Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO) (Except Sti): Diagnosis Subaru Impreza GH

OUTLINE OF DIAGNOSIS

Judge as NG with either Low NG or High NG.

A variable valve lift diagnosis oil pressure switch is installed for diagnosis. It is possible to determine whether the intake valve is in high mode (increase the amount of lift) or in low mode (suppressing the amount of lift) when the variable valve lift diagnosis oil pressure switch is turned ON or OFF.

1. Normal VALVE LIFT DIAGNOSIS REFERENCE CHART Oil switching solenoid valve duty Intake valve Variable valve lift diagnosis oil pressure switch Large High mode ON Minimum Low mode OFF
2. Low NG

When the variable valve lift diagnosis oil pressure switch remains OFF even though the intake valve tried to enter high mode (oil switching solenoid valve duty is large), this is judged as a Low NG.

1. High NG

When the variable valve lift diagnosis oil pressure switch remains ON even though the intake valve tried to enter low mode (oil switching solenoid valve duty is small), this is judged as a High NG.

DIAGNOSTIC METHOD

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis

Low side: 784 ms

High side: 3000 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis

Low side: 208 ms

High side: 3000 ms

Note. For the detection standard, refer to DTC P0026. Refer to DTC P0026 INTAKE VALVE CONTROL SOLENOID CIRCUIT RANGE/PERFORMANCE (BANK 1) , Diagnostic Trouble Code (DTC) Detecting Criteria.

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

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

Scheme 193

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 10000 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 10000 ms

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

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

Judge as NG when the terminal voltage remains Low.

Scheme 194

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

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

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

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

Judge as NG when the terminal voltage remains High.

Scheme 195

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

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

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect the rear oxygen sensor heater open or short circuit.

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

Judge as NG when the terminal voltage remains Low.

Scheme 196

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 8 ms x 320 time(s)

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect the rear oxygen sensor heater open or short circuit.

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

Judge as NG when the terminal voltage remains High.

Scheme 197

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 8 ms x 320 time(s)

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect problems in the intake manifold pressure sensor output properties.

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

Scheme 198

1. Abnormality Judgement

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

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis

Low side: 3000 ms

High side: 7000 ms

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

1. Normality Judgement

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

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis

Low side: Less than 1 second

High side: Less than 1 second

Detect the open circuit of the oil switching solenoid valve.

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

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2000 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2000 ms

Detect short circuits of the oil switching solenoid valve.

Judge as a short NG when the current is large even though the output duty is small.

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2000 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2000 ms

Note. For the detection standard, refer to DTC P0076. Refer to DTC P0076 INTAKE VALVE CONTROL SOLENOID CIRCUIT LOW (BANK 1) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Note. For the detection standard, refer to DTC P0077. Refer to DTC P0077 INTAKE VALVE CONTROL SOLENOID CIRCUIT HIGH (BANK 1) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Detect the malfunction of air flow sensor output properties.

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

Scheme 199

1. Abnormality Judgement

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

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis

Low: 5000 ms

High: 10000 ms

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

1. Normality Judgement

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

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis

Low: Less than 1 second

High: Less than 1 second

Detect open or short circuits of the air flow sensor. Judge as NG if out of specification.

Scheme 200

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect open or short circuits of the air flow sensor.

Judge as NG if out of specification.

Scheme 201

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Judge as NG if out of specification.

Scheme 202

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Judge as NG if out of specification.

Scheme 203

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect the malfunction of intake air temperature sensor output property.

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

Scheme 204

1. Abnormality Judgement

Judge as NG when the following conditions are established.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Judge as NG if out of specification.

Scheme 205

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Judge as NG if out of specification.

Scheme 206

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Judge as NG if out of specification.

Scheme 207

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Judge as NG if out of specification.

Scheme 208

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Judge as NG if out of specification.

Scheme 209

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 24 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 24 ms

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

Judge as NG if out of specification.

Scheme 210

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 24 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 24 ms

Detect the malfunction of engine coolant temperature output property.

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

Scheme 211

1. Abnormality Judgement

Judge as NG if the criteria below are met.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Timer for diagnosis after engine start

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

64 milliseconds + TWCNT milliseconds (at the time of 64 milliseconds)

TWCNT is defined as follows

TWCNT = 0 at idle switch ON

TWCNT show on the following table at idle switch OFF.

