine coolant temperature becomes 75°C (167°F) and the difference is small before judging NG.

Identifying Thermostat Components. Scheme 235

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 30 seconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 30 seconds

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

None

1. Memorize the freeze frame data. (For test mode $02)
2. Memorize the diagnostic value and trouble standard value. (For test mode $06)

Detect the open or short circuit of sensor.

Judge NG when the element impressed voltage is out of range, or the element current is out of range.

Air Fuel Ratio Graph. Scheme 236

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

Judge NG when the continuous time of completing any malfunction criteria below becomes more than 1 second.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 1 second

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

1. Front oxygen (A/F) sensor activation judgment: Front oxygen (A/F) sensor full activation is not complete, or front oxygen (A/F) sensor half activation is not complete.
2. A/F main learning: Not allowed to calculate the A/F main learning compensation factor.
3. Compensation when starting the engine at high temperature: Make the MIN value to be 0 from 0.3 normally
4. Purge control: Not allowed to purge.

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of sensor.

Judge NG when the element impressed voltage is out of range, or the element current is out of range.

Air Fuel Ratio Graph. Scheme 237

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

Judge NG when the continuous time of completing any malfunction criteria below becomes more than 1 second.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 1 second

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

1. Front oxygen (A/F) sensor activation judgment: Front oxygen (A/F) sensor full activation is not complete, or front oxygen (A/F) sensor half activation is not complete.
2. A/F main learning: Not allowed to calculate the A/F main learning compensation factor.
3. Compensation when starting the engine at high temperature: Make the MIN value to be 0 from 0.3 normally
4. Purge control: Not allowed to purge.

Memorize the freeze frame data. (For test mode $02)

Detect time-lag of front oxygen (A/F) sensor response. Front oxygen (A/F) sensor cover has some ventilation holes for exhaust gas. Clogged ventilation holes are diagnosed. When the holes are clogged, the A/F output variation becomes slow comparing with the actual A/F variation because oxygen which reaches the zirconia layer is insufficient. Therefore, if the cover has clogged holes, the rich to lean judgment in ECM is delayed when the change from rich to lean is caused.

Identifying Front Oxygen (A/F) Sensor Components. Scheme 238

Air Fuel Ratio Graph. Scheme 239

ENABLE CONDITION CHART

Perform diagnosis only once at a constant speed of 10 to 120 km/h (6.21 to 74.6 MPH) in 120 seconds after starting the engine.

Integrate the difference of faf in every 128 milliseconds and difference of lambda value.

After integrate 1,640 times (210 seconds), calculate the diagnosis value.

Judge NG when the malfunction criteria below are completed. Judge OK and clear NG when the malfunction criteria below are not completed.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 210 seconds

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

1. Front oxygen (A/F) sensor main learning correction: Not allowed to calculate.
2. Correction when re-starting at high temperature: Normally minimum value 0.3 --> 0.
3. Purge control: Not allowed to purge.

1. Memorize the freeze frame data. (For test mode $02)
2. Memorize the diagnostic value and trouble standard value. (For test mode $06)

Detect the open circuit of sensor.

Judge NG when the element impedance is large.

Air Fuel Ratio Graph. Scheme 240

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 2 seconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 2 seconds

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

1. Front oxygen (A/F) sensor activation judgment: Front oxygen (A/F) sensor full activation is not complete, or front oxygen (A/F) sensor half activation is not complete.
2. A/F main learning: Not allowed to calculate the A/F main learning compensation factor.
3. Compensation when starting the engine at high temperature: Make the MIN value to be 0 from 0.3 normally
4. Purge control: Not allowed to purge.

Memorize the freeze frame data. (For test mode $02)

Detect the malfunction of rear oxygen sensor open or short circuit. Judge NG when the rear oxygen sensor voltage may be abnormal from rear oxygen sensor voltage value with considering the conditions such as intake air amount, engine coolant temperature, main feedback control.

Air Fuel Ratio Graph. Scheme 241

ENABLE CONDITION (USED ONLY FOR MALFUNCTION JUDGMENT)

ENABLE CONDITION CHART

Perform the diagnosis once after starting the engine.

1. Abnormality Judgment

Judge NG when the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 200 seconds

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

1. Normality Judgment

Judge OK when the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

Sub feedback control: Not allowed

Memorize the freeze frame data. (For test mode $02)

Detect the malfunction of rear oxygen sensor open or short circuit. Judge NG when the rear oxygen sensor voltage may be abnormal with considering the conditions such as intake air amount, engine coolant temperature, main feedback control.

Air Fuel Ratio Graph. Scheme 242

ENABLE CONDITION CHART

Perform the diagnosis once after starting the engine.

1. Abnormality Judgment

Judge NG when the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 200 seconds

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

1. Normality Judgment

Judge OK when the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

Sub feedback control: Not allowed

Memorize the freeze frame data. (For test mode $02)

Detect the slow response of rear oxygen sensor.

Judge NG when the Rich --> Lean response diagnosis or Lean --> Rich response diagnosis is NG and judge

OK when both response diagnoses are OK.

