Diagnostic Trouble Code (DTC) Detecting Criteria (h4so) Subaru Impreza WRX GH

LIST

DIAGNOSTIC TROUBLE CODE

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 DIAGNOSIS REFERENCE 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.
3. 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.

COMPONENT DESCRIPTION

The variable valve lift system optimizes the intake valve lift by switching between the low lift cam and the high lift cam according to the engine speed. The amount of Intake valve lift is varied by controlling the oil switching solenoid valve duty according to signals from the ECM.

Scheme 119

ENABLE CONDITIONS

ENABLE CONDITIONS

GENERAL DRIVING CYCLE

Perform the diagnosis continuously 6 seconds after engine start while variable valve lift is being controlled

DIAGNOSTIC METHOD

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Low Duty ratio > or = 62 % Variable valve lift diagnosis oil pressure switch OFF High Duty ratio < 33 % Variable valve lift diagnosis oil pressure switch ON Time Needed for Diagnosis: Low side: 784 ms High side: 3000 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Low Duty ratio > or = 62 % Variable valve lift diagnosis oil pressure switch ON High Duty ratio < 33 % Variable valve lift diagnosis oil pressure switch OFF Time Needed for Diagnosis: Low side: 208 ms High side: 3000 ms

DTC CLEAR CONDITION

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

MALFUNCTION INDICATOR LIGHT CLEAR CONDITIONS

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

FAIL SAFE

None

ECM OPERATION AT DTC SETTING

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

Note. For the detection standard, refer to DTC P0026. 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 120

ENABLE CONDITIONS

Perform the diagnosis continuously after 42000 ms seconds or more have passed since the engine started.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Front oxygen (A/F) sensor impedance > 50 ohms Time Needed for Diagnosis: 10000 ms Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Front oxygen (A/F) sensor impedance < or = 50 ohms Time Needed for Diagnosis: 10000 ms

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

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

1. Front oxygen (A/F) sensor main learning compensation: Not allowed to calculate.
2. Front oxygen (A/F) sensor sub learning compensation: Not allowed to calculate.
3. Purge control: Not allowed to purge.

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

Detect 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 121

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage level Low Front oxygen (A/F) sensor heater control duty < 87.5 % Time Needed for Diagnosis: 4 ms x 250 time Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage level High Time Needed for Diagnosis: Less than 1 second

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

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

1. Front oxygen (A/F) sensor heater control: Not allowed to turn on the heater.
2. A/F main learning: Not allowed to calculate the A/F main learning compensation factor.
3. A/F sub learning: Not allowed to calculate the A/F sub learning compensation factor.
4. Purge control: Not allowed to purge.

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

Detect 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 122

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage level High Front oxygen (A/F) sensor heater control duty > or = 12.5 % Time Needed for Diagnosis: 4 ms x 500 time Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage level Low Time Needed for Diagnosis: Less than 1 second

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

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

1. Front oxygen (A/F) sensor heater control: Not allowed to turn on the heater.
2. A/F main learning: Not allowed to calculate the A/F main learning compensation factor.
3. A/F sub learning: Not allowed to calculate the A/F sub learning compensation factor.
4. Purge control: Not allowed to purge.

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

Detect the 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 123

ENABLE CONDITIONS

After starting the engine, perform the diagnosis continuously when engine is low speed.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage level Low Rear oxygen sensor heater control duty < 75 % Time Needed for Diagnosis: 8 ms x 320 time Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage level High Time Needed for Diagnosis: Less than 1 second

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

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

Sub feedback control: Not allowed

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

Detect the 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 124

ENABLE CONDITIONS

After starting the engine, perform the diagnosis continuously when engine speed is low.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage level High Rear oxygen sensor heater control duty > or = 20 % Time Needed for Diagnosis: 8 ms x 320 time Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage level Low Time Needed for Diagnosis: Less than 1 second

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

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

Sub feedback control: Not allowed

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

Detect 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 125

ENABLE CONDITION

ENABLE CONDITION

Perform the diagnosis continuously after idling.

1. Abnormality Judgment Judge as NG when Low side or High side becomes NG. If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Low Engine speed < 2500 rpm Throttle position > or = 12° Output voltage < 1.63 V Engine load > 0.6 g/rev (0.02 oz/rev) High Engine speed 600 rpm - 900 rpm Throttle position < 2.44° Output voltage > or = 3.4 V Engine load < 0.4 g/rev (0.01 oz/rev) 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.
2. Normality Judgment Judge as OK and clear the NG when both Low side and High side become OK. If the duration of time while the following conditions are met is longer than the time indicated, judge as OK. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Low Engine speed < 2500 rpm Throttle position > or = 12° Output voltage > or = 1.63 V Engine load > 0.6 g/rev (0.02 oz/rev) High Engine speed 600 rpm - 900 rpm Throttle position < 2.44° Output voltage < 3.4 V Engine load < 0.4 g/rev (0.01 oz/rev) Time Needed for Diagnosis: Low side: Less than 1 second High side: Less than 1 second

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

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

1. Intake manifold pressure sensor process: Estimate the pressure from engine load.
2. ISC feedback: Not allowed to calculate the amount of feedback.

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

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.

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Duty ratio > or = 30 % Control current < 0.026 A Time Needed for Diagnosis: 2000 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value |Oil switching solenoid valve target current value - Oil switching solenoid valve current value| < 0.08 A Target current > or = 0.11 A Time Needed for Diagnosis: 2000 ms

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

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

None

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

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.

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Duty ratio < 7% Control current > or = 0.465 A Time Needed for Diagnosis: 2000 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value |Oil switching solenoid valve target current value - Oil switching solenoid valve current value| < 0.08 A Time Needed for Diagnosis: 2000 ms

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

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

None

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

Note. For the detection standard, refer to DTC P0076. 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. 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 126

ENABLE CONDITIONS

Perform the diagnosis continuously after idling.

1. Abnormality Judgment Judge as NG when Low side or High side becomes NG. If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Low Output voltage < 1.49 V Engine speed > or = 2000 rpm Throttle opening angle > or = 12° Intake manifold pressure > or = 66.7 kPa (500 mmHg, 19.7 inHg) High (1) Output voltage > or = 2.66 V Engine speed 600 rpm - 900 rpm Throttle opening angle < 2.44° Intake manifold pressure < 40 kPa (300 mmHg, 11.8 inHg) High (2) Output voltage > or = 1.45 V Engine speed 600 rpm - 900 rpm Throttle opening angle < 2.44° Intake manifold pressure < 40 kPa (300 mmHg, 11.8 inHg) Fuel system diagnosis Rich side malfunction Time Needed for Diagnosis: Low: 5000 ms High: 10000 ms Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG when both Low side and High side become OK. Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Low Output voltage > or = 1.49 V Engine speed > or = 2000 rpm Throttle opening angle > or = 12° Intake manifold pressure > or = 66.7 kPa (500 mmHg, 19.7 inHg) High Output voltage < 2.66 V Engine speed 600 rpm - 900 rpm Throttle opening angle < 2.44° Intake manifold pressure < 40 kPa (300 mmHg, 11.8 inHg) Fuel system diagnosis Rich side normal Time Needed for Diagnosis: Low: Less than 1 second High: Less than 1 second

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

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

None

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

Detect open or short circuits of the air flow sensor.

Judge as NG if out of specification.

Scheme 127

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage < or = 0.22 V Time Needed for Diagnosis: 500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage > 0.22 V Time Needed for Diagnosis: Less than 1 second

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

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

None

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

Detect open or short circuits of the air flow sensor.

Judge as NG if out of specification.

Scheme 128

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage > or = 4.179943192 V Time Needed for Diagnosis: 500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage < 4.179943192 V Time Needed for Diagnosis: Less than 1 second

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

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

None

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

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

Judge as NG if out of specification.

Scheme 129

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage < or = 0.573 V Time Needed for Diagnosis: 500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage > 0.573 V Time Needed for Diagnosis: Less than 1 second

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

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

ISC feedback: Not allowed to calculate the amount of feedback.

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

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

Judge as NG if out of specification.

Scheme 130

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage > or = 4.38757221 V Time Needed for Diagnosis: 500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage < 4.38757221 V Time Needed for Diagnosis: Less than 1 second

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

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

ISC feedback: Not allowed to calculate the amount of feedback.

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

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 131

ENABLE CONDITIONS

Perform the diagnosis when the vehicle speed condition is met after warming up from a cold condition.

1. Abnormality Judgment Judge as NG when the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage difference between Max. and Min. < 0.02 V(Equivalent to approximately 0.5°C (0.9°F) near 25°C) Time Needed for Diagnosis: Less than 1 second Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage difference between Max. and Min. > or = 0.02 V Time Needed for Diagnosis: Less than 1 second

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

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

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

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

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

Judge as NG if out of specification.

Scheme 132

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage < 0.230975449 V Time Needed for Diagnosis: 500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage > or = 0.230975449 V Time Needed for Diagnosis: Less than 1 second

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

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

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

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

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

Judge as NG if out of specification.

Scheme 133

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage > or = 4.716 V Time Needed for Diagnosis: 500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage < 4.716 V Time Needed for Diagnosis: Less than 1 second

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

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

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

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

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

Judge as NG if out of specification.

Scheme 134

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage < 0.264738528 V Time Needed for Diagnosis: 500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage > or = 0.264738528 V Time Needed for Diagnosis: Less than 1 second

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

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

1. Engine coolant temperature sensor process: Engine coolant temperature is fixed at 70°C (158°F)
2. ISC Feedback: Calculate target engine speed as engine coolant temperature 70°C (158°F).
3. ISC learning: Not allowed to learn.
4. Air conditioner control: Not allowed to turn the air conditioner to ON.
5. Radiator fan control: Both main and sub fan turn to ON.

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

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

Judge as NG if out of specification.