VEHICLE SPEED SPECIFICATION CHART

Judgement value of timer after engine starting

t = 573669 ms-33924 ms x Ti

Ti: The lowest coolant temperature after engine start

Time Needed for Diagnosis: Less than 1 second

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect the malfunction of the engine coolant temperature sensor characteristics.

Memorize the engine coolant temperature and fuel temperature at the last engine stop, and use them to judge as NG when the engine coolant temperature does not decrease when it should.

Scheme 212

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect malfunctions of the thermostat function.

Judge as NG when the engine coolant temperature is lower than the estimated engine coolant temperature and the difference between them is large. Judge as OK when the engine coolant temperature becomes to 75°C (167°F), and the difference is small, before judging NG.

Scheme 213

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 64 ms x 3 time(s) x 152 time(s)

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of sensor.

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

Scheme 214

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis

Input voltage (+): 1000 ms

Input voltage (-): 1000 ms

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

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of sensor.

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

Scheme 215

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis

Input voltage (+): 1000 ms

Input voltage (-): 1000 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

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 sensor cover holes are clogged, the rich to lean judgement in the ECM is delayed when the actual change from rich to lean occurs. Judge as NG when the actual movement in comparison to the ECM control amount is slow.

Scheme 216

Scheme 217

Calculate faf difference every 32 ms x 4, and the lambda value difference. Calculate the diagnosis value after calculating 1640 time(s).

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 32 ms x 4 x 1640 time(s)

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 32 ms x 4 x 1640 time(s)

Detect open circuits of the sensor.

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

Scheme 218

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 5000 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Scheme 219

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis

High: 2500 ms

Low (1): 20000 ms

Low (2): 40000 ms

Low (3): Value from Map

Map

MAP SPECIFICATION CHART

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis

High: Less than 1 second

Low (1): Less than 1 second

Low (2): Less than 1 second

Low (3): Less than 1 second

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

Detect the slow response of the oxygen sensor.

Judge as NG if either the rich to lean response diagnosis or lean to rich response diagnosis is NG, and Judge as OK if both are OK.

[Rich --> lean diagnosis response]

1. Measure the response time for oxygen sensor output changes when the A/F ratio changes from rich to lean. If the measured response time is larger than the threshold value, it is NG. If it is smaller, it is OK.
2. Judge as NG when the oxygen sensor voltage is large (rich) when recovering from a deceleration fuel cut.

[Lean --> rich diagnosis response]

1. Measure the response time for oxygen sensor output changes when the A/F ratio changes from lean to rich. If the measured response time is larger than the threshold value, it is NG.
2. Judge as NG when the oxygen sensor voltage remains small when recovering from a deceleration fuel cut.

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

Scheme 220

When the oxygen sensor output voltage changes from 0.55 V (rich) to 0.15 V (lean), calculate the minimum response time for output change between 0.5 V and 0.2 V for the judgement criteria.

Scheme 221

1. Abnormality Judgement

1. Judge as NG when the judgement value is larger than the threshold value after deceleration fuel cut. Response time (diagnosis value) > Threshold value --> abnormal NOTE: Variation time of rear oxygen sensor output voltage is short during fuel cut in deceleration. NG judgement should be performed after deceleration fuel cut. Even without deceleration fuel cut, judge as OK if the value is below the threshold. When the deceleration fuel cut time is 6000 ms or more, judge as NG if the following criteria are met 2000 ms after recovering from the deceleration fuel cut.
2. Judge as NG when the oxygen sensor voltage at recovery from a deceleration fuel cut is large.

If the fuel cut time in a deceleration fuel cut is long (6000 ms or more), and even after recovering from a deceleration fuel cut, the oxygen sensor voltage is high (0.55 V or more), judge as NG.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 1 time(s)

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

1. Normality Judgement

1. Regardless of a deceleration fuel cut, if the response time (diagnosis value) when the oxygen sensor voltage has changed from rich to lean is shorter than the threshold value (judgement value), judge as a normal condition. Response time (diagnosis value) < Threshold value --> normal
2. Do not judge as a normal condition.

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 1 time(s)

When the oxygen sensor output voltage changes from 0.25 V (lean) to 0.55 V (rich), calculate the minimum response time for output change between 0.3 V and 0.5 V for the judgement criteria.