[Rich --> Lean diagnosis response]

1. When the measured response time is larger than a threshold, since the A/F ratio is rich, the response time of the output change of O 2 sensor when changing from Rich to Lean is measured, and it judges with NG, and when small, it judges with OK.
2. When O 2 sensor voltage at the time of a fuel shut-off in deceleration return is large (rich), it judges with NG.

[Lean --> Rich diagnosis response]

1. The response time of output change of O2 sensor when an A/F ratio changes from Lean to Rich is measured, and it is referred to as NG when the measured response time is larger than a threshold.
2. It is referred to as NG when O2 sensor voltage after recovery of fuel shut-off in deceleration is small and still small.

1. Diagnostic Method

Measure the response time of the output change of the oxygen sensor when the A/F ratio changes from rich to lean. And Judge NG when the measured response time is larger than the threshold value.

Air Fuel Ratio Graph. Scheme 243

1. Rich --> Lean response diagnosis

ENABLE CONDITION CHART

Perform the diagnosis only once when fuel shut-off in deceleration after rapid acceleration. (Pay attention to oxygen sensor voltage for the timing of deceleration.)

When the oxygen sensor output voltage changes from 0.55 V (rich) to 0.25 V (lean), calculate the Min. value of response time regarded as judgment value while the output varies from 0.5 V to 0.3 V.

Rear Oxygen Sensor Output Voltage Graph. Scheme 244

1. Abnormality Judgment

1. Judge NG when the judgment value is larger than the threshold value after fuel shut-off in deceleration. Response time (Diagnosis value) > Threshold value --> Abnormal NOTE: Variation time of rear oxygen sensor output voltage is short during fuel shut-off in deceleration. Carry out the NG judgment only after the fuel shut-off in deceleration. As for OK judgment, without the condition of fuel shut-off in deceleration, judge OK if the value is below the threshold value. Judge NG when the malfunction criteria below are completed in 2 seconds after the recovery of fuel shut-off in deceleration which requires 6 seconds or more.
2. Judge NG when the O2 sensor voltage after recovery of fuel shut-off in deceleration is large. Judge NG when fuel shut-off in deceleration is also long (6 sec. or more), and although carried out the fuel shut-off in deceleration cut return, when O2 sensor voltage is large (more than 0.55 V).

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: Once

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

1. Normality Judgement

1. Judge Normal when the response time (diagnostic value) is smaller than threshold (judgment value) when changing to lean since O2 sensor voltage.
2. A normal judging is not carried out.

Judgment Value

Judge OK when the following standards value are completed.

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

Sub feedback control: Not allowed

1. Memorize the freeze frame data. (For test mode $02)
2. Memorize the diagnostic value and trouble standard value. (For test mode $06)

1. Lean --> Rich response diagnosis

ENABLE CONDITION CHART

Perform the diagnosis only once when fuel shut-off in deceleration after rapid acceleration. (Pay attention to oxygen sensor voltage for the timing of deceleration.)

When the oxygen sensor output voltage changes from 0.25 V (lean) to 0.55 V (rich), calculate the Min. value of response time regarded as judgment value while the output varies from 0.3 V to 0.5 V.

Rear Oxygen Sensor Output Voltage Graph. Scheme 245

1. Abnormality Judgment

1. Judge NG when the judgment value is larger than the threshold value after recovery of fuel shut-off in deceleration. Response time (Diagnosis value) > Threshold value --> Abnormal
2. Judge NG when the O2 sensor voltage after recovery of fuel shut-off in deceleration is small.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: Once

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

1. Normality Judgement

1. Judge Normal when the response time (diagnostic value) is smaller than threshold (judgment value) when changing to lean since O2 sensor voltage. Response Time (diagnosis value) < Threshold value --> Normal
2. A normal judging is not carried out.

Judgment Value

Judge OK when the following standards value are completed.

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

Sub feedback control: Not allowed

1. Memorize the freeze frame data. (For test mode $02)
2. Memorize the diagnostic value and trouble standard value. (For test mode $06)

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

Scheme 246

1. Fuel System Diagnosis (Scheme 246): Fuel System Too Lean (Bank 1) - System Diagram
2. 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.

ENABLE CONDITION CHART

Map 5

ENGINE SPEED CHART

Perform the diagnosis continuously at a constant 60 km/h (37.3 MPH).

1. Abnormality Judgment

Judge that the fuel system malfunction occurs when the time during completing the malfunction criteria below continues 30 seconds or more by comparing the diagnosed value (fsobd) with threshold value.

Judgment Value

JUDGMENT VALUE CHART

Map 4 Threshold value for fuel system malfunction criteria

THRESHOLD VALUE FOR FUEL SYSTEM MALFUNCTION CRITERIA

Time Needed for Diagnosis: 10 seconds x 3 times

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

1. Normality Judgment

Judge OK when the malfunction criteria below are continued for 10 seconds.

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When OK with similar drive in 3 driving cycles.
2. When "Clear Memory" was performed

Rich side malfunction

1. Purge control solenoid valve control: Not allowed to purge.
2. Heavy fuel judgment control: Not allowed to carry out the heavy judgment.

Memorize the freeze frame data. (For test mode $02)

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

Scheme 247

1. Fuel System Diagnosis (Scheme 247): Fuel System Too Rich (Bank 1) - System Diagram
2. 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.