Scheme 135

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage > or = 4.716 V Time Needed for Diagnosis: 500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage < 4.716 V Time Needed for Diagnosis: Less than 1 second

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

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

1. Engine coolant temperature sensor process: Engine coolant temperature is fixed at 70°C (158°F)
2. ISC Feedback: Calculate target engine speed as engine coolant temperature 70°C (158°F).
3. ISC learning: Not allowed to learn.
4. Air conditioner control: Not allowed to turn the air conditioner to ON.
5. Radiator fan control: Both main and sub fan turn to ON.

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

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

Judge as NG if out of specification.

Scheme 136

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sensor 1 input voltage < or = 0.217 V Time Needed for Diagnosis: 24 ms Malfunction indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sensor 1 input voltage > 0.217 V Time Needed for Diagnosis: 24 ms

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

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

Stop the continuity to the electronic throttle control motor. (Throttle opening is fixed to 6°.)

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

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

Judge as NG if out of specification.

Scheme 137

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sensor 1 input voltage > or = 4.858 V Time Needed for Diagnosis: 24 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sensor 1 input voltage < 4.858 V Time Needed for Diagnosis: 24 ms

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

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

Stop the continuity to the electronic throttle control motor. (Throttle opening is fixed to 6°.)

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

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 138

ENABLE CONDITIONS

Map

ENABLE CONDITIONS - MAP

ENABLE CONDITIONS - MAP

Perform the diagnosis only once after engine start.

1. Abnormality Judgment Judge as NG if the criteria below are met. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Engine coolant temperature < 20 °C (68 °F) Timer for diagnosis after engine start > or = Judgment value of timer after engine start Timer for diagnosis after engine start Timer stop at fuel cut 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. TWCNT CHART Vehicle speed km/h (MPH) 0 (0) 8 (5) 16 (9.9) 24 (14.9) 32 (19.9) 40 (24.9) 48 (29.8) 56 (34.8) Temperature °C (°F) -20 (-4) 0 ms 32.076 ms 39.977 ms 47.879 ms 82.544 ms 117.209 ms 154.214 ms 185.26 ms -10(14) 0 ms 25.704 ms 33.606 ms 41.508 ms 68.52 ms 95.532 ms 125.667 ms 155.802 ms 0 (32) 0 ms 17.646 ms 25.548 ms 33.45 ms 53.652 ms 73.855 ms 97.12 ms 120.386 ms 10 (50) 0 ms 7.901 ms 15.802 ms 23.704 ms 37.941 ms 52.177 ms 68.573 ms 82.538 ms 20 (68) 0 ms 7.901 ms 15.802 ms 23.704 ms 37.941 ms 52.177 ms 68.573 ms 82.538 ms Judgment 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.
2. Normality Judgment Judge as OK and clear the NG when the malfunction criteria below are met. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Engine coolant temperature > or = 20 °C (68 °F) Time Needed for Diagnosis: Less than 1 second

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

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

1. Engine coolant temperature sensor process: Engine coolant temperature is fixed at 70°C (158°F)
2. ISC Feedback: Calculate target engine speed as engine coolant temperature 70°C (158°F).
3. ISC learning: Not allowed to learn.
4. Air conditioner control: Not allowed to turn the air conditioner to ON.
5. Radiator fan control: Both main and sub fan turn to ON.

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

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 139

ENABLE CONDITIONS

Perform the diagnosis only once after starting the engine.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Engine coolant temperature at the last engine stop - Minimum engine coolant temperature after the engine start < 2.5°C (36.5°F) Fuel temperature at the last engine stop - Fuel temperature > or = 5°C (41°F) Intake air temperature - Fuel temperature < 2.5°C (36.5°F) Fuel temperature < 35 °C (95 °F) Time Needed for Diagnosis: 2500 ms Malfunction Indicator Light Illumination: illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Engine coolant temperature at the last engine stop - Minimum engine coolant temperature after the engine start > or = 2.5°C (36.5°F) Time Needed for Diagnosis: Less than 1 second

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

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

None

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

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 140

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Estimate ambient temperature > or = -7°C (19.4°F) Thermostat malfunction diagnosis Incomplete Engine coolant temperature at engine starting < 55°C (131°F) Estimated coolant temperature > or = 75°C (167°F) Engine coolant temperature < or = 75°C (167°F) (Estimated - measured) Engine coolant temperature > 30°C (86°F) Vehicle speed > or = 30 km/h (18.6 MPH) Time Needed for Diagnosis: 64 ms x 3 time x 152 time Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Estimate ambient temperature > or = -7°C (19.4°F) Thermostat malfunction diagnosis Incomplete Engine coolant temperature at engine starting < 55 °C (131 °F) Engine coolant temperature > or = 75°C (167°F) (Estimated - measured) Engine coolant temperature < or = 30 °C (86 °F) Time Needed for Diagnosis: Less than 1 second

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

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

None

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

Detect the open or short circuit of sensor.

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

Scheme 141

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Input voltage (+) < 1.128 V or Input voltage (-) < 0.23 V or |Input voltage (+) - Input voltage (-)| < 0.644 V 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.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Input voltage (+) > or = 1.128 V Input voltage (-) > or = 0.23 V |Input voltage (+) - Input voltage (-)| > or = 0.644 V Time Needed for Diagnosis: Less than 1 second

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

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

1. Front oxygen (A/F) sensor heater control: Not allowed to turn on heater.
2. A/F main learning: Not allowed to calculate the A/F main learning compensation factor.
3. A/F sub learning: Not allowed to calculate the A/F sub learning compensation factor.
4. Purge control: Not allowed to purge.

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

Detect the open or short circuit of sensor.

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

Scheme 142

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Input voltage (+) > 3.589 V or Input voltage (-) > 3.541 V Time Needed for Diagnosis: Input voltage (+): 1000 ms Input voltage (-): 1000 ms Malfunction indicator Light Illumination: illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Input voltage (+) < or = 3.589 V Input voltage (-) < or = 3.541 V Time Needed for Diagnosis: Less than 1 second

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

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

1. Front oxygen (A/F) sensor heater control: Not allowed to turn on heater.
2. A/F main learning: Not allowed to calculate the A/F main learning compensation factor.
3. A/F sub learning: Not allowed to calculate the A/F sub learning compensation factor.
4. Purge control: Not allowed to purge.

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

Detect the 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 judgment 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 143

Scheme 144

ENABLE CONDITIONS

Perform diagnosis only once at a constant speed of 10 km/h - 120 km/h (6.2 MPH - 74.6 MPH) 120000 ms or more after starting the engine.

Calculate fat difference every 32ms x 4, and the X value difference. Calculate the diagnosis value after calculating 1640 time.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value parafca = td2faf/td2lmd where, td2faf (N) = td2faf (n-1) + |d2faf (n)| td2lmd (N) = td2lmd (n-1) + |d2lmd (n)| add up to 32 ms x 4 x 1640 time. d2faf (n) = (faf (n) - faf (n-1)) - (faf (n-1) - faf (n-2)) d2lmd (n) = (lmd (n) - lmd (n-1)) - (lmd (n-1) - lmd (n-2)) faf = main feedback compensation coefficient every 128 milliseconds lmd = output lambda every 128 milliseconds > 0.45 Time Needed for Diagnosis: 32 ms x 4 x 1640 time Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value parafca = td2faf/td2lmd where, td2faf (N) = td2faf (n-1) + |d2faf (n)| td2lmd (N) = td2lmd (n-1) + |d2lmd (n)| add up to 32 ms x 4 x 1640 time. d2faf (n) = (faf (n) - faf (n-1)) - (faf (n-1) - faf(n-2)) d2lmd (n) = (lmd (n) - lmd (n-1)) - (lmd (n-1) - lmd (n-2)) faf = main feedback compensation coefficient every 128 milliseconds lmd = output lambda every 128 milliseconds 0.45 Time Needed for Diagnosis: 32 ms x 4 x 1640 time

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

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

1. Front oxygen (A/F) sensor main learning compensation: Not allowed to calculate.
2. A/F sensor sub learning compensation: Not allowed to calculate.
3. Purge control: Not allowed to purge.

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

Detect open circuits of the sensor.

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

Scheme 145

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Time of heater control duty at 70 % or more > or = 36000 ms Front oxygen (A/F) sensor impedance. > 500 ohms Time Needed for Diagnosis: 5000 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Front oxygen (A/F) sensor impedance. < or = 500 ohms Time Needed for Diagnosis: Less than 1 second

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

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

1. Front oxygen (A/F) sensor heater control: Not allowed to turn on heater.
2. A/F main learning: Not allowed to calculate the A/F main learning compensation factor.
3. A/F sub learning: Not allowed to calculate the A/F sub learning compensation factor.
4. Purge control: Not allowed to purge.

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

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 146

Used for abnormality judgment

ENABLE CONDITIONS

Used for normality judgment

ENABLE CONDITIONS

After starting the engine, continuously perform the diagnosis with the same engine condition.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value DTC High Sensor output voltage > 1.2 V P0138 Low Sensor output voltage <0.03 V P0137 Time Needed for Diagnosis High: 2500 ms Low (1): 20000 ms Low (2): 40000 ms Low (3): Value from Map Map MAP REFERENCE Fuel Cut Time (Second) 0 2000 10000 Time needed for diagnosis (second) 40000 40000 60000 Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value DTC High Sensor output voltage < or = 1.2 V P0138 Low Sensor output voltage > or = 0.03 V P0137 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

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

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

Sub feedback control: Not allowed

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

Note. For the detection standard, refer to DTC P0137. DTC P0137 02 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 147

Rich --> lean diagnosis response

ENABLE CONDITIONS

Perform the diagnosis only once when deceleration fuel cut occurs after rapid acceleration. (Pay attention to the oxygen sensor voltage for the timing of the deceleration.)

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 judgment criteria.

