DIAGNOSTIC METHOD
Judge as NG when the conditions for the outline of the diagnosis of the top are established.
Note. For the detection standard, refer to DTC B1570 ANTENNA
Note. For the detection standard, refer to DTC B1570 ANTENNA
Note. For the detection standard, refer to DTC B1570 ANTENNA
Note. For the detection standard, refer to DTC B1570 ANTENNA
Note. For the detection standard, refer to DTC B1570 ANTENNA
Note. For the detection standard, refer to DTC B1570 ANTENNA
Note. For the detection standard, refer to DTC B1570 ANTENNA
Detect the AVCS system malfunction.
Judge NG when the amount of AVCS actual timing advance does not approach to the amount of AVCS target timing advance.
Scheme 122
- When the conditions during which the differences of AVCS target timing advance amount and AVCS actual timing advance amount is large continues for certain amount of time.
- When the differences of target timing advance amount and actual timing advance amount is calculated during AVCS control, and the difference per predetermined time is the specified value or larger.
- Abnormality Judgment
Judge as NG when the following conditions are established within the predetermined time.
| Malfunction Criteria | Threshold Value |
|---|---|
| Sum(Target position - Actual position) | > 15000 °CA (Bank 1) |
| > 15000 °CA (Bank 2) | |
| Or | |
| Sum(Target position - Actual position) | < -4800 °CA (Bank 1) |
| < -4800 °CA (Bank 2) |
JUDGMENT VALUE
Time Needed for Diagnosis: 60000 ms
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 within the predetermined time.
| Malfunction Criteria | Threshold Value |
|---|---|
| Sum(Target position - Actual position) | < or = 15000 °CA (Bank 1) < or = 15000 °CA (Bank 2) and > or = -4800 °CA (Bank 1) > or = -4800 °CA (Bank 2) |
JUDGMENT VALUE
Time Needed for Diagnosis: 60000 ms
Detect the exhaust AVCS system malfunction.
Judge as NG when actual exhaust AVCS advance angle amount does not approach the target exhaust AVCS advance angle amount.
Scheme 123
- When the conditions during which the differences of exhaust AVCS target timing advance amount and exhaust AVCS actual timing advance amount is large continues for certain amount of time.
- When the differences of target timing advance amount and actual timing advance amount is calculated during exhaust AVCS control, and the difference per predetermined time is the specified value or larger.
- Abnormality Judgment
Judge as NG when the following conditions are established within the predetermined time.
| Malfunction Criteria | Threshold Value |
|---|---|
| Sum(Target position - Actual position) | > 8000 °CA (bank 1) |
| > 8000 °CA (bank 2) | |
| Or | |
| Sum(Target position - Actual position) | < -4800 °CA (Bank 1) |
| < -4800 °CA (Bank 2) |
JUDGMENT VALUE
Time Needed for Diagnosis
60000 ms
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 within the predetermined time.
| Malfunction Criteria | Threshold Value |
|---|---|
| Sum(Target position - Actual position) | < or = 8000 °CA (bank 1) < or = 8000 °CA (bank 2) and > or = -4800 °CA (Bank 1) > or = -4800 °CA (Bank 2) |
JUDGMENT VALUE
Time Needed for Diagnosis: 60000 ms
Detect the AVCS system malfunction.
Judge as NG when standard timing advance amount is far from learning angle.
Scheme 124
Judge as NG when the absolute value of the difference between cam signal input position and learning value is out of specification.
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Crankshaft position when camshaft position sensor signal is input - Learning value | > 12 °CA |
JUDGMENT VALUE
Time Needed for Diagnosis: 20000 ms
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
Note. Initial standard learning value is the value of crank angle initially input at the production plant. And then it will be updated every time normal judgment has been completed. Learning value will not be updated if NG judgment occurs because timing belt or chain derails suddenly in process or because wrong assembly occurs during servicing.
- 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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Crankshaft position when camshaft position sensor signal is input - Learning value | < or = 12 °CA |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect the exhaust AVCS system malfunction.
Judge as NG when standard timing advance amount is far from learning angle.
Scheme 125
Judge as NG when the absolute value of the difference between cam signal input position and learning value is out of specification.
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Crankshaft position when camshaft position sensor signal is input - Learning value | > 12 °CA |
JUDGMENT VALUE
Time Needed for Diagnosis: 20000 ms
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
Note. Initial standard learning value is the value of crank angle initially input at the production plant. And then it will be updated every time normal judgment has been completed. Learning value will not be updated if NG judgment occurs because timing belt or chain derails suddenly in process or because wrong assembly occurs during servicing.
- 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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Crankshaft position when camshaft position sensor signal is input - Learning value | < or = 12 °CA |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Note. For the detection standard, refer to DTC P0016 CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION (BANK1) .
Note. For the detection standard, refer to DTC P0017 CRANK AND CAM TIMING B SYSTEM FAILURE (BANK 1) .
Note. For the detection standard, refer to DTC P0011 INTAKE CAMSHAFT POSITION - TIMING OVER-ADVANCED OR SYSTEM PERFORMANCE (BANK 1) .
Note. For the detection standard, refer to DTC P0014 EXHAUST AVCS SYSTEM 1 (RANGE/PERFORMANCE) .
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 126
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Front oxygen (A/F) sensor impedance | > 50 ohms |
JUDGMENT VALUE
Time Needed for Diagnosis: 10000 ms
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- 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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Front oxygen (A/F) sensor impedance | < or = 50 ohms |
JUDGMENT VALUE
Time Needed for Diagnosis: 10000 ms
Detect front oxygen (A/F) sensor heater open or short circuit.