ENABLE CONDITION CHART

Map 5

ENGINE SPEED CHART

Perform the diagnosis continuously at a constant 60 km/h (37.3 MPH).

1. Abnormality Judgment

Judge that the fuel system malfunction occurs when the time during completing the malfunction criteria below continues 30 seconds or more by comparing the diagnosed value (fsobd) with threshold value.

Judgment Value

JUDGMENT VALUE CHART

Map 4 Threshold value for fuel system malfunction criteria for System E

THRESHOLD VALUE FOR FUEL SYSTEM MALFUNCTION CRITERIA FOR SYSTEM

Time Needed for Diagnosis: 10 seconds x 3 times

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

1. Normality Judgment

Judge OK when the malfunction criteria below are continued for 10 seconds.

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When OK with similar drive in 3 drive cycles.
2. When "Clear Memory" was performed

Rich side malfunction

1. Purge control solenoid valve control: Not allowed to purge.
2. Heavy fuel judgment control: Not allowed to carry out the heavy judgment.

Memorize the freeze frame data. (For test mode $02)

Detect the malfunction of fuel temperature sensor output property. Perform the diagnosis in two methods; namely, drift diagnosis and stuck diagnosis. Judge NG when either of them results in NG, and judge OK when both of them result in OK.

1. Drift Diagnosis

Normally fuel temperature is lower than engine coolant temperature. When the fuel temperature becomes higher than the engine coolant temperature, the range is considered to be shifted, and make an NG judgment.

Temperature And Resistance Graph. Scheme 248

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 120 seconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 120 seconds

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

1. Normality Judgment

Judge OK when the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

1. Stuck Diagnosis

If the fuel temperature which might rise along with the engine idling (the cumulative amount of intake air after engine starting is large) does not increase, the engine is considered to be stuck and make an NG judgment.

ENABLE CONDITION CHART

Perform the diagnosis continuously in 20 seconds or more after starting the engine.

1. Abnormality Judgment

Judge NG when the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: To be determined.

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

1. Normality Judgment

Judge OK when the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

None

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of fuel temperature sensor. Judge NG when out of the standard value.

Temperature And Resistance Graph. Scheme 249

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 2.5 seconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 2.5 seconds

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

None

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of fuel temperature sensor. Judge NG when out of the standard value.

Temperature And Resistance Graph. Scheme 250

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 2.5 seconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 2.5 seconds

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

None

Memorize the freeze frame data. (For test mode $02)

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

Judge NG when out of the standard value.

Throttle/Pedal Position Sensor/Switch "B" Circuit Low Input - Circuit Diagram. Scheme 251

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

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

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 24 milliseconds

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed (Only with engine stopped)

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed (Only with engine stopped)

Stop power distribution to electronic throttle control motor. (Throttle opening is fixed to 6°.)

1. Memorize the freeze frame data. (For test mode $02)
2. Memorize the diagnostic value and trouble standard value. (For test mode $06)

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

Judge NG when out of the standard value.

Throttle/Pedal Position Sensor/Switch "B" Circuit High Input - Circuit Diagram. Scheme 252

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

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

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 24 milliseconds

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed (Only with engine stopped)

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed (Only with engine stopped)

Stop power distribution to electronic throttle control motor. (Throttle opening is fixed to 6°.)

1. Memorize the freeze frame data. (For test mode $02)
2. Memorize the diagnostic value and trouble standard value. (For test mode $06)

Detect the malfunction of fuel pump control unit. Judge NG when the NG signal is sent through a diagnostic line coming from the fuel pump control unit. Fuel pump control unit detects the open or short circuit malfunction for each line, and then sends NG signals if one of them is found NG.

Fuel Pump Primary - Circuit Diagram. Scheme 253

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 2.5 seconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 2.5 seconds

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

OFF setting may be needed depending on the NG portion.

Memorize the freeze frame data. (For test mode $02)

Detect the malfunction of wastegate control solenoid valve function. Judge NG when becoming high waste-gate pressure.

Turbo/Super Charger Wastegate Solenoid "A" Performance Diagram. Scheme 254

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 2 seconds.

Judgment Value

JUDGMENT VALUE CHART

Map 10

ABNORMAL THRESHOLD CHART

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 1 second

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

None

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of wastegate control solenoid valve. Judge NG when the terminal output voltage remains Low during outputting the duty signal.

Turbo/Super Charger Wastegate Solenoid "A" Low Performance Diagram. Scheme 255

ENABLE CONDITION CHART

Perform the diagnosis continuously after engine starts.

1. Abnormality Judgment

Judge NG when the continuous time until completing the malfunction criteria below becomes more than 655 milliseconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 655 milliseconds

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

None

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of wastegate control solenoid valve. Judge NG when the terminal output voltage remains Low or High during outputting the duty signal.

Turbo/Super Charger Wastegate Solenoid "A" High Performance Diagram. Scheme 256

ENABLE CONDITION CHART

Perform the diagnosis continuously after engine starts.