Scheme 148

1. Abnormality Judgment Judge as NG when the judgment 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 judgment 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. 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. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Shortest time change from rich (0.5 V O 2 output) to lean (0.2 V) when voltage reduces from 0.55 V to 0.15 V > 491 ms or Longest time over 0.55 V > or = 2000 ms Time Needed for Diagnosis: 1 time Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment 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 (judgment value), judge as a normal condition. Response time (diagnosis value) < Threshold value --> normal Do not judge as a normal condition. Judge as OK and clear the NG if the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Shortest time change from rich (0.5 V O 2 output) to lean (0.2 V) when voltage reduces from 0.55 V to 0.15 V < or = 491 ms Time Needed for Diagnosis: 1 time

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

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

Sub feedback control: Not allowed

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

Lean --> rich response diagnosis

ENABLE CONDITIONS

Perform the diagnosis only once when deceleration fuel cut occurs after rapid acceleration. (Pay attention to the oxygen sensor voltage for the timing of the deceleration.)

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 judgment criteria.

Scheme 149

1. Abnormality Judgment Judge as NG when the judgment value is larger than the threshold value after deceleration fuel cut. Response time (diagnosis value) > threshold value --> abnormal If the oxygen sensor voltage is small after recovering from a deceleration fuel cut, and remains small, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Shortest time change from lean (0.3 V O 2 output) to rich (0.5 V) when voltage changes from 0.25 V to 0.55 V > 2000 ms or Longest time under 0.25 V > or = 120000 ms Time Needed for Diagnosis: 1 time Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment 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 (judgment value), judge as a normal condition. Response time (diagnosis value) < or = threshold value --> normal Do not judge as a normal condition. Judge as OK and clear the NG if the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Shortest time change from lean (0.3 V O 2 output) to rich (0.5 V) when voltage changes from 0.25 V to 0.55 V < or = 2000 ms Time Needed for Diagnosis: 1 time

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

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

Sub feedback control: Not allowed

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

Detect the 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 150

ENABLE CONDITION (USED ONLY FOR MALFUNCTION JUDGMENT)

ENABLE CONDITION

Perform the diagnosis once after starting the engine.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Minimum output voltage > 0.15 V or Maximum output voltage < 0.55 V Time Needed for Diagnosis: 200000 ms Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Diagnosis of the rear oxygen sensor voltage low side Incomplete Minimum output voltage < or = 0.15 V Maximum output voltage > or = 0.55 V Time Needed for Diagnosis: Less than 1 second

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

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

Sub feedback control: Not allowed

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

Detect 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.

ENABLE CONDITIONS

Map 1

MAP 1 REFERENCE

Perform the diagnosis continuously at idling or at a constant speed after warming up the engine.

1. Abnormality Judgment 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 or more, judge that there is a fault in the fuel system. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value fsobd = (sglmd - tglmda) + faf + flat > or = Value of Map 2 In this case: sglmd = measured lambda tglmda = target lambda faf = main feedback compensation coefficient every 64 milliseconds flat = main feedback learning compensation coefficient Map 2 MAP 2 REFERENCE Amount of air (g (oz)/s) 0(0) 3.2 (0.11) 6.4 (0.23) 9.6 (0.34) 12.8 (0.45) 16 (0.56) 19.2 (0.68) fsobdL1 (%) 1.4 1.4 1.332 1.265 1.265 1.265 1.265 Time Needed for Diagnosis: 10 s x 5 time Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value fsobd = (sglmd - tglmda) + faf + flaf <1.2 Time Needed for Diagnosis: 10 s

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

1. When similar driving conditions are repeated 3 times and the result is OK.
2. When "Clear Memory" is performed

None

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

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.

ENABLE CONDITIONS

Map 1

MAP 1 REFERENCE

Perform the diagnosis continuously at idling or at a constant speed after warming up the engine.

1. Abnormality Judgment 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 or more, judge that there is a fault in the fuel system. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value fsobd = (sglmd - tglmda) + faf + flaf < Value of Map 2 In this case: sglmd = measured lambda tglmda = target lambda faf = main feedback compensation coefficient every 64 milliseconds flaf = main feedback learning compensation coefficient Map 2 MAP 1 REFERENCE Amount of air (g (oz)/s) 0(0) 3.2 (0.11) 6.4 (0.23) 9.6 (0.34) 12.8 (0.45) 16 (0.56) 19.2 (0.68) fsobdL1 (%) 0.6 0.6 0.668 0.735 0.735 0.735 0.735 Time Needed for Diagnosis: 10 s x 5 time Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK when the malfunction criteria below continues for 10 seconds. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value fsobd = (sglmd - tglmda) + faf + flat > or = 0.8 Time Needed for Diagnosis: 10 s

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

1. When similar driving conditions are repeated 3 times and the result is OK.
2. When "Clear Memory" is performed

Purge control solenoid valve control: Not allowed to purge.

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

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 151

DRIFT DIAGNOSIS

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Fuel level > or = 9.6 l (2.54 US gal, 2.11 lmp gal) Elapsed time after starting the engine > or = 20 s Engine coolant temperature - Engine coolant temperature at engine start > 10°C (50°F) Fuel temperature - Engine coolant temperature > or = 10°C (50°F) Battery voltage > or = 10.9 V Time Needed for Diagnosis: 120 s Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Fuel level > or = 9.6 l (2.54 US gal, 2.11 lmp gal) Elapsed time after starting the engine > or = 20 s Engine coolant temperature - Engine coolant temperature at engine start > 10°C (50°F) Fuel temperature - Engine coolant temperature < 10°C (50°F) Battery voltage > or = 10.9 V Engine coolant temperature < 75°C (167°F) Time Needed for Diagnosis: Less than 1 second

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

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

None

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

Stuck Diagnosis

ENABLE CONDITION

Always perform diagnosis after 20 seconds have passed since the engine started.

1. Abnormality Judgment Judge as NG when the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Accumulated amount of intake air > or = 551043 g (19435.29 oz) Fuel temperature difference between Max. and Min. < 2 °C (35.6 °F) Time Needed for Diagnosis: Less than 1 second Malfunction indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Fuel temperature difference between Max. and Min. > or = 2 °C (35.6 °F) Time Needed for Diagnosis: Less than 1 second

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

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

None

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

Detect the open or short circuit of fuel temperature sensor.

Judge as NG if out of specification.

Scheme 152

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage < 0.343951474 V Battery voltage > or = 10.9 V Time Needed for Diagnosis: 2500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage > or = 0.343951474 V Battery voltage > or = 10.9 V Time Needed for Diagnosis: Less than 1 second

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

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

None

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

Detect the open or short circuit of fuel temperature sensor.

Judge as NG if out of specification.

Scheme 153

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage > or = 4.716 V Battery voltage > or = 10.9 V Time Needed for Diagnosis: 2500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage < 4.716 V Battery voltage > or = 10.9 V Time Needed for Diagnosis: Less than 1 second

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

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

None

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

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.

ENABLE CONDITIONS

Map

MAP REFERENCE

MAP REFERENCE

Perform the diagnosis continuously after starting the engine.

1. Abnormality Judgment Judge as NG when the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Engine oil temperature < 15°C (59°F) After engine start oil temperature sensor characteristic diagnosis timer. > or = Judgment value for after engine start oil temperature sensor characteristic diagnosis timer After engine start oil temperature sensor characteristic diagnosis timer (timer for diagnosis). Timer stop at fuel cut 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. TOILCNT REFERENCE Vehicle speed km/h (MPH) 0 (0) 8 (5) 16 (9.9) 24 (14.9) 32 (19.9) 40 (24.9) 48 (29.8) 56 (34.8) Temperature °C (°F) -30 (-22) 64 ms 73.2 ms 83.9 ms 96.3 ms 113.2 ms 133.9 ms 160.2 ms 194.6 ms -20 (-4) 64 ms 73.3 ms 84 ms 96.6 ms 113.7 ms 135 ms 162 ms 197.4 ms -10 (14) 64 ms 73.4 ms 84.2 ms 96.9 ms 114.5 ms 136.4 ms 164.4 ms 201.5 ms 0 (32) 64 ms 73.5 ms 84.5 ms 97.4 ms 115.6 ms 138.5 ms 168 ms 207.6 ms 10 (50) 102.2 ms 114.8 ms 129.4 ms 146.7 ms 171.7 ms 203.4 ms 245.1 ms 302.1 ms After engine start oil temperature characteristic diagnosis timer judgment 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.
2. Normality Judgment Judge as OK and clear the NG if the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Engine oil temperature > or = 15 °C (59°F) Time Needed for Diagnosis: Less than 1 second

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

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

Oil temperature sensor process: Engine oil temperature is fixed at 70°C (158°F).

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

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

Judge as NG when outside of the judgment value.

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage < 0.166 V Time Needed for Diagnosis: 500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage > or = 0.166 V Time Needed for Diagnosis: Less than 1 second

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

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

Oil temperature sensor process: Engine oil temperature is fixed at 70°C (158°F).

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

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

Judge as NG when outside of the judgment value.

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage > or = 4.716 V Time Needed for Diagnosis: 500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage < 4.716 V Time Needed for Diagnosis: Less than 1 second

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

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

Oil temperature sensor process: Engine oil temperature is fixed at 70°C (158°F).

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

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

Judge as NG if out of specification.

Scheme 154

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sensor 2 input voltage < or = 0.926256 V Time Needed for Diagnosis: 24 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sensor 2 input voltage > 0.926256 V Time Needed for Diagnosis: 24 ms

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

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

Stop the continuity to the electronic throttle control motor. (Throttle opening is fixed to 6°.)

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

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

Judge as NG if out of specification.

Scheme 155

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sensor 2 input voltage > or = 4.858 V Time Needed for Diagnosis: 24 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sensor 2 input voltage < 4.858 V Time Needed for Diagnosis: 24 ms

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

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

Stop the continuity to the electronic throttle control motor. (Throttle opening is fixed to 6°.)

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

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

ENABLE CONDITIONS

Map 1

1. AT model

MAP 1 REFERENCE

1. MT model

MAP 1 REFERENCE

Map 2

1. AT model

MAP 2 REFERENCE

1. MT model

Vehicle speed < 64 km/h (39.8 MPH)

MAP 2 REFERENCE

Vehicle speed > or = 68 km/h (42.3 MPH)

MAP 2 REFERENCE

1. If conditions are met, it is possible to detect the misfires from idling to high engine speed. However, in case any engine load or breakage occurs, perform with the engine at idle.
2. Perform the diagnosis continuously.