Scheme 222

1. Abnormality Judgement

1. Judge as NG when the judgement value is larger than the threshold value after deceleration fuel cut. Response time (diagnosis value) > threshold value --> abnormal
2. If the oxygen sensor voltage is small after recovering from a deceleration fuel cut, and remains small, judge as NG.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 1 time(s)

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

1. Normality Judgement

1. Regardless of a deceleration fuel cut, if the response time (diagnosis value) when the oxygen sensor voltage has changed from rich to lean is shorter than the threshold value (judgement value), judge as a normal condition. Response time (diagnosis value) < or = threshold value --> normal
2. Do not judge as a normal condition.

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 1 time(s)

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

Scheme 223

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 200000 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Diagnostic method

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

1. Abnormality Judgement

Compare the diagnosed value (fsobd) with the threshold value, and if a condition meeting the malfunction criteria below continues for 10 s x 5 time(s) or more, judge that there is a fault in the fuel system.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Map 2

MAP SPECIFICATION CHART

Time Needed for Diagnosis: 10 s x 5 time(s)

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 10 s

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

Diagnostic method

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

1. Abnormality Judgement

Compare the diagnosed value (fsobd) with the threshold value, and if a condition meeting the malfunction criteria below continues for 10 s x 5 time(s) or more, judge that there is a fault in the fuel system.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Map 2

MAP SPECIFICATION CHART

Time Needed for Diagnosis: 10 s x 5 time(s)

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

1. Normality Judgement

Judge as OK when the malfunction criteria below continues for 10 seconds.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 10 s

Detect faults in the fuel temperature sensor output properties.

Diagnosis is performed in two methods (drift diagnosis and stuck diagnosis). If either is NG, judge as NG. If both are OK, Judge as OK and clear the NG.

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 judged as NG.

Stuck Diagnosis

As the engine warms up (cumulative amount of intake air after starting is large), if the fuel temperature which should rise does not, determine as being stuck and NG.

Scheme 224

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 120 s

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

1. Abnormality Judgement

Judge as NG when the following conditions are established.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of fuel temperature sensor.

Judge as NG if out of specification.

Scheme 225

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of fuel temperature sensor.

Judge as NG if out of specification.

Scheme 226

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

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

1. Abnormality Judgement

Judge as NG when the following conditions are established.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

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

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

64 milliseconds + TOILCNT milliseconds (at the time of 64 milliseconds).

Where, TOILCNT is determined as follows

TOILCNT = 0 at idle switch ON

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

VEHICLE SPEED SPECIFICATION CHART

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

t = 1882940 ms - 43302 ms x Ti (t > or = 2400000)

Ti = The lowest coolant temperature after starting the engine.

Time Needed for Diagnosis: Less than 1 second

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Judge as NG when outside of the judgement value.

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Judge as NG when outside of the judgement value.

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Judge as NG if out of specification.

Scheme 227

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 24 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 24 ms

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

Judge as NG if out of specification.

Scheme 228

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 24 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 24 ms

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

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

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

The following detecting methods are adopted for these detection.

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

1. 360° Interval Difference Method

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

DIAGNOSTIC METHOD CHART

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

Scheme 229

180° Interval Difference Method

INTERVAL DIFFERENCE METHOD CHART

Scheme 230

360° Interval Difference Method

INTERVAL DIFFERENCE METHOD CHART

Scheme 231

720° Interval Difference Method

INTERVAL DIFFERENCE METHOD CHART

Scheme 232

1. FTP 1.5 times misfire (Misfire occurrence level which influences exhaust gas)
2. Abnormality Judgement

Judgement Value (Judge that malfunction occurs when the misfire ratio is high in 1000 engine revs.)

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 1000 engine revs.

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

1. Normality Judgement

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 1000 engine revs.

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Map 3

MAP SPECIFICATION CHART

Time Needed for Diagnosis: 200 engine revs.

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

1. Normality Judgement

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 200 engine revs.

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

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

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

Detect the open or short circuit of knock sensor.

Judge as NG if out of specification.

Scheme 233

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 1000 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of knock sensor.

Judge as NG if out of specification.

Scheme 234

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 1000 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

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

Scheme 235

Scheme 236

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 3000 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect for faults in crankshaft position sensor output properties.

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

Scheme 237

Scheme 238

1. Abnormality Judgement

Judge as NG when the following conditions are established.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 10 engine revs.

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

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

Scheme 239

Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Two engine revs, x 4 time(s)

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

Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Two engine revs.

Detect the malfunction of camshaft position sensor output property.

Judge as NG when the camshaft line signal input timing is shifted from the crankshaft signal because of timing belt tooth chip etc.