The front oxygen (A/F) sensor heater performs duty control, and the output terminal voltage at ON is 0 V, and the output terminal voltage at OFF is the battery voltage.
Judge as NG when the terminal voltage remains Low.
Scheme 127
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage level | Low |
| Front oxygen (A/F) sensor heater control duty | < 87.5 % |
JUDGMENT VALUE
Time Needed for Diagnosis: 4 ms x 250 time(s)
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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage level | High |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect front oxygen (A/F) sensor heater open or short circuit.
The front oxygen (A/F) sensor heater performs duty control, and the output terminal voltage at ON is 0 V, and the output terminal voltage at OFF is the battery voltage.
Judge as NG when the terminal voltage remains High.
Scheme 128
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage level | High |
| Front oxygen (A/F) sensor heater control duty | > or = 12.5 % |
JUDGMENT VALUE
Time Needed for Diagnosis: 4 ms x 250 time(s)
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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage level | Low |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect the rear oxygen sensor heater open or short circuit.
The rear oxygen sensor heater performs duty control, and the output terminal voltage at ON is 0 V, and the output terminal voltage at OFF is the battery voltage.
Judge as NG when the terminal voltage remains Low.
Scheme 129
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage level | Low |
| Rear oxygen sensor heater control duty | < 75 % |
JUDGMENT VALUE
Time Needed for Diagnosis: 8 ms x 1250 time(s)
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- 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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage level | High |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect the rear oxygen sensor heater open or short circuit.
The rear oxygen sensor heater performs duty control, and the output terminal voltage at ON is 0 V, and the output terminal voltage at OFF is the battery voltage.
Judge as NG when the terminal voltage remains High.
Scheme 130
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage level | High |
| Rear oxygen sensor heater control duty | > or = 15 % |
JUDGMENT VALUE
Time Needed for Diagnosis: 8 ms x 1250 time(s)
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- 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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage level | Low |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Note. For the detection standard, refer to DTC P0030 HO2S HEATER CONTROL CIRCUIT (BANK 1 SENSOR 1) .
Note. For the detection standard, refer to DTC P0031 HO2S HEATER CONTROL CIRCUIT LOW (BANK 1 SENSOR 1) .
Note. For the detection standard, refer to DTC P0032 HO2S HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 1) .
Note. For the detection standard, refer to DTC P0037 HO2S HEATER CONTROL CIRCUIT LOW (BANK 1 SENSOR 2) .
Note. For the detection standard, refer to DTC P0038 HO2S HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 2) .
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 131
- 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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Low | |
| Engine speed | < 2700 rpm |
| Throttle position | > or = 15 ° |
| Output voltage | < 1.8 V |
| Engine load | > 1 g/rev (0.04 oz/rev) |
| High | |
| Engine speed | 525 rpm - 850 rpm |
| Throttle position | < 4.3 ° |
| Output voltage | > or = 2.78 V |
| Engine load | < 0.6 g/rev (0.02 oz/rev) |
JUDGMENT VALUE
Time Needed for Diagnosis
Low side: 3000 ms
High side: 3000 ms
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- 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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Low | |
| Engine speed | < 2700 rpm |
| Throttle position | > or = 15 ° |
| Output voltage | > or = 1.8 V |
| Engine load | > 1 g/rev (0.04 oz/rev) |
| High | |
| Engine speed | 525 rpm - 850 rpm |
| Throttle position | < 4.3 ° |
| Output voltage | < 2.78 V |
| Engine load | < 0.6 g/rev (0.02 oz/rev) |
JUDGMENT VALUE
Time Needed for Diagnosis
Low side: Less than 1 second
High side: Less than 1 second
Detect the malfunction of air flow sensor output properties.
Judge as a low side NG when the air flow voltage indicates a small value regardless of running in a state where the air flow voltage increases. Judge as a high side NG when the air flow voltage indicates a large value regardless of running in a state where the air flow voltage decreases. Judge air flow sensor property NG when the Low side or High side becomes NG.
Scheme 132
- 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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Low | |
| Output voltage | < 1.67 V |
| Engine speed | > or = 2000 rpm |
| Throttle opening angle | > or = 15 ° |
| Intake manifold pressure | > or = 73.3 kPa (550 mmHg, 21.7 inHg) |
| High (1) | |
| Output voltage | > or = 1.83 V |
| Engine speed | 525 rpm - 850 rpm |
| Throttle opening angle | < 4.5 ° |
| Intake manifold pressure | > or = 46.7 kPa (350 mmHg, 13.8 inHg) |
| High (2) | |
| Output voltage | > or = 1.67 V |
| Engine speed | 525 rpm - 850 rpm |
| Throttle opening angle | < 4.5 ° |
| Intake manifold pressure | > or = 46.7 kPa (350 mmHg, 13.8 inHg) |
| Fuel system diagnosis | Rich side malfunction |
JUDGMENT VALUE
Time Needed for Diagnosis
Low: 5000 ms
High: 5000 ms
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- 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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Low | |
| Output voltage | > or = 1.67 V |
| Engine speed | > or = 2000 rpm |
| Throttle opening angle | > or = 15 ° |
| Intake manifold pressure | > or = 73.3 kPa (550 mmHg, 21.7 inHg) |
| High | |
| Output voltage | < 1.83 V |
| Engine speed | 525 rpm - 850 rpm |
| Throttle opening angle | < 4.5 ° |
| Intake manifold pressure | < 46.7 kPa (350 mmHg, 13.8 inHg) |
| Fuel system diagnosis | Rich side normal |
JUDGMENT VALUE
Time Needed for Diagnosis
Low: Less than 1 second
High: Less than 1 second
Detect open or short circuits of