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

DIAGNOSTIC VALUE

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 156

180° Interval Difference Method

DIAGNOSTIC VALUE

Scheme 157

360° Interval Difference Method

DIAGNOSTIC VALUE

Scheme 158

720° Interval Difference Method

DIAGNOSTIC VALUE

Scheme 159

1. FTP 1.5 times misfire (Misfire occurrence level which influences exhaust gas)
2. Abnormality Judgment Judgment Value (Judge that malfunction occurs when the misfire ratio is high in 1000 engine revs.) JUDGMENT VALUE Malfunction Criteria Threshold Value FTP emission judgment value > or = 20 x 100/2000% in 1000 revs. Time Needed for Diagnosis: 1000 engine revs. Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
3. Normality Judgment Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value FTP emission judgment value <20 x 100/2000% in 1000 revs. Time Needed for Diagnosis: 1000 engine revs.

1. Catalyst damage misfire (Misfire occurrence level damaging catalyst)
2. Abnormality Judgment Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Catalyst damage misfire judgment value > or = Value of Map 3 Map 3 MAP 3 REFERENCE Intake air (g(oz)/rev) 0.16 (0.01) 0.28 (0.01) 0.4 (0.01) 0.52 (0.02) 0.64 (0.02) 0.76 (0.03) 0.92 (0.03) 1.1 (0.04) Engine speed (rpm) 700 100 100 100 100 90 80 64 48 1000 100 100 100 100 90 80 63 44 1500 100 100 90 80 73 67 54 40 2000 80 80 80 80 68 57 51 44 2500 80 80 73 67 62 57 51 44 3000 67 67 62 57 51 44 44 44 3500 67 67 56 44 40 36 34 31 4000 57 57 44 31 24 20 20 20 4500 44 44 33 31 20 20 20 20 5000 44 44 38 31 20 20 20 20 5500 36 36 31 27 20 20 20 20 6000 20 20 20 20 20 20 20 20 6300 20 20 20 20 20 20 20 20 Time Needed for Diagnosis: 200 engine revs. Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
3. Normality Judgment Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Catalyst damage misfire judgment value < Value of Map 3 Time Needed for Diagnosis: 200 engine revs.

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

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

None

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

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

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

Note. For the detection standard, refer to DTC P0301. 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 160

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage < 0.243 V Time Needed for Diagnosis: 1000 ms Malfunction indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage > or = 0.243 V Time Needed for Diagnosis: Less than 1 second

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

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

None

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

Detect the open or short circuit of knock sensor.

Judge as NG if out of specification.

Scheme 161

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage > or = 4.709 V Time Needed for Diagnosis: 1000 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage < 4.709 V Time Needed for Diagnosis: Less than 1 second

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

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

None

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

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 162

Scheme 163

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Starter switch ON Crankshaft position sensor signal Not detected Battery voltage > or = 8 V Time Needed for Diagnosis: 3000 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Crankshaft position sensor signal Input exists Battery voltage > or = 8 V Time Needed for Diagnosis: Less than 1 second

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

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

None

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

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 164

Scheme 165

ENABLE CONDITION

Perform the diagnosis continuously under 3000 rpm engine speed.

1. Abnormality Judgment Judge as NG when the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Cylinder number identification Completed Amount of crank sensor signal during 1 rev. Not = 30 Time Needed for Diagnosis: 10 engine revs. Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Cylinder number identification Completed Amount of crank sensor signal during 1 rev. = 30 Time Needed for Diagnosis: Less than 1 second

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

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

None

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

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

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

Scheme 166

ENABLE CONDITIONS

Always perform the diagnosis continuously.

Abnormality Judgment

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

Judgment Value

JUDGMENT VALUE

Time Needed for Diagnosis: Engine two revolutions x 4 time

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

Normality Judgment

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

Judgment Value

JUDGMENT VALUE

Time Needed for Diagnosis: Two engine revs.

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

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

None

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

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 167

Scheme 168

ENABLE CONDITIONS

Always perform the diagnosis continuously at idle speed.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Position of camshaft position sensor signal Not between BTDC 10°CA and BTDC 80°CA Time Needed for Diagnosis: 10 engine revs. Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Position of camshaft position sensor signal Between BTDC 10°CA and BTDC 80°CA Time Needed for Diagnosis: Engine two revolutions

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

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

None

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

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 169

ENABLE CONDITIONS

Map

MAP REFERENCE

MAP REFERENCE

During deceleration fuel cut from 53 km/h (approx. 33 MPH) or more, perform diagnosis once.

Be careful of vehicle speed and engine speed. (Diagnosis will not be completed if the vehicle speed and engine speed conditions become out of specification due to deceleration.)

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).

Scheme 170

1. Abnormality Judgment Judge as NG when the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value PMON - (PMOF1 + PMOF2)/2 < 2.5 kPa (18.63 mmHg, 0.7 inHg) Time Needed for Diagnosis: 1 time Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value PMON - (PMOF1 + PMOF2)/2 > or = 2.5 kPa (18.63 mmHg, 0.7 inHg) Time Needed for Diagnosis: 1 time

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

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

A/F main learning = Not allowed.

Knock learning = Not allowed.

EGR control: Operation prohibited.

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

Detect the 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 171

ENABLE CONDITIONS

Perform the diagnosis only once at a constant 70 km/h (43.5 MPH) or higher.

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 Judgment If the duration of time while the following conditions are met is within the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sum |(ro2sad n - ro2sad n-1 )| / Sum |(sglmd n - sglmd n-1 )| > 15.5 Time Needed for Diagnosis: 30 - 55 seconds Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is within the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sum |(ro2sad n - ro2sad n-1 )| / Sum |(sglmd n - sglmd n-1 )] < or = 15.5 Time Needed for Diagnosis: 30 - 55 seconds

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

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

None

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

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

Scheme 172

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 173

MODE DESCRIPTION

Mode Table for Evaporative Emission Control System Diagnosis

EVAPORATIVE EMISSION CONTROL SYSTEM DIAGNOSIS MODE CHART

0.02-inch Diagnosis

Scheme 174

DIAGNOSIS MODE DESCRIPTION CHART

Map 1

MAP 1 REFERENCE

Map 2

MAP 2 REFERENCE

Map 3

MAP 3 REFERENCE

Pressure control solenoid valve

PCV controls the fuel tank pressure to be equal to the atmospheric air pressure. Normally, the solenoid is set to OFF. The valve opens and closes mechanically in accordance with the pressure difference between tank and atmospheric air, or tank and canister.

The valve is forcibly opened by setting the solenoid to ON at the time of diagnosis.

Scheme 175

Valve Operation and Air Flow

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

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

Scheme 176

PRESSURE CONDITION

When A < B (solenoid OFF)

Scheme 177

When B < C (solenoid OFF)

Scheme 178

When Solenoid is ON

Scheme 179

Drain valve

Drain valve controls the ambient air to be introduced to the canister.

Scheme 180

0.04-inch Diagnosis

ENABLE CONDITIONS

0.02-inch Diagnosis

ENABLE CONDITIONS

Map 4

MAP 4 REFERENCE

0.04-inch Diagnosis

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

0.02-inch Diagnosis

1. Perform the diagnosis 125 seconds or more at a constant engine speed of 50 km/h (31 MPH) or higher to judge as NG or OK.
2. If judgment cannot be made, repeat the diagnosis.
3. Pay attention to the fuel level.

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 2 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.