Scheme 240

Scheme 241

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 10 engine revs.

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Engine two revolutions

Detect EGR system malfunction.

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

Scheme 242

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

1. Label the intake manifold pressure value as PMOF1, which is observed when enable conditions are established, and set the EGR target step to 50 steps (nearly full open).
2. Label the intake manifold pressure value as PMON, which is observed after one second has passed since EGR target step was set to 50 steps (when the enable conditions were established), and set the EGR target step to 0.
3. Label the intake manifold pressure as PMOF2, which is observed after one second has passed since EGR target step was set to 0 (after two seconds have passed since the enable conditions were established).

1. Abnormality Judgement

Judge as NG when the following conditions are established.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 1 time

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

Scheme 243

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 1 time

Detect the deterioration of the catalyst function.

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

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

Scheme 244

After establishing the execution conditions, calculate the front oxygen (A/F) sensor lambda deviation cumulative value per 32 milliseconds x 4 (Sum |(sglmd n - sglmd n_1 )|) and rear oxygen sensor output voltage deviation cumulative value (Sum (ro2sad n - ro2sad n_1 )), and when the front oxygen (A/F) sensor lambda deviation cumulative value (Sum |(sglmd n - sglmd N-1 )|) becomes the predetermined value or more, calculate the diagnostic value.

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 30 - 55 seconds

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 30 - 55 seconds

Check if there is a leakage in fuel system or not, and perform the function diagnosis of valve.

Scheme 245

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

0.04-inch Diagnosis

Scheme 246

DIAGNOSIS MODE DESCRIPTION CHART

Mode Table for Evaporative Emission Control System Diagnosis

EVAPORATIVE EMISSION CONTROL SYSTEM DIAGNOSIS MODE CHART

0.02-Inch Diagnosis

Scheme 247

DIAGNOSIS MODE DESCRIPTION CHART

Map 1

MAP SPECIFICATION CHART

Map 2

MAP SPECIFICATION CHART

Map 3

MAP SPECIFICATION CHART

Purge control solenoid valve stuck open fault diagnosis

DTC

P0457 Evaporative Emission Control System Leak Detected (Fuel Cap Loose/Off)

Purpose of Mode Z

When performing the leakage diagnosis of EVAP system, the purge control solenoid valve must operate normally. Therefore, mode Z is used to diagnose the purge control solenoid valve stuck open condition. Note that if a purge control solenoid valve stuck open fault is detected, the EVAP system leakage diagnosis is cancelled.

Diagnostic method

Purge control solenoid valve functional diagnosis is performed by monitoring the tank pressure in mode Z.

1. Abnormality Judgement

If OK judgement cannot be made, extend Mode Z, and Judge as NG when the following conditions are established after predetermined amount of time.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 0 ms + 3000 ms + 13000 ms

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

When judgement for purge control solenoid valve stuck open NG is made, end the evaporative diagnosis. Cancel the evaporative diagnosis when the OK/NG judgement for purge control solenoid valve stuck open cannot be made in Mode Z.

1. Normality Judgement

Judge as OK and change to Mode A when the following conditions are established after predetermined time has passed since Mode Z started.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Normal

Scheme 248

Normal when evptez - evptezha < or = 0.4 kPa (3 mmHg, 0.1 inHg) is established

Time Needed for Diagnosis: 0 ms + 3000 ms

Purge control solenoid valve Open Fixation

Scheme 249

1. evptezini < or = 1.4 kPa (10.7 mmHg, 0.4 inHg)
2. evptez - evptezha > 0.9 kPa (6.5 mmHg, 0.3 inHg)
3. No fuel sloshing of over 2 l (0.53 US gal, 0.44 lmp gal) lasts for more than 40000 ms

Judge as abnormal when all are established.

Leak Diagnosis

DTC

P0442 Evaporative Emission Control System Leak Detected (Small Leak)

P0457 Evaporative Emission Control System Leak Detected (Fuel Cap Loose/Off)

1. The diagnostic 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 barometric pressure.
2. The diagnosis is divided into the following five phases.

Mode A: (Estimated evaporation gas amount)

Calculate the tank pressure change amount (P1) when using mode A. After calculating P1, switch to mode B.

Mode B: (Negative pressure sealed)

Introduce negative pressure in the intake manifold to the tank.

Approx. 0 --> -1.4 kPa (0 --> -10.5 mmHg, 0 --> -0.4 inHg)

When the pressure above (desired negative pressure) is reached, enters Mode C.