1. Abnormality Judgment

Judge NG when the continuous time until completing the malfunction criteria below becomes more than 655 milliseconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 655 milliseconds

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

None

Memorize the freeze frame data. (For test mode $02)

Detect whether the misfire occurred or not. (Revolution fluctuation method) Monitoring the misfire which influences exhaust deterioration (1.5 times of FTP) and catalyst damage is made obligatory by the law. Misfire affecting these two has three 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; AT: None) 360° Interval Difference Method (whole range) 720° Interval Difference Method (3,000 rpm or less)
2. Every time misfire: FTP 1.5 times misfire, Catalyst damage misfire 360° Interval Difference Method

ENABLE CONDITION CHART

Map3

Vehicle Speed < 64.4 km/h (40 MPH)

VEHICLE SPEED CHART

Vehicle Speed > or = 64.4 km/h (40 MPH)

VEHICLE SPEED CHART

1. Detecting misfire is able to be carried out in the condition between idling and high revolution; however, idling condition is better for detecting misfire from the viewpoint of engine load and damage.
2. Perform the diagnosis continuously.

Diagnostic Method Description. Scheme 257

When the misfire occurred, the engine speed is decreased 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 the misfire occurs or not comparing the calculated result with judgment value. Counting the number of misfire up, and if the misfire ratio is higher during 1,000 rev. or 200 rev., judge NG for the corresponding cylinder.

Calculate the diagnostic value (from crankshaft position speed)

> Misfire detection every single ignition (Compare diagnostic value with judgment value)

1. 180° Interval Difference Method
2. 360° Interval Difference Method
3. 720° Interval Difference Method

> NG judgment (Judge misfire occurrence required by the law) (Compare number of misfire with judgment)

1. FTP1.5 times misfire NG judgment
2. Catalyst damage misfire NG judgment

As the following figure, pick out a random 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, and the following is the same.

Identifying Crankshaft Position Speed Chart. Scheme 258

1. 180° Interval Difference Method

Diagnosis value domg 180 = (omg -1 omg 0) - (omg 7 - omg 1)/6 Judge misfire occurs in the following cases.

Scheme 259

1. domg 180 > judgment value of positive side
2. domg 180 < or = judgment value of negative side (judgment value before 180°CA) (Scheme 259): Judgment Value Graph

1. 360° Interval Difference Method

Diagnosis value domg 360 = (omg 1 - omg 0) - (omg 4 - omg 3)

Misfire judgment domg 360 > judgment value --> Misfire occurs

Judgment Value Graph. Scheme 260

1. 720° Interval Difference Method

Diagnosis value domg 720 = (omg 1 - omg 0) - (omg 7 - omg 6)

Misfire judgment domg 720 > judgment value --> Misfire occurs

Judgment Value Graph. Scheme 261

1. FTP 1.5 times misfire (Misfire occurrence level affecting exhaust gas)

Judgment Value (Judge that malfunction occurs when the misfire ratio is high in 1,000 engine revs.)

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 1,000 engine revs.

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

1. Catalyst damage misfire (Misfire occurrence level damaging catalyst)

Judgment Value (Judge that malfunction occurs when the misfire ratio is high in 200 engine revs. (400 ignitions))

JUDGMENT VALUE CHART

Map 1 Fault criteria threshold for misfire which would result in catalyst damage

Engine Speed Chart. Scheme 262

These figures mean the misfire ratio (%) in 400 ignitions; for example, 22.5 (%) means 400 (ignition) x 22.5 (%) = 90 (ignition) or more, so this case is judged misfire.

Time Needed for Diagnosis: 200 engine revs.

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

None

Memorize the freeze frame data. (For test mode $02)

For the diagnostic procedure, refer to DTC P0301 CYLINDER 1 MISFIRE DETECTED , Diagnostic Trouble Code (DTC) Detecting Criteria.

For the diagnostic procedure, refer to DTC P0301 CYLINDER 1 MISFIRE DETECTED , Diagnostic Trouble Code (DTC) Detecting Criteria.

For the diagnostic procedure, refer to DTC P0301 CYLINDER 1 MISFIRE DETECTED , Diagnostic Trouble Code (DTC) Detecting Criteria.

Detect the open or short circuit of the knock sensor. Judge NG when out of the standard value.

Identifying Knock Sensor Components Location. Scheme 263

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 1 second.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 1 second

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

Knock compensation

1. Knock compensation final timing advance and retard value = knock compensation + whole learning compensation value + partial learning compensation value.
2. At normal: knock compensation = 0°CA is fixed.
3. At trouble: knock compensation = -5°CA. (Retard 5°CA.)
4. Not allowed to update the whole learning compensation factor.
5. Not allowed to calculate the partial learning zone compensation value.

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of the knock sensor. Judge NG when out of the standard value.

Identifying Knock Sensor Components Location. Scheme 264

ENABLE CONDITION CHART

Always perform diagnosis continuously.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 1 second.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 1 second

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

Knock compensation

1. Knock compensation final timing advance and retard value = knock compensation + whole learning compensation value + partial learning compensation value.
2. At normal: knock compensation = 0°CA is fixed.
3. At trouble: knock compensation = -5°CA. (Retard 5°CA.)
4. Not allowed to update the whole learning compensation factor.
5. Not allowed to calculate the partial learning zone compensation value.

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of crankshaft position sensor. Judge NG when the crankshaft signal does not input regardless of turning the starter.