Scheme 181

Scheme 182

1. Abnormality Judgment If OK judgment cannot be made, extend Mode 2, and Judge as NG when the following conditions are established after predetermined amount of time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value DTC evptez - evptezha > 0.9 kPa (6.5 mmHg, 0.3 inHg) P0457 evptezini < or = 1.4 kPa (10.7 mmHg, 0.4 inHg) Time of 2 l (0.53 US gal, 0.44 lmp gal) or more fuel no sloshing > or = 40000 ms Time Needed for Diagnosis: 0 ms + 3000 ms + 13000 ms Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles. When judgment for purge control solenoid valve stuck open NG is made, end the evaporative diagnosis. Cancel the evaporative diagnosis when the OK/NG judgment for purge control solenoid valve stuck open cannot be made in Mode Z.
2. Normality Judgment Judge as OK and change to Mode A when the following conditions are established after predetermined time has passed since Mode 2 started. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value DTC evptez - evptezha < or = 0.4 kPa (3 mmHg, 0.1 inHg) P0457 Normal 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 evptezini < or = 1.4 kPa (10.7 mmHg, 0.4 inHg) evptez - evptezha > 0.9 kPa (6.5 mmHg, 0.3 inHg) 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) 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. 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 Judgment Judge as NG (large leakage) when the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value DTC Time to reach target negative pressure > or = 10000 ms + 25000 ms P0457 or Mode B time > or = 10000 ms (Min. pressure value in tank when in mode B) - (Tank pressure when mode B started) > -0.3 kPa (-2.5 mmHg, -0.1 inHg) 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. MODE C REFERENCE Tank pressure when starting calculation of P2 Time for advanced OK judgment -1.4 kPa (-10.5 mmHg, -0.4 inHg) 18600 ms 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 judgment value exceeds the threshold value, it is judged to be a malfunction. Abnormality Judgment 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. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value DTC P2 - 1.5 - x P1 > Value of Map 5 P0442 P2: Tank pressure that changes every 10000 ms in mode D P1: Tank pressure that changes every 10000 ms in mode A *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 5 MALFUNCTION CRITERIA LIMIT FOR EVAPORATION DIAGNOSIS Fuel temperature vs. Fuel level 25°C (77°F) 30°C (86°F) 35°C (95°F) 40°C (104°F) 45°C (113°F) 0 l (0 US gal, 0 lmp gal) 0.3 kPa (2.1 mmHg, 0.1 inHg) 0.3 kPa (2.2 mmHg, 0.1 inHg) 0.3 kPa (2.3 mmHg, 0.1 inHg) 0.3 kPa (2.35 mmHg, 0.1 inHg) 0.3 kPa (2.4 mmHg, 0.1 inHg) 10 l (2.64 US gal, 2.2 lmp gal) 0.3 kPa (2.1 mmHg, 0.1 inHg) 0.3 kPa (2.2 mmHg, 0.1 inHg) 0.3 kPa (2.3 mmHg, 0.1 inHg) 0.3 kPa (2.35 mmHg, 0.1 inHg) 0.3 kPa (2.4 mmHg, 0.1 inHg) 20 l (5.28 US gal, 4.4 lmp gal) 0.3 kPa (2.3 mmHg, 0.1 inHg) 0.3 kPa (2.4 mmHg, 0.1 inHg) 0.3 kPa (2.5 mmHg, 0.1 inHg) 0.3 kPa (2.6 mmHg, 0.1 inHg) 0.4 kPa (2.7 mmHg, 0.1 inHg) 30 l (7.93 US gal, 6.6 lmp gal) 0.4 kPa (2.9 mmHg, 0.1 inHg) 0.4 kPa (3.05 mmHg, 0.1 inHg) 0.4 kPa (3.15 mmHg, 0.1 inHg) 0.4 kPa (3.25 mmHg, 0.1 inHg) 0.4 kPa (3.35 mmHg, 0.1 inHg) 40 l (10.57 US gal, 8.8 lmp gal) 0.4 kPa (2.9 mmHg, 0.1 inHg) 0.4 kPa (3.15 mmHg, 0.1 inHg) 0.4 kPa (3.3 mmHg, 0.1 inHg) 0.5 kPa (3.4 mmHg, 0.1 inHg) 0.5 kPa (3.5 mmHg, 0.1 inHg) 50 l (13.21 US gal, 11 lmp gal) 0.4 kPa (3.2 mmHg, 0.1 inHg) 0.4 kPa (3.3 mmHg, 0.1 inHg) 0.5 kPa (3.5 mmHg, 0.1 inHg) 0.5 kPa (3.6 mmHg, 0.1 inHg) 0.5 kPa (3.7 mmHg, 0.1 inHg) 60 l (15.85 US gal, 13.2 lmp gal) 0.4 kPa (3.2 mmHg, 0.1 inHg) 0.4 kPa (3.3 mmHg, 0.1 inHg) 0.5 kPa (3.5 mmHg, 0.1 inHg) 0.5 kPa (3.6 mmHg, 0.1 inHg) 0.5 kPa (3.7 mmHg, 0.1 inHg) 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) 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. 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 judgment or cancel the diagnosis according to the value of P2. Normality Judgment Judge as OK when the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Advanced OK judgment 1 Mode D time > or = 0 ms +10000 ms Tank internal pressure < or = Value of Map 6 Advanced OK judgment 2 Mode D time > or = 0 ms + 200000 ms P2 < or = Value of Map 7 Map 6 MAP 6 REFERENCE Fuel level ( l , US gal, lmp gal) 0, 0, 0 10, 2.64, 2.2 20, 5.28, 4.4 30, 7.93, 6.6 40, 10.57, 8.8 50, 13.21, 11 60, 15.85, 13.2 Tank pressure (kPa, mmHg, inHgl) -1.9, -14.62, -0.6 -1.9, -14.62, -0.6 -1.9, -14.59, -0.6 -1.9, -14.56, -0.6 -1.9, -14.42, -0.6 -1.9, -14.28, -0.6 -1.9, -14.28, -0.6 Map 7 MAP 7 REFERENCE Fuel level ( l , US gal, lmp gal) 0, 0, 0 10, 2.64, 2.2 20, 5.28, 4.4 30, 7.93, 6.6 40, 10.57, 8.8 50, 13.21, 11 60, 15.85, 13.2 Tank pressure (kPa, mmHg, inHgl) 0.9, 7, 0.3 0.9, 7, 0.3 0.9, 7.05, 0.3 0.9, 7.1, 0.3 1.1, 8.2, 0.3 1.3, 9.6, 0.4 1.3, 9.6, 0.4 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).
3. Abnormality Judgment Judge as NG when the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value P1 < Value of Map 8 Map 8 Malfunction criteria limit for evaporation diagnosis MAP 8 MALFUNCTION CRITERIA LIMIT FOR EVAPORATION DIAGNOSIS Time (evpdset) vs. Fuel level 0 ms 30000 ms 50000 ms 100000 ms 160000 ms 200000 ms 0 l (0 US gal, 0 lmp gal) 0 kPa (0 mmHg, 0 inHg) 0.1 kPa (0.5 mmHg, 0 inHg) 0.2 kPa (1.7 mmHg, 0.1 inHg) 0.4 kPa (2.7 mmHg, 0.1 inHg) 0.4 kPa (2.7 mmHg, 0.1 inHg) 0.4 kPa (2.7 mmHg, 0.1 inHg) 10 l (2.64 US gal, 2.2 lmp gal) 0 kPa (0 mmHg, 0 inHg) 0.1 kPa (0.5 mmHg, 0 inHg) 0.2 kPa (1.7 mmHg, 0.1 inHg) 0.4 kPa (2.7 mmHg, 0.1 inHg) 0.4 kPa (2.7 mmHg, 0.1 inHg) 0.4 kPa (2.7 mmHg, 0.1 inHg) 20 l (5.28 US gal, 4.4 lmp gal) 0 kPa (0 mmHg, 0 inHg) 0.1 kPa (0.5 mmHg, 0 inHg) 0.2 kPa (1.7 mmHg, 0.1 inHg) 0.4 kPa (2.7 mmHg, 0.1 inHg) 0.4 kPa (2.7 mmHg, 0.1 inHg) 0.4 kPa (2.7 mmHg, 0.1 inHg) 30 l (7.93 US gal, 6.6 lmp gal) 0 kPa (0 mmHg, 0 inHg) 0.1 kPa (0.5 mmHg, 0 inHg) 0.2 kPa (1.7 mmHg, 0.1 inHg) 0.4 kPa (2.7 mmHg, 0.1 inHg) 0.4 kPa (2.7 mmHg, 0.1 inHg) 0.4 kPa (2.7 mmHg, 0.1 inHg) 40 l (10.57 US gal, 8.8 lmp gal) 0 kPa (0 mmHg, 0 inHg) 0.1 kPa (0.5 mmHg, 0 inHg) 0.2 kPa (1.85 mmHg, 0.1 inHg) 0.3 kPa (2.5 mmHg, 0.1 inHg) 0.3 kPa (2.5 mmHg, 0.1 inHg) 0.3 kPa (2.5 mmHg, 0.1 inHg) 50 l (13.21 US gal, 11 lmp gal) 0 kPa (0 mmHg, 0 inHg) 0.1 kPa (0.5 mmHg, 0 inHg) 0.3 kPa (2 mmHg, 0.1 inHg) 0.3 kPa (2.3 mmHg, 0.1 inHg) 0.3 kPa (2.3 mmHg, 0.1 inHg) 0 kPa (0 mmHg, 0 inHg) 60 l (15.85 US gal, 13.2 lmp gal) 0 kPa (0 mmHg, 0 inHg) 0.1 kPa (0.5 mmHg, 0 inHg) 0.3 kPa (2 mmHg, 0.1 inHg) 0.3 kPa (2.3 mmHg, 0.1 inHg) 0.3 kPa (2.3 mmHg, 0.1 inHg) 0 kPa (0 mmHg, 0 inHg) 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.
4. Normality Judgment Judge as OK when the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value P1 > Value of Map 9 Map 9 Malfunction criteria limit for evaporation diagnosis MAP 9 MALFUNCTION CRITERIA LIMIT FOR EVAPORATION DIAGNOSIS Time (evpdset) vs. Fuel level 0 ms 30000 ms 50000 ms 100000 ms 160000 ms 200000 ms 0 l (0 US gal, 0 lmp gal) 0.1 kPa (1 mmHg, 0 inHg) 0.5 kPa (3.5 mmHg, 0.1 inHg) 0.6 kPa (4.2 mmHg, 0.2 inHg) 0.6 kPa (4.2 mmHg, 0.2 inHg) 0.6 kPa (4.2 mmHg, 0.2 inHg) 0.6 kPa (4.2 mmHg, 0.2 inHg) 10 l (2.64 US gal, 2.2 lmp gal) 0.1 kPa (1 mmHg, 0 inHg) 0.5 kPa (3.5 mmHg, 0.1 inHg) 0.6 kPa (4.2 mmHg, 0.2 inHg) 0.6 kPa (4.2 mmHg, 0.2 inHg) 0.6 kPa (4.2 mmHg, 0.2 inHg) 0.6 kPa (4.2 mmHg, 0.2 inHg) 20 l (5.28 US gal, 4.4 lmp gal) 0.1 kPa (1 mmHg, 0 inHg) 0.4 kPa (3.25 mmHg, 0.1 inHg) 0.5 kPa (4.1 mmHg, 0.2 inHg) 0.5 kPa (4.1 mmHg, 0.2 inHg) 0.5 kPa (4.1 mmHg, 0.2 inHg) 0.5 kPa (4.1 mmHg, 0.2 inHg) 30 l (7.93 US gal, 6.6 lmp gal) 0.1 kPa (1 mmHg, 0 inHg) 0.4 kPa (3 mmHg, 0.1 inHg) 0.5 kPa (3.9 mmHg, 0.2 inHg) 0.5 kPa (3.9 mmHg, 0.2 inHg) 0.5 kPa (3.9 mmHg, 0.2 inHg) 0.5 kPa (3.9 mmHg, 0.2 inHg) 40 l (10.57 US gal, 8.8 lmp gal) 0.1 kPa (1 mmHg, 0 inHg) 0.3 kPa (2.25 mmHg, 0.1 inHg) 0.5 kPa (3.4 mmHg, 0.1 inHg) 0.5 kPa (3.4 mmHg, 0.1 inHg) 0.5 kPa (3.4 mmHg, 0.1 inHg) 0.5 kPa (3.4 mmHg, 0.1 inHg) 50 l (13.21 US gal, 11 lmp gal) 0.1 kPa (1 mmHg, 0 inHg) 0.2 kPa (1.5 mmHg, 0.1 inHg) 0.4 kPa (2.9 mmHg, 0.1 inHg) 0.4 kPa (2.9 mmHg, 0.1 inHg) 0.4 kPa (2.9 mmHg, 0.1 inHg) 0.4 kPa (2.9 mmHg, 0.1 inHg) 60 l (15.85 US gal, 13.2 lmp gal) 0.1 kPa (1 mmHg, 0 inHg) 0.2 kPa (1.5 mmHg, 0.1 inHg) 0.4 kPa (2.9 mmHg, 0.1 inHg) 0.4 kPa (2.9 mmHg, 0.1 inHg) 0.4 kPa (2.9 mmHg, 0.1 inHg) 0.4 kPa (2.9 mmHg, 0.1 inHg) 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

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

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

None

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

Detect open or short circuit of the drain valve.