In this case, if the tank pressure does not reach the target negative pressure, judge that there is a large leakage in the system and terminate the evaporative emission control system diagnosis.

Abnormality Judgement

Judge as NG (large leakage) when the following conditions are established.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 0 ms + 3000 ms + 10000 ms + 10000 ms + 25000 ms

Mode C: (Check pressure rise)

Stop the introduction of negative pressure. (Wait until the tank pressure returns to the start level of P2 calculation.)

Change to Mode D when the tank pressure returns to the start level of P2 calculation.

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

TANK PRESSURE STARTING CALCULATION CHART

Time Needed for Diagnosis: 0 ms + 3000 ms + 10000 ms + 10000 ms + 25000 ms + 18600 ms

Mode D: (Measure amount of negative pressure change)

Monitor the tank pressure change amount when using mode D. In this case, the tank pressure increases, (nears barometric pressure) because evaporation occurs. 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 a small leak diagnosis according to the items below.

When Mode D is ended

Assign tank variations measured in Mode A and Mode D, P1 and P2, to the formula below, judge small leaks in the system. If the measured judgement value exceeds the threshold value, it is judged to be a malfunction.

Abnormality Judgement

Judge as NG when the following conditions are established within the predetermined time. Judge as OK and clear the NG if the following conditions are not established within the predetermined time.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

*1.5 -: Evaporation amount compensation value when below negative pressure (Amount of evaporation occurrence increases as a vacuum condition increases.)

Map 5 Malfunction criteria limit for evaporation diagnosis

MAP SPECIFICATION CHART

Time Needed for Diagnosis: 0 ms + 3000 ms +10000 ms +10000 ms + 25000 ms +18600 ms + 10000 ms

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

Leak Diagnosis

DTC

P0456 Evaporative Emission Control System Leak Detected (very small leak)

1. The diagnostic 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 barometric pressure.
2. The diagnosis is divided into the following five phases.

Mode A: (0 point compensation)

When the pressure in the tank is not near 0 mmHg, wait until it returns to 0 point (near 0 mmHg). Shift to mode B when returned to the 0 point. Cancel the diagnosis when 0 point does not return in the specified time.

Mode B: (Negative pressure introduced)

Introduce negative pressure in the intake manifold to the tank.

Approx. 0 --> -2 kPa (0 --> -15 mmHg, 0 --> -0.6 inHg)

When the pressure above (desired negative pressure) is reached, enters Mode C.

When the tank internal pressure does not reach the target negative pressure, the diagnosis is cancelled.

Mode C: (Negative pressure maintained)

Stop the introduction of negative pressure. (Wait until the tank pressure returns to the start level of P2 calculation.)

Change to Mode D either when the tank pressure returns to the start level of P2 calculation, or when the predetermined amount of time has passed.

Mode D: (Calculate the amount of negative pressure change)

Monitor the tank pressure in mode D, calculate the pressure change in the tank (P2), and measure the time (evpdset) for the tank pressure to change to the Mode E shifting pressure. When the Mode E shifting pressure is reached, Mode E is entered. If it does not change to the Mode E shifting pressure after the predetermined amount of time has passed, make advanced OK judgement or cancel the diagnosis according to the value of P2.

Normality Judgement

Judge as OK when the following conditions are established.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Map 6

MAP SPECIFICATION CHART

Map 7

MAP SPECIFICATION CHART

Mode E: (Evaporation occurrence amount calculation)

Calculate the change of tank pressure with the time evpdset (P1) to judge as NG/OK according to the value of P1. (ambiguous determination acceptable).

1. Abnormality Judgement

Judge as NG when the following conditions are established.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Map 8 Malfunction criteria limit for evaporation diagnosis

MAP SPECIFICATION CHART

Time Needed for Diagnosis: Value of Map 1+ Value of Map 2 + 25290 ms + 0 + Value of Map 2 + 0 ms + 200000 ms + Value of Map 3 + 0 ms + 200000 ms

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

1. Normality Judgement

Judge as OK when the following conditions are established.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Map 9 Malfunction criteria limit for evaporation diagnosis

MAP SPECIFICATION CHART

Time Needed for Diagnosis: Value of Map 1 + Value of Map 2 + 25290 ms + 0 + Value of Map 2 + 0 ms + 200000 ms + Value of Map 3 + 0 ms + 200000 ms

Detect open or short circuit of the drain valve.