Crankshaft Signal Chart. Scheme 265

Identifying Signal Waveform. Scheme 266

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 3 seconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 3 seconds

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

1. Normality Judgment

Judge OK when the continuous time of completing the malfunction criteria below becomes more than 3 seconds.

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

None

Memorize the freeze frame data. (For test mode $02)

Detect the malfunction of crankshaft position sensor output property. Judge NG when the number of crankshaft signal every 1 revolution becomes abnormal.

Crankshaft Signal Chart. Scheme 267

Identifying Signal Waveform. Scheme 268

ENABLE CONDITION CHART

Perform the diagnosis continuously under 3,000 rpm engine speed.

1. Abnormality Judgment

Judge NG when all the malfunction criteria below are completed more than 10 times in a row.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 10 engine revs.

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

None

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of camshaft position sensor. Judge NG when the number of camshaft signal remains to be abnormal.

Crankshaft Signal Chart. Scheme 269

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

1. Abnormality Judgment 1

The camshaft signal normally enters three times by two rev. of engine speed; however, judge NG when the camshaft signal does not enter three times continuously.

Judge NG when the malfunction criteria below are completed more than 100 rev. of engine speed. Judge OK and clear NG when the malfunction criteria below are not completed.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 100 rev.

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

1. Abnormality Judgment 2

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 3 seconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 3 seconds

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

1. Ignition timing whole learning compensation: Enter the initial value (whole learning compensation factor = 0.5, Variable amount of whole learning compensation factor = 0.25) to the whole learning compensation factor and variable amount of whole learning compensation factor when IG OFF, and then make the whole learning incomplete. Enter the initial value (whole learning compensation factor = 0.5, Variable amount of whole learning compensation factor = 0.25) to the whole learning compensation factor and variable amount of whole learning compensation factor when making a normality judgment from abnormality judgment, and then make the whole learning incomplete.
2. Ignition timing partial learning compensation: Enter the initial value (0°CA) to the compensation value of partial learning zone when IG OFF. Enter the initial value (0°CA) to the compensation value of partial learning zone when making a normality judgment from abnormality judgment.
3. AVCS control: Most timing retard learning is not complete or most timing retard learning completion is not experienced.
4. ISC feedback compensation: Do not perform the AVCS actual timing advance compensation. Make the OCV driving Duty to be the given value (9.36%).

Memorize the freeze frame data. (For test mode $02)

For diagnostic procedure, refer to DTC P0340 CAMSHAFT POSITION SENSOR "A" CIRCUIT (BANK 1 OR SINGLE SENSOR) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Detect the deterioration of catalyst function.

Though the rear 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 rear oxygen sensor output and comparing it with the front A/F sensor output.

Identifying Oxygen Sensor Waveform. Scheme 270

ENABLE CONDITION CHART

1. Map 2

Add the following value every 512 milliseconds.

Catalyst warm-up counter < 8,000

INTAKE AIR SPECIFICATIONS

Catalyst warm-up counter > 8,000

INTAKE AIR SPECIFICATIONS

Perform the diagnosis once at the constant vehicle speed from 80 to 100 km/h (49.7 to 62.1 MPH).

After the malfunction criteria are completed, calculate the output fluctuation value of front oxygen (A/F) sensor and output fluctuation value of rear oxygen sensor.

Calculate the diagnosis value when the front oxygen (A/F) sensor output fluctuation value more than specified value.

Regard the A/F response properties and diagnosis value as parameters for judgment value.

Judge NG when the malfunction criteria below are completed, and judge OK when they are not completed.

Judgment Value

JUDGMENT VALUE CHART

Map 3

DIAGNOSIS PROCEDURE

Time Needed for Diagnosis: 55 seconds

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

None

1. Memorize the freeze frame data. (For test mode $02)
2. Memorize the diagnostic value and trouble standard value. (For test mode $06)

Perform the diagnosis of leakage of fuels system and valve functions.

Evaporative Emission Control System Leak Detected (Small Leak) - System Diagram. Scheme 271

In this system diagnosis, checking for leakage and valve function is conducted by changing the fuel tank pressure and monitoring the pressure change using the fuel tank pressure sensor. 0.04 inch diagnosis is performed in the order of mode Z, mode A, mode B, mode C, mode D and mode E, and 0.02 inch diagnosis is performed in the order of mode Y, mode A, mode B, mode C, mode D and mode E.

Scheme 272

1. 0.04-inch Diagnosis (Scheme 272): Evaporative Emission Control System - Communication Diagram

MODE DESCRIPTION CHART

Scheme 273

1. 0.02-inch Diagnosis (Scheme 273): Evaporative Emission Control System - Communication Diagram

MODE DESCRIPTION CHART

1. Mode Table for Evaporative Emission Control System Diagnosis

0.04-inch Diagnosis

EVAPORATIVE EMISSION CONTROL SYSTEM CHART

0.02-inch Diagnosis

EVAPORATIVE EMISSION CONTROL SYSTEM CHART

COMPONENT DESCRIPTION

1. Pressure Control Solenoid Valve

PCV controls the fuel tank pressure to be equal to the atmospheric air pressure.

Normally, the solenoid is set to OFF. And the valve opens and closes mechanically in accordance with the pressure difference between tank and atmospheric air, or tank and canister.