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

Scheme 183

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Elapsed time after starting the engine > or = 1 second Terminal output voltage when ECM outputs OFF signal Low Time Needed for Diagnosis: 2500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Elapsed time after starting the engine > or = 1 second Terminal output voltage when ECM outputs OFF signal High Time Needed for Diagnosis: Less than 1 second

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

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

Pressure control solenoid valve control: Open the pressure control solenoid valve.

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

Detect open or short circuit of the drain valve.

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

Scheme 184

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Elapsed time after starting the engine > or = 1 second Terminal output voltage when ECM outputs ON signal High Time Needed for Diagnosis: 2500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Elapsed time after starting the engine > or = 1 second Terminal output voltage when ECM outputs ON signal Low Time Needed for Diagnosis: Less than 1 second

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

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

Pressure control solenoid valve control: Open the pressure control solenoid valve.

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

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 185

ENABLE CONDITIONS

1. Perform the diagnosis continuously after 60 s have passed since the engine started.
2. Pay attention to the fuel level and temperature.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Number of times that the difference between the Max. fuel level every 60 s and Min. fuel level every 60 s is 2 l (0.53 US gal, 0.44 lmp gal) or more (with enable condition established) > or = 16 time Maximum - Minimum tank pressure (with enable condition completed) < 0 kPa (0.375 mmHg, 0 inHg) Maximum - Minimum fuel temperature (with enable condition completed) > or = 7 °C (44.6 °F) 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 judgment 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 judgment. If the difference between the Max. fuel level every 60 s and Min. fuel level every 60 s is 2 l (0.53 US gal, 0.44 lmp gal) or more, the diagnosis counter counts up. Time Needed for Diagnosis: 60 s x 16 time or more Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Maximum - Minimum tank pressure > or = 0 kPa (0.375 mmHg, 0 inHg) Time Needed for Diagnosis: Less than 1 second

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

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

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

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

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

Judge as NG if out of specification.

Scheme 186

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Fuel tank pressure < -7.5 kPa (-55.9 mmHg, -2.2 inHg) Battery voltage > or = 10.9 V Time Needed for Diagnosis: 15000 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Fuel tank pressure > or = -7.5 kPa (-55.9 mmHg, -2.2 inHg) Battery voltage > or = 10.9 V Time Needed for Diagnosis: Less than 1 second

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

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

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

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

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

Judge as NG if out of specification.

Scheme 187

ENABLE CONDITIONS

Perform the diagnosis when purging enable conditions are met without idling.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Fuel tank pressure > or = 7.9 kPa (59.6 mmHg, 2.3 inHg) Fuel temperature < 35 °C (95 °F) Barometric pressure > or = 75 kPa (563 mmHg, 22.2 inHg) Time Needed for Diagnosis: 15000 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Fuel tank pressure < 7.9 kPa (59.6 mmHg, 2.3 inHg) Time Needed for Diagnosis: Less than 1 second

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

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

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

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

Note. For the detection standard, refer to DTC P0442. 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. 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 188

ENABLE CONDITION

Always perform the diagnosis after starting the engine.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Duty ratio of "ON" < 0.75 Terminal output voltage Low Time Needed for Diagnosis: 2500 ms Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Terminal output voltage High Time Needed for Diagnosis: Less than 1 second

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

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

None

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

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 189

ENABLE CONDITION

Always perform the diagnosis after starting the engine.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Duty ratio of "ON" > or = 0.25 Terminal output voltage High Time Needed for Diagnosis: 2500 ms Malfunction indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Terminal output voltage Low Time Needed for Diagnosis: Less than 1 second

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

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

None

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

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 190

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment Judge as NG when the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Accumulated amount of intake air > or = 330957 g (11672.85 oz) Max. - Min. values of fuel level output < 2.6 l (0.69 US gal, 0.57 lmp gal) Battery voltage > or = 10.9 V Engine speed < 6000 rpm Elapsed time after starting the engine > or = 5000 ms Time Needed for Diagnosis: Less than 1 second Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the following conditions are established. Judgement Value JUDGEMENT VALUE Malfunction Criteria Threshold Value Accumulated amount of intake air > or = 330957 g (11672.85 oz) Max. - Min. values of fuel level output > or = 2.6 l (0.69 US gal, 0.57 lmp gal) Battery voltage > or = 10.9 V Engine speed < 6000 rpm Elapsed time after starting the engine > or = 5000 ms Time Needed for Diagnosis: Less than 1 second

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

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

None

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

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

Scheme 191

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Elapsed time after starting the engine > or = 3000 ms Output voltage < 0.173 V Time Needed for Diagnosis: 2500 ms Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Elapsed time after starting the engine > or = 3000 ms Output voltage > or = 0.173 V Time Needed for Diagnosis: Less than 1 second

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

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

None

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

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

Scheme 192

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Elapsed time after starting the engine > or = 3000 ms Output voltage > or = 7.212 V Time Needed for Diagnosis: 1000 ms Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Elapsed time after starting the engine > or = 3000 ms Output voltage < 7.212 V Time Needed for Diagnosis: Less than 1 second

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

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

None

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

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.

ENABLE CONDITIONS

1. Always perform the diagnosis continuously at idle speed.
2. Pay attention to the fuel level.

Calculate the Max. value (DELFLMAX) and cumulative value (SUMFL) of output voltage variation of fuel level sensor during 12.2 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.

Scheme 193

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Integrated times of the condition reaching follows, > or = 4 time DELFLMAX > or = Value from Map or SUMFL > or = 25.92 V At this time, DELFLMAX: Maximum difference of sensor output for 12288 ms SUMFL: Integrated value of the sensor output deviation for 12288 ms Map MAP REFERENCE Fuel level ( l , US gal, lmp gal) 0,0,0 10, 2.64, 2.2 20, 5.28, 4.4 30, 7.93, 6.6 40, 10.57, 8.8 50, 13.21, 11 60, 15.85, 13.2 Measured voltage (V) 0.27 0.27 0.426 0.582 0.738 0.894 0.894 The diagnosis counter does not count up when the following conditions are completed within 12288 ms. CONDITIONS REFERENCE Maximum value - Minimum value of change of tank pressure during 12288 ms > or = 0 kPa (0.375 mmHg, 0 inHg) Maximum value - Minimum value of battery voltage during 12288 ms > or = 1.09 V Time Needed for Diagnosis: 12288 ms x 4 time Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value DELFLMAX < Value from Map SUMFL < 25.92 V At this time, DELFLMAX: Maximum difference of sensor output for 12288 ms SUMFL: Integrated value of the sensor output deviation for 12288 ms Time Needed for Diagnosis: 12288 ms

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

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

None

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

Judge as NG when outside of the judgment value.

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

Vehicle speed signals are taken in to the ABS control module and hydraulic control unit, and normal/erroneous data of the ABS wheel speed sensor is received by CAN communication from the ABS control module and hydraulic control unit.

ENABLE CONDITION

Always perform diagnosis more than 2000 ms after starting the engine.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Front ABS wheel speed sensor status Malfunction Either of the following is established Front left wheel speed > or = 300 km/h (186.4 MPH) Front right wheel speed > or = 300 km/h (186.4 MPH) Time Needed for Diagnosis: 2500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Front left wheel speed > 0 km/h (0 MPH) and < 300 km/h (186.4 MPH) Front right wheel speed > 0 km/h (0 MPH) and < 300 km/h (186.4 MPH) Time Needed for Diagnosis: 2500 ms

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

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

1. Accelerator sensor signal process: Not allowed fully closed point learning. (Hold previous value)
2. Vehicle speed sensor signal process: Vehicle speed = 10 km/h (6 MPH)
3. Fuel cut control: Not allowed vehicle speed 0 km/h (0 MPH) fuel cut. Normally the high vehicle speed fuel cut performs on vehicle speed condition and engine speed, but perform the fuel cut only on engine speed condition (4,400 rpm or more).
4. ISC control: Open loop compensation is set to specified value (1 g (0.04 oz)/s). Not allowed ISC feedback volume calculation.
5. Air conditioner control: Not allowed air conditioner cut at accelerating.
6. Radiator fan control: Both main and sub fan ON
7. Gear ratio judgment: Control as fixed in sixth gear

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

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.

ENABLE CONDITION

Perform the diagnosis continuously at idling after warming up engine.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Actual engine speed - Targeted engine speed <-100 rpm Feedback value for ISC Max. Time Needed for Diagnosis: 10 s x 3 time Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Actual engine speed - Targeted engine speed > or = -100 rpm Time Needed for Diagnosis: 10 s

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

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

None

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

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.

ENABLE CONDITION

Perform the diagnosis continuously at idling after warming up engine.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Actual - Target engine speed > or = 200 rpm Feedback value for ISC Min. Time Needed for Diagnosis: 10 s x 3 time Malfunction Indicator Light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Actual - Target engine speed < 200 rpm Time Needed for Diagnosis: 10 s

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

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

None

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

Detect the open or short circuit of starter SW.