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

Scheme 250

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect open or short circuit of the drain valve.

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

Scheme 251

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect the tank pressure sensor output property abnormality.

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

Scheme 252

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

If the difference between the Max. fuel level every 60 s and Min. fuel level every 60 s is less than 2 l (0.53 US gal, 0.44 lmp gal), extend 60 s and make judgement with the Max. and Min. values for the fuel level in 60 s x 2. If a difference does not appear, extend the time (60 s x 3, 60 s x 4, 60 s x 5) and continue the judgement. If the difference between the Max. fuel level every 60 s and Min. fuel level every 60 s is 2 G (0.53 US gal, 0.44 lmp gal) or more, the diagnosis counter counts up.

Time Needed for Diagnosis: 60 s x 16 time(s) or more

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Judge as NG if out of specification.

Scheme 253

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 15000 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Judge as NG if out of specification.

Scheme 254

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 15000 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Note. For the detection standard, refer to DTC P0442. Refer to DTC P0442 EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECTED (SMALL LEAK) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Note. For the detection standard, refer to DTC P0442. Refer to DTC P0442 EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECTED (SMALL LEAK) , Diagnostic Trouble Code (DTC) Detecting Criteria.

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

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

Scheme 255

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

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

Scheme 256

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect malfunctions of the fuel level sensor output property.

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

Scheme 257

1. Abnormality Judgement

Judge as NG when the following conditions are established.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Scheme 258

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Scheme 259

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 1000 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect the unstable output faults from the fuel level sensor caused by noise. Judge as NG when the max. value and cumulative value of output voltage variation of the fuel level sensor is larger than the threshold value.

Calculate the Max. value (DELFLMAX) and cumulative value (SUMFL) of output voltage variation of fuel level sensor during 12.2 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, the diagnosis counter counts up. Judge as NG if the counter indicated 4 time(s).

Scheme 260

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Map

MAP SPECIFICATION CHART

The diagnosis counter does not count up when the following conditions are completed within 12288 ms.

MAXIMUM VALUE - MINIMUM VALUE BATTERY VOLTAGE SPECIFICATION CHART

Time Needed for Diagnosis: 12288 ms x 4 time(s)

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 12288 ms

Judge as NG when outside of the judgement value.

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

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2500 ms

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

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

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

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 10 s

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

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

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

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 10 s

Detect the open or short circuit of starter SW.

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

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 180000 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

DTC REFERENCE CHART

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

Detect malfunction of CAN communication.

When CAN communications is not possible, and CAN communications with TCM is not possible, judge as NG if data from the TCM is not normal.

1. Abnormality Judgement

Judge as NG when the following conditions are established.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 1000 ms

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

Detect the malfunction of microcomputer (RAM).

When there is a problem in the main CPU normal RAM, or the sub CPU normal RAM, judge as NG. Judge as OK when both are operating properly.

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

Abnormality Judgement

Judge as NG if the criteria below are met.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Undetermined

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

Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

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

Abnormality Judgement

Judge as NG if the criteria below are met.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Undetermined

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

Judge as NG when any one of the followings is established.

1. When the read value of throttle position sensor 1 signal is mismatched between main CPU and sub CPU.
2. When the read value of accelerator pedal position sensor 1 signal is mismatched between main CPU and sub CPU.
3. When the sub CPU operates abnormally.
4. When the communication between main CPU <--> sub CPU is abnormal.
5. When the input amplifier circuit of throttle position sensor 1 is abnormal.
6. When the cruise control cannot be canceled correctly.
7. When the signal of brake SW1 and 2 is mismatched.

Scheme 261

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis

1. 600 milliseconds
2. 830 milliseconds
3. 200 milliseconds
4. 200 milliseconds
5. 24 milliseconds
6. 250 milliseconds
7. 200 milliseconds

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

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

Scheme 262

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis

1. Target opening angle and actual opening angle: 250 milliseconds (For NG) 2000 milliseconds (For OK)
2. Output duty to drive circuit: 2000 milliseconds

Details of Judgement Value

Scheme 263

Details of Judgement time (The actual opening angle < target opening angle is always 1000 milliseconds)

Scheme 264

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

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

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Judge the open or short circuit of the neutral SW.

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

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 100 time(s)

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of neutral SW.

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

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 3 time(s)

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Judge the open or short circuit of the neutral SW.

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

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 100 time(s)

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect the open or short circuit of neutral SW.