The solenoid which is set to ON forces to open the valve.

Pressure Control Solenoid Valve Operation Diagram. Scheme 274

1. Valve Operation and Air Flow

In the figure below, divided by the diaphragm, the part above X is charged with atmospheric air pressure, and the part below X is charged with tank pressure. Also, the part above Y is charged with tank pressure, and the part below Y is charged with canister pressure.

If the atmospheric air pressure port is A, tank pressure port is B, and canister pressure port is C, the air flows according to pressure difference from each port as shown in the table below.

Pressure Control Solenoid Valve Operation Diagram. Scheme 275

PRESSURE FLOW CHART

Scheme 276

Scheme 277

Scheme 278

Scheme 279

Scheme 280

Scheme 281

1. When A < B (Solenoid OFF) (Scheme 276): Pressure Control Solenoid Valve Operation Diagram
2. When B < C (Solenoid OFF) (Scheme 277): Pressure Control Solenoid Valve Operation Diagram
3. When Solenoid is ON (Scheme 278): Pressure Control Solenoid Valve Operation Diagram
4. CCV (Scheme 279): CCV Operation Diagram
5. Tank Pressure Switching Solenoid One of the atmospheric pressure switching solenoid valves is connected to fuel tank pressure sensor and the other is released to atmosphere. The passage to fuel tank pressure sensor is usually released to atmosphere because the solenoid is set to OFF, but the solenoid which is set to ON closes the passage open to atmosphere. (Scheme 280): Tank Pressure Switching Solenoid Operation Diagram
6. Purpose of this solenoid Fuel tank pressure sensor detects the difference between the atmospheric air pressure and the tank pressure and the ECM monitors the pressure difference. Even if the tank pressure is constant, the atmospheric air pressure varies depending on the driving height, and the pressure signal transmitted to ECM will change. (Scheme 281): Tank Pressure Switching Solenoid Operation Diagram

Especially, in the small leakage [0.5 mm (0.02 in)], minute change in the tank pressure has to be detected. This diagnosis period is long (approx. 29 seconds). And if the driving height changes during the diagnosis, the atmospheric air pressure changes. In this case, it becomes difficult to precisely detect the tank pressure variation, causing erroneous diagnosis. Therefore, using the atmospheric pressure switching solenoid, atmospheric air is sealed between the fuel tank pressure sensor and atmospheric pressure switching solenoid, maintaining the air pressure constant and enabling the detection of minute variation of tank pressure.

Tank Pressure Switching Solenoid Operation Diagram. Scheme 282

Note. ECM also has the atmospheric air pressure sensor, and always monitors atmospheric air. However, as the monitoring range is large, that is, 53 to 107 kPa (400 to 800 mmHg, 16 to 32 inHg) it is not suitable for detection of minute pressure variation. In the case of small leakage diagnosis, the tank pressure variation is very small, that is, 0.13 to 0.27 kPa (1 to 2 mmHg, 0.04 to 0.08 inHg) and the fuel tank pressure sensor is equipped.

0.04-inch Diagnosis

ENABLE CONDITION CHART

0.02-inch Diagnosis

ENABLE CONDITION CHART

1. 0.04-inch Diagnosis

1. Perform the diagnosis only once in more than 856 seconds after the engine start at the constant driving speed of 32 km/h (20 MPH) or more.
2. Pay attention to the fuel temperature and fuel level.

1. 0.02-inch Diagnosis

1. Perform diagnosis in more than 335 seconds after engine start at the constant speed of 68 km/h (42 MPH) or more, and then terminate the diagnosis when judged OK or NG.
2. If not judged OK or NG, repeat the diagnosis until judged OK or NG.
3. Pay attention to the fuel temperature and fuel level.

1. MODE Z (Purge control solenoid valve open malfunction diagnosis)

DTC P0457

1. Purpose of Mode Z

When performing the leakage diagnosis of EVAP system, CPC has to operate normally. Therefore, mode Z is used to diagnose the CPC open fixation.

If the CPC open fixation trouble is detected, the EVAP system leakage diagnosis is cancelled.

EVAP System - System Diagram. Scheme 283

EVAP System Operation Diagram. Scheme 284

1. Diagnostic method

CPC open fixation diagnosis is performed in mode Z as shown in the figure below.

EVAP System - System Diagram. Scheme 285

Scheme 286

1. Normal Operation (Scheme 286): Normal Operation Chart

1. evptez - evptezha < or = 0.4 kPa (3.0 mmHg, 0.12 inHg)
2. evptezini - evptezha < or = 0.71 kPa (5.3 mmHg, 0.21 inHg) Judge normal when both of above calculations are completed.

Scheme 287

1. Purge Control Solenoid Valve Open Fixation (Scheme 287): Purge Control Solenoid Valve Open Fixation Graph
2. evptez - evptezha > 0.6 kPa (4.5 mmHg, 0.18 inHg)
3. evptezini < or = 0.91 kPa (6.8 mmHg, 0.27 inHg)
4. No fuel rolling of above 32(0.79 US gal, 0.67 Imp gal) for more than 35 seconds. Judge normal when both of above calculations are completed.

Normality Judgment

Judge OK and change to Mode A when the criteria below are completed in 3 seconds after Mode Z started.

Judgment Value

JUDGMENT VALUE CHART

1. Diagnosing function of CPC [P0457]

CPC functional diagnosis is performed by monitoring the tank pressure in Mode Z.

Normality Judgment

Make OK judgment in 3 seconds after Mode Z started, and change to Mode A if OK.

Both diagnostic method and judgment value are the same as PCV normality judgment.

Abnormality Judgment

If OK judgment cannot be made, extend Mode Z 16 seconds more, and judge NG when all the criteria below are completed in 16 seconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 16 seconds

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

Finish the EVAP. diagnosis when making NG judgment for purge control solenoid valve open fixation. Cancel the EVAP. diagnosis when the OK/NG judgment for purge control solenoid valve open fixation cannot be made in Mode Z.

1. Leak Diagnosis DTC P0442 DTC P0456 DTC P0457
2. Diagnostic method
3. The diagnostic method consists of creating a sealed vacuum in the fuel tank and then determining the presence of leakage from the speed at which the tank internal pressure returns to atmospheric pressure.
4. The diagnosis is divided into the following five phases.

Mode A; (Estimation of evaporation gas yield)

Calculate the tank pressure variation amount (P1). After calculating P1, change to Mode B.

Mode B; (Seal negative pressure)

Introduce the negative pressure in the intake manifold to the tank.

Approx. 0 --> -1.4 kPa (0 --> -10.5 mmHg, 0 --> -0.41 inHg) (0.04-in diagnosis)

Approx. 0 --> -3.05 kPa (0 --> -22.9 mmHg, 0 --> -0.9 inHg) (0.02-in diagnosis)

When the pressure above (desired negative pressure) is reached, Mode C is entered. In this case, if the tank pressure does not become the desired negative pressure, judge that there is a large leakage in the system.

Judge NG when the malfunction criteria below is completed.

Finish the EVAP. diagnosis when judging large leak (10 seconds or 25 seconds) in 0.04-inch diagnosis. Cancel the diagnosis (10 to 20 seconds) in 0.02-inch diagnosis.

Abnormality Judgment

Judge NG (large leak) when the criteria below are completed in the specified time.

Judgment Value

JUDGMENT VALUE CHART

Mode C; (Check increasing pressure)

Stop the introduction of negative pressure. (Wait until returning target pressure.)

When returning to target pressure, move to Mode D.

Judge immediate OK and change to Mode E when it does not return in spite of spending the specified time.

PRESSURE CHART

Mode D; (Measurement of negative pressure changes)

Monitor the tank pressure variation in Mode D. In this case, the tank pressure increases, that is, the pressure becomes as high as the atmospheric air pressure, because evaporator is generated. However, if any leakage exists, the pressure increases additionally in proportion to this leakage. The pressure variation of this tank is P2.

After calculating P2, perform small leak diagnosis and change to Mode E if normal. Complete EVAP. diagnosis if abnormal.

1. After Mode D

Assigning P1 and P2, which are tank variations measured in Mode A and Mode B, to the formula below, judge the small leakage of the system. If the measured judgment value exceeds the threshold value, it is judged to be malfunction.

1. 0.04-inch Diagnosis

Abnormality Judgment

Judge NG when the criteria below are completed and judge OK when not completed.

Judgment Value

JUDGMENT VALUE CHART

Map 7 Limit of malfunction criteria for 0.04-inch leak as EVAP. diagnosis.

FUEL TEMPERATURE CHART

1. 0.02-inch Diagnosis

Abnormality Judgment

Judge NG when the criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

Map 8 Limit of malfunction criteria for 0.02-inch leak as EVAP. diagnosis.

FUEL TEMPERATURE CHART

Normality Judgment

Judge OK when the criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

Map 9

FUEL TEMPERATURE CHART

If not judged OK or NG, repeat the diagnosis until judged OK or NG.

EVAP System - System Diagram. Scheme 288

Purge Control Solenoid Valve Open/Close Position Graph. Scheme 289

Time Needed for Diagnosis

0.04-inch: 50 - 70 seconds

0.02-inch: 90 - 105 seconds

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

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

Atmospheric purge solenoid function malfunction; Open the pressure control solenoid valve.

1. Memorize the freeze frame data. (For test mode $02)
2. Memorize the diagnostic value and trouble standard value. (For test mode $06)

Detect the open or short circuit of drain valve.

Judge NG when the ECM output level is different from the actual terminal level.

Identifying ECM Components Location. Scheme 290

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 2.5 seconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 2.5 seconds

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

PCV control: Open the PCV solenoid.

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of drain valve.

Judge NG when the ECM output level is different from the actual terminal level.

Identifying ECM Components Location. Scheme 291

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 2.5 seconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 2.5 seconds

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

PCV control: Open the PCV solenoid.

Memorize the freeze frame data. (For test mode $02)

Detect the tank pressure sensor output property abnormality.

Judge NG when there is no pressure variation, which should exist in the tank, considering the engine status.

Tank Pressure Sensor And Tank Pressure Sensor Output Graph. Scheme 292

ENABLE CONDITION CHART

1. Perform the diagnosis continuously in 60 seconds or more after starting the engine.
2. Be sure to check the fuel level and fuel temperature.