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

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Engine condition After engine starting Starter OFF signal Not detected Battery voltage > or = 8 V Time Needed for Diagnosis: 180000 ms Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Starter OFF signal Detected Battery voltage > or = 8 V Time Needed for Diagnosis: Less than 1 second

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

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

None

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

DIAGNOSIS OUTLINE

When starting the engine.

Perform the diagnosis only after starting the engine.

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 AT is not possible, judge as NG if data from the AT is not normal.

ECM and TCM are connected by high speed CAN.

(Common Specifications)

CAN Protocol 2.0 B (Active)

Frame Format: 11 Bit ID Frame (Standard Frame)

(High speed CAN)

Conforms to ISO11898

Communication Speed: 500 kbps

ENABLE CONDITIONS

Perform the diagnosis continuously after starting the engine.

1. Abnormality Judgment Judge as NG when the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > 10.9 V Starter switch OFF Engine run bus off flag or error warning flag set (error) or ID received from body integrated unit, TCM, ABSCM or VDCCM None during 500 milli-seconds or Data updated from body integrated unit, TCM, ABSCM or VDCCM None during 500 milli-seconds Time Needed for Diagnosis: Less than 1 second Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > 10.9 V Starter switch OFF Engine run bus off flag or error warning flag clear (No error) ID received from body integrated unit, TCM, ABSCM and VDCCM Yes Data updated from body integrated unit, TCM, ABSCM and VDCCM Yes Time Needed for Diagnosis: 1000 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

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

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

None

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

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.

ENABLE CONDITIONS

Diagnosis with the initial routine.

Perform the diagnosis as soon as the ignition switch is turned to ON.

Abnormality Judgment

Judge as NG if the criteria below are met.

Judgment Value

JUDGMENT VALUE

Time Needed for Diagnosis: Undetermined

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

Normality Judgment

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

Judgment Value

JUDGMENT VALUE

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

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

None

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

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

ENABLE CONDITIONS

Always perform the diagnosis continuously.

Abnormality Judgment

Judge as NG if the criteria below are met.

Judgment Value

JUDGMENT VALUE

Time Needed for Diagnosis: Undetermined

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

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

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

Stop the continuity to the electronic throttle control motor. (Throttle opening is fixed to 6°.)

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

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 194

ENABLE CONDITIONS

(1) - (4): Always perform the diagnosis continuously.

(5): Always perform the diagnosis continuously when idling.

(6): Perform the diagnosis when the brake pedal is depressed.

(7): Always perform the diagnosis continuously.

(8): Always perform the diagnosis continuously when the cruise control pedal is not operating.

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

Judgment Value

JUDGMENT VALUE

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.

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

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

Stop the continuity to the electronic throttle control motor. (Throttle opening is fixed to 6°.)

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

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 195

ENABLE CONDITIONS

Always perform the diagnosis continuously when the electronic throttle control is operating.

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

Judgment Value

JUDGMENT VALUE

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 Judgment Value

Scheme 196

Details of Judgment time (The actual opening angle < or = target opening angle is always 1000 milliseconds)

Scheme 197

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

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

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

Stop the continuity to the electronic throttle control motor. (Throttle opening is fixed to 6°.)

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

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

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V MIL lighting request from TCM YES Time Needed for Diagnosis: 2500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V MIL lighting request from TCM None Time Needed for Diagnosis: Less than 1 second

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

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

None

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

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.

ENABLE CONDITIONS

Perform the diagnosis continuously in 2 seconds after starting the engine.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Neutral switch signal in ECM when "P"/"N" range in TCM are "OFF" and when the other switches are "ON" LOW (ON) Time Needed for Diagnosis: 100 time Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Neutral switch signal in ECM when "P"/"N" range in TCM are "OFF" and when the other switches are "ON" HIGH (OFF) Time Needed for Diagnosis: Less than 1 second

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

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

Control of cruise control: Control prohibited

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

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.)

ENABLE CONDITIONS

Perform the diagnosis continuously in 2 seconds after starting the engine.

1. Abnormality Judgment Judge NG when the malfunction criteria below are completed determined times or more after the neutral SW change. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Neutral switch signal (while changing from a to b below) LOW (ON) continues. Driving condition change Engine speed 600 rpm - 900 rpm & Vehicle speed = 0 km/h (0 MPH) Engine speed 1600 rpm - 900 rpm & Vehicle speed > or = 0 km/h (0 MPH) From a) to b) Time Needed for Diagnosis: 3 time Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear NG when there is change in the neutral SW. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Neutral switch signal (while changing from a to b below) Changes to HIGH (OFF). Driving condition change Engine speed 600 rpm - 900 rpm & Vehicle speed = 0 km/h (0 MPH) Engine speed 1600 rpm - 900 rpm & Vehicle speed > or = 0 km/h (0 MPH) From a) to b) Time Needed for Diagnosis: Less than 1 second

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

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

Control of cruise control: Control prohibited

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

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.

ENABLE CONDITIONS

Perform the diagnosis continuously in 2 seconds after starting the engine.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Neutral switch signal in ECM when "P"/"N" range in TCM are "ON" and when the other switches are "OFF" HIGH (OFF) Time Needed for Diagnosis: 100 time Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Neutral switch signal in ECM when "P"/"N" range in TCM are "ON" and when the other switches are "OFF" LOW (ON) Time Needed for Diagnosis: Less than 1 second

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

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

Control of cruise control: Control prohibited

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

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.)

ENABLE CONDITIONS

Perform the diagnosis continuously in 2 seconds after starting the engine.

1. Abnormality Judgment Judge NG when the malfunction criteria below are completed determined times or more after the neutral SW change. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Neutral switch signal (while changing from a to b below) HIGH (OFF) continues. Driving condition change Engine speed 600 rpm - 900 rpm & Vehicle speed = 0 km/h (0 MPH) Engine speed 1600 rpm - 900 rpm & Vehicle speed > or = 0 km/h (0 MPH) From a) to b) Time Needed for Diagnosis: 3 time Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear NG when there is change in the neutral SW. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Neutral switch signal (while changing from a to b below) Changes to LOW (ON). Driving condition change Engine speed 600 rpm - 900 rpm & Vehicle speed = 0 km/h (0 MPH) Engine speed 1600 rpm - 900 rpm & Vehicle speed > or = 0 km/h (0 MPH) From a) to b) Time Needed for Diagnosis: Less than 1 second

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

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

Control of cruise control: Control prohibited

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

Detect that X value remains low.

Judge as NG when lambda value is abnormal in accordance with X 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.

DIAGNOSIS OUTLINE

Scheme 198

ENABLE CONDITIONS

Perform diagnosis continuously at a constant speed of 20 km/h (12.4 MPH) or more after 60000 ms have passed since the engine started.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value lambda value < 0.85 Time Needed for Diagnosis: 10000 ms Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value lambda value > or = 0.85 Time Needed for Diagnosis: Less than 1 second

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

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

1. Front oxygen (A/F) sensor main learning compensation: Not allowed to calculate.
2. Front oxygen (A/F) sensor sub learning compensation: Not allowed to calculate.
3. Purge control: Not allowed to purge.

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

Detect that lambda value remains high.

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.

DIAGNOSIS OUTLINE

Scheme 199

ENABLE CONDITIONS

Perform diagnosis continuously at a constant speed of 20 km/h (12.4 MPH) or more after 60000 ms have passed since the engine started.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value lambda value > 1.15 Time Needed for Diagnosis: 10000 ms Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value lambda value < or = 1.15 Time Needed for Diagnosis: Less than 1 second

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

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

1. Front oxygen (A/F) sensor main learning compensation: Not allowed to calculate.
2. Front oxygen (A/F) sensor sub learning compensation: Not allowed to calculate.
3. Purge control: Not allowed to purge.

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

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 200

ENABLE CONDITIONS

1. Ignition switch ON --> OFF
2. Ignition switch OFF --> ON (Only after clearing memory)

1. Abnormality Judgment Judge as NG when the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Opening variation after continuity is set to OFF <2° Time Needed for Diagnosis: 24 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Opening variation after continuity is set to OFF > or = 2° Time Needed for Diagnosis: 3400 ms

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

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

Throttle opening is fixed to 6°.

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

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

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

Scheme 201

ENABLE CONDITIONS

Always perform the diagnosis after starting the engine.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Elapsed time after starting the engine > or = 1 second Terminal output voltage when ECM outputs OFF signal Low Time Needed for Diagnosis: 2500 ms Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Elapsed time after starting the engine > or = 1 second Terminal output voltage when ECM outputs OFF signal High Time Needed for Diagnosis: Less than 1 second

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

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

None

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

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

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

Scheme 202

ENABLE CONDITIONS

Always perform the diagnosis after starting the engine.

Diagnostic Trouble Code (DTC) Detecting Criteria

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Elapsed time after starting the engine > or = 1 second Terminal output voltage when ECM outputs ON signal High Time Needed for Diagnosis: 2500 ms Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Elapsed time after starting the engine > or = 1 second Terminal output voltage when ECM outputs ON signal Low Time Needed for Diagnosis: Less than 1 second

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

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

None

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

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

Judge as NG when fuel tank pressure is low.

Scheme 203

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Fuel tank pressure < or = -4 kPa (-30 mmHg, -1.2 inHg) Time Needed for Diagnosis: 3000 s Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Fuel tank pressure > -4 kPa (-30 mmHg, -1.2 inHg) Cumulative time when all the malfunction criteria below are met. > or = 30000 s Purge control solenoid valve duty Not = 0 Fuel temperature -10°C (14°F) - 70 °C (158 °F) Intake manifold relative pressure > or = -26.7 kPa (-200 mmHg, -7.9 inHg) Time Needed for Diagnosis: Less than 1 second

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

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

Pressure control solenoid valve control: Open the pressure control solenoid valve.