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

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 3 time(s)

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect that lambda value remains low.

Judge as NG when lambda value is abnormal in accordance with lambda value of front oxygen (A/F) sensor and running conditions such as vehicle speed, amount of intake air, engine coolant temperature, sub feedback control, etc.

AIR FUEL RATIO REFERENCE CHART

Scheme 265

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 10000 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect that lambda value remains high.

Judge as NG when lambda value is abnormal in accordance with A, value of front oxygen (A/F) sensor and running conditions such as vehicle speed, amount of intake air, engine coolant temperature, sub feedback control, etc.

AIR FUEL RATIO REFERENCE CHART

Scheme 266

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 10000 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Scheme 267

1. Abnormality Judgement

Judge as NG when the following conditions are established.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 24 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 3400 ms

Detect the open/short circuit of pressure control solenoid valve.

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

Scheme 268

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect the open/short circuit of pressure control solenoid valve.

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

Scheme 269

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect the abnormal function (stuck closed) of the drain valve.

Judge as NG when fuel tank pressure is low.

Scheme 270

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 3000 s

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Detect the blow-by hose disconnection abnormality.

Judge as NG when the diagnosis terminal voltage is high.

Scheme 271

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

Scheme 272

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 128 ms

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

Scheme 273

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 128 ms

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

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

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

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

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

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

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

Judge as NG when the backup power voltage is low.

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 2500 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

Note. For the detection standard, refer to DTC P0513. Refer to DTC P0513 INCORRECT IMMOBILIZER KEY , Diagnostic Trouble Code (DTC) Detecting Criteria.

Note. For the detection standard, refer to DTC P0513. Refer to DTC P0513 INCORRECT IMMOBILIZER KEY , Diagnostic Trouble Code (DTC) Detecting Criteria.

Note. For the detection standard, refer to DTC P0513. Refer to DTC P0513 INCORRECT IMMOBILIZER KEY , Diagnostic Trouble Code (DTC) Detecting Criteria.

Note. For the detection standard, refer to DTC P0513. Refer to DTC P0513 INCORRECT IMMOBILIZER KEY , Diagnostic Trouble Code (DTC) Detecting Criteria.

Note. For the detection standard, refer to DTC P0513. Refer to DTC P0513 INCORRECT IMMOBILIZER KEY , Diagnostic Trouble Code (DTC) Detecting Criteria.

Note. For the detection standard, refer to DTC P0513. Refer to DTC P0513 INCORRECT IMMOBILIZER KEY , Diagnostic Trouble Code (DTC) Detecting Criteria.

Note. For the detection standard, refer to DTC P0513. Refer to DTC P0513 INCORRECT IMMOBILIZER KEY , Diagnostic Trouble Code (DTC) Detecting Criteria.

Detect malfunctions of the catalyst advanced idling retard angle control.

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

Judge as NG if there is exhaust gas temperature diagnosis and idle speed diagnosis and if either of them is NG.

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

Judge as NG when actual engine speed is not close to target engine speed after terminating the retard angle control.

1. Exhaust gas temperature diagnosis

Abnormality Judgement

Calculate the estimated exhaust gas temperature when the diagnostic enable condition is established. Judge as NG when the following conditions are established after engine starting within the predetermined time.

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Map

MAP SPECIFICATION CHART

Time Needed for Diagnosis: 14 seconds

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

Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

1. Idle speed diagnosis

Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 14 seconds

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

Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: Less than 1 second

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

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

Scheme 274

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 5 s x 1 time(s)

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 5 s

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

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

Scheme 275

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 5 s x 1 time(s)

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 5 s

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

Scheme 276

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis

1. 500 milliseconds (For NG)
2. 2000 milliseconds (For OK)

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

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

Scheme 277

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis

1. 400 milliseconds (For NG)
2. 2000 milliseconds (For OK)

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

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

Scheme 278

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis

1. 600 milliseconds (For NG)
2. 400 milliseconds (For OK)

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

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

Scheme 279

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 8 - 80 milliseconds

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

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

Judge as NG if out of specification.

Scheme 280

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 100 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 100 ms

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

Judge as NG if out of specification.

Scheme 281

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 32 ms

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

1. Normality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 32 ms

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

Judge as NG if out of specification.

Scheme 282

1. Abnormality Judgement

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

Judgement Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE CHART

Time Needed for Diagnosis: 100 ms

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

1. Normality Judgement

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

Judgement Value