1. Abnormality Judgment

Judge NG when the malfunction criteria below is completed.

Judgment Value

JUDGMENT VALUE CHART

If the fuel level (Max. - Min.) in every 60 seconds is less than 2 6, extend 60 seconds more and make judgment with the Max. and Min. fuel level in 120 seconds.

If the difference did not appear though the time extended, extend the time (180,240, 300 seconds) and continue the judgment.

Diagnosis counter will count up when the difference of fuel level (Max. - Min.) is more than 2 G.

Time Needed for Diagnosis: 1 second x 16 times or more

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in two continuous drive cycles.

1. Normality Judgment

Judge OK when the malfunction criteria below is completed.

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

Purge control solenoid valve control: Purge fixation mode is prohibited.

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of the fuel tank pressure sensor.

Judge NG when out of the standard value.

Tank Pressure Sensor And Tank Pressure Sensor Output Graph. Scheme 293

ENABLE CONDITION (USED WITH HIGH SIDE NORMAL/ABNORMAL JUDGMENT)

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 15 seconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 15 seconds

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

1. Normality Judgment

Judge OK when the malfunction criteria below is completed.

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

Purge control solenoid valve control: Purge fixation mode is prohibited.

Memorize the freeze frame data. (For test mode $02)

Detect the breaking/shortage of the fuel tank pressure sensor.

Judge NG when out of the standard value.

Tank Pressure Sensor And Tank Pressure Sensor Output Graph. Scheme 294

ENABLE CONDITION CHART

Perform the diagnosis when purging.

1. Abnormality Judgment

Judge NG when the continuous time until completing the malfunction criteria below becomes more than 15 seconds.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 15 seconds

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

1. Normality Judgment

Judge OK when the malfunction criteria below is completed.

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

Purge control solenoid valve control: Purge fixation mode is prohibited.

Memorize the freeze frame data. (For test mode $02)

For detecting conditions, refer to DTC P0442 EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECTED (SMALL LEAK) , Diagnostic Trouble Code (DTC) Detecting Criteria.

For detecting conditions, refer to DTC P0442 EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECTED (SMALL LEAK) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Detect open or short circuit of purge control solenoid valve.

Judge NG when ECM output level is different from actual terminal level.

Purge Control Solenoid Valve Diagram. Scheme 295

ENABLE CONDITION CHART

Always perform the diagnosis after starting the engine.

1. Abnormality Judgment

Judge NG when the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 2.5 seconds

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

1. Normality Judgment

Judge OK and clear NG when the malfunction criterion below is completed.

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

None

Memorize the freeze frame data. (For test mode $02)

Detect open or short circuit of purge control solenoid valve.

Judge NG when ECM output level is different from actual terminal level.

Purge Control Solenoid Valve Diagram. Scheme 296

ENABLE CONDITION CHART

Always perform the diagnosis after starting the engine.

1. Abnormality Judgment

Judge NG when the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 2.5 seconds

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

1. Normality Judgment

Judge OK and clear NG when the malfunction criterion below is completed.

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

None

Memorize the freeze frame data. (For test mode $02)

Detect the malfunction of fuel level sensor output property.

Judge NG when the fuel level does not vary whereas it seemed to vary be in a usual driving speed.

Fuel Level Sensor Performance Graph. Scheme 297

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

1. Abnormality Judgment

Judge NG when the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: To be determined.

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

None

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of fuel level sensor. Judge NG when out of the standard value.

Fuel Level Sensor Circuit Low Input - Circuit Diagram. Scheme 298

ENABLE CONDITION CHART

Always perform the diagnosis continuously

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than the time needed for diagnosis (2.5 seconds).

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 2.5 seconds

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

None

Memorize the freeze frame data. (For test mode $02)

Detect the open or short circuit of fuel level sensor. Judge NG when out of the standard value.

Fuel Level Sensor Circuit High Input - Circuit Diagram. Scheme 299

ENABLE CONDITION CHART

Always perform the diagnosis continuously.

1. Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than the time needed for diagnosis (one second).

Judgment Value

JUDGMENT VALUE CHART

Time Needed for Diagnosis: 1 second

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

1. Normality Judgment

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

Judgment Value

JUDGMENT VALUE CHART

1. When the OK idling cycle was completed 40 times in a row
2. When "Clear Memory" was performed

1. When the OK driving cycle was completed 3 times in a row
2. When "Clear Memory" was performed

None

Memorize the freeze frame data. (For test mode $02)

Detect the malfunction of unstable output from fuel level sensor caused by noise.

Judge NG when the max. value and cumulative value of output voltage variation of fuel level sensor is larger than the threshold value.

ENABLE CONDITION CHART

1. Perform the diagnosis continuously in idling condition.
2. Pay attention to the fuel level.

Calculate the Max. value (delflmax) and cumulative value (sumfl) of output voltage variation of fuel level sensor during 12.3 seconds. Judge it normal when both max. and cumulative values are not over the threshold value. Otherwise, when either of them is over the threshold value, count the diagnosis counter up. And judge NG if the counter indicated 6 counts.

Fuel Level Sensor Output Voltage Variation Graph. Scheme 300

1. Abnormality Judgment

Judge NG when the malfunction criteria below are completed.

Judgment Value