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

Detect the blow-by hose disconnection abnormality.

Judge as NG when the diagnosis terminal voltage is high.

Scheme 204

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Engine condition After engine starting Positive crankcase ventilation diagnosis voltage High Time Needed for Diagnosis: 2500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Battery voltage > or = 10.9 V Engine condition After engine starting Positive crankcase ventilation diagnosis voltage Low Time Needed for Diagnosis: Less than 1 second

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

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

None

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

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

Scheme 205

ENABLE CONDITIONS

Perform diagnosis continuously during EGR operation.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Terminal voltage level when ECM outputs OFF signal Low level or Terminal voltage level when EGR operates Low level Time Needed for Diagnosis: 2500 ms Malfunction Indicator Light: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Terminal voltage level when ECM outputs OFF signal High level Terminal voltage level when EGR operates High level Time Needed for Diagnosis: 128 ms

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

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

1. Front oxygen (A/F) sensor main learning compensation: Not allowed to calculate.
2. Knock sensor learning compensation: Calculation prohibited.
3. EGR control: Operation prohibited.

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

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

Scheme 206

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Terminal voltage level when ECM outputs OFF signal High level or Terminal voltage level when EGR operates High level Time Needed for Diagnosis: 2500 ms Malfunction Indicator Light: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Terminal voltage level when ECM outputs OFF signal Low level Terminal voltage level when EGR operates Low level Time Needed for Diagnosis: 128 ms

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

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

1. Front oxygen (A/F) sensor main learning compensation: Not allowed to calculate.
2. Knock sensor learning compensation: Calculation prohibited.
3. EGR control: Operation prohibited.

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

Note. For the detection standard, refer to DTC P1492. 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. 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. 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. 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. 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. 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.

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Voltage of back-up power supply Low Battery voltage > or = 10.9 V Engine condition After engine starting Time Needed for Diagnosis: 2500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Voltage of back-up power supply High Battery voltage > or = 10.9 V Engine condition After engine starting Time Needed for Diagnosis: Less than 1 second

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

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

None

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

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

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

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

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

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

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

Note. For the detection standard, refer to DTC P0513. 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.

1. Idle speed diagnosis

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

ENABLE CONDITION

Perform the diagnosis at cold start.

1. Exhaust gas temperature diagnosis

Abnormality Judgment

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.

Judgment Value

JUDGMENT VALUE

Map

MAP REFERENCE

Time Needed for Diagnosis: 14 seconds

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

Normality Judgment

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

Judgment Value

JUDGMENT VALUE

Time Needed for Diagnosis: Less than 1 second

1. Idle speed diagnosis Abnormality Jugement Judge as NG when the following conditions are established after the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Continuous time of (Target engine speed - Actual engine speed > -300 rpm) > or = 6000 ms Continuous time of (actual retard amount > 30°CA) > or = 0 ms Time Needed for Diagnosis: 14 seconds Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles. Normality Judgment Judge as OK and clear the NG if the following conditions are established. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Continuous time of (Target engine speed - Actual engine speed > -300 rpm) < 6000 ms Continuous time of (actual retard amount > 30°CA) < 0 ms Time Needed for Diagnosis: Less than 1 second

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

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

None

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

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 207

ENABLE CONDITIONS

Perform the diagnosis continuously when the vehicle is idling or running at a constant speed of 80 km/h (50 MPH) or more.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sub feedback learning value < -0.04 Time Needed for Diagnosis: 5 s x 1 time Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sub feedback learning value > or = -0.04 +0 Time Needed for Diagnosis: 5 s

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

1. When similar driving conditions are repeated 3 times and the result is OK.
2. When "Clear Memory" is performed

None

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

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 208

ENABLE CONDITIONS

Perform the diagnosis continuously when the vehicle is idling or running at a constant speed of 80 km/h (50 MPH) or more.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sub feedback learning value > or = 0.04 Time Needed for Diagnosis: 5 s x 1 time Malfunction indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sub feedback learning value < 0.04 + - 0.002 Time Needed for Diagnosis: 5 s

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

1. When similar driving conditions are repeated 3 times and the result is OK.
2. When "Clear Memory" is performed

None

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

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

Scheme 209

ENABLE CONDITIONS

Always perform the diagnosis continuously.

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

Judgment Value

JUDGMENT VALUE

Time Needed for Diagnosis

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

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

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

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

Stop the continuity to the electronic throttle control motor. (Throttle opening is fixed to 6°.)

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

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

Scheme 210

ENABLE CONDITIONS

Always perform the diagnosis continuously.

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

Judgment Value

JUDGMENT VALUE

Time Needed for Diagnosis

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

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

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

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

Stop the continuity to the electronic throttle control motor. (Throttle opening is fixed to 6°.)

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

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

Scheme 211

ENABLE CONDITIONS

1. When ignition switch ON --> OFF
2. Ignition switch OFF --> ON (Only after clearing memory)

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

Judgment Value

JUDGMENT VALUE

Time Needed for Diagnosis

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

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

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

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

Stop the continuity to the electronic throttle control motor. (Throttle opening is fixed to 6°.)

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

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

Scheme 212

ENABLE CONDITIONS

Perform the diagnosis at full closed point learning.

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

Judgment Value

JUDGMENT VALUE

Time Needed for Diagnosis: 8 - 80 milliseconds

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

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

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

Stop the continuity to the electronic throttle control motor. (Throttle opening is fixed to 6°.)

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

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

Judge as NG if out of specification.

Scheme 213

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sensor 1 input voltage < 0.217 V Time Needed for Diagnosis: 100 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sensor 1 input voltage > or = 0.217 V Time Needed for Diagnosis: 100 ms

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

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

1. Single malfunction: Control with normal sensor
2. Simultaneous failure: Throttle opening is fixed to 6°.

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

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

Judge as NG if out of specification.

Scheme 214

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sensor 1 input voltage > or = 4.783 V Time Needed for Diagnosis: 32 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sensor 1 input voltage < 4.783 V Time Needed for Diagnosis: 32 ms

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

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

1. Single malfunction: Control with normal sensor
2. Simultaneous failure: Throttle opening is fixed to 6°.

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

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

Judge as NG if out of specification.

Scheme 215

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sensor 2 input voltage < 0.217 V Time Needed for Diagnosis: 100 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sensor 2 input voltage > or = 0.217 V Time Needed for Diagnosis: 100 ms

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

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

1. Single malfunction: Control with normal sensor
2. Simultaneous failure: Throttle opening is fixed to 6°.

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

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

Judge as NG if out of specification.

Scheme 216

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sensor 2 input voltage > or = 4.783 V Time Needed for Diagnosis: 100 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Sensor 2 input voltage < 4.783 V Time Needed for Diagnosis: 100 ms

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

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

1. Single malfunction: Control with normal sensor
2. Simultaneous failure: Throttle opening is fixed to 6°.

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

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

Scheme 217

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Signal difference between two sensors > Value from Map Map MAP REFERENCE Throttle position sensor 1 opening angle (°) = d 0 < or = d < 2.125° 2.125 ° < or = d < 4.25° 4.25 ° < or = d < 9 ° 9 ° < or = d < 31.625° 31.625 ° < or = d Sensor output difference (°) 5.15° 6.15° 8.28° 10.4° 12.4° Time Needed for Diagnosis: 212 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Signal difference between two sensors < or = Value from Map Time Needed for Diagnosis: 24 ms

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

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

Stop the continuity to the electronic throttle control motor. (Throttle opening is fixed to 6°.))

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

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

Scheme 218

ENABLE CONDITION

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Signal difference between two sensors > Value from Map Map MAP REFERENCE Throttle position sensor 1 opening angle (°) = d 0 < or = d < 0.6 ° 0.6° < or = d < 1.2° 1.2° < or = d < 2° 2° < or = d < 4° 4° < or = d Sensor output difference (°) 1.465° 1.597° 1.663° 2.455 ° 3.116° Time Needed for Diagnosis: 116 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Signal difference between two sensors < or = Value from Map Time Needed for Diagnosis: 116 ms

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

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

Throttle opening is fixed to 6°.

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

Detect the malfunction of barometric pressure sensor output property.

Judge as NG when the barometric pressure sensor output is largely different from the intake manifold pressure at engine start.

The barometric pressure sensor is built into the ECM.

ENABLE CONDITIONS

Perform the diagnosis once at ignition switch ON.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value |Barometric pressure - Intake manifold pressure| > or = 26.7 kPa (200 mmHg, 7.9 inHg) |Intake manifold pressure at engine start - Intake manifold pressure| < 1.3 kPa (9.99 mmHg, 0.4 inHg) Time Needed for Diagnosis: 328 ms Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value |Barometric pressure - Intake manifold pressure| < 26.7 kPa (200 mmHg, 7.9 inHg) Time Needed for Diagnosis: 262 ms

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

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

Barometric pressure sensor process: Fix the barometric pressure to 101 kPa (760 mmHg, 29.8 inHg).

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

Detect the open/short circuit of the barometric pressure sensor.

Judge as NG if out of specification.

The barometric pressure sensor is built into the ECM.

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage < 1.706646812 V Time Needed for Diagnosis: 500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage > or = 1.706646812 V Time Needed for Diagnosis: Less than 1 second

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

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

Barometric pressure sensor process: Fix the barometric pressure to 101 kPa (760 mmHg, 29.8 inHg).

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

Detect the open/short circuit of the barometric pressure sensor.

Judge as NG if out of specification.

The barometric pressure sensor is built into the ECM.

ENABLE CONDITIONS

Always perform the diagnosis continuously.

1. Abnormality Judgment If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage > or = 4.233789985 V Time Needed for Diagnosis: 500 ms Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
2. Normality Judgment Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time. Judgment Value JUDGMENT VALUE Malfunction Criteria Threshold Value Output voltage < 4.233789985 V Time Needed for Diagnosis: Less than 1 second

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

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

Barometric pressure sensor process: Fix the barometric pressure to 101 kPa (760 mmHg, 29.8 inHg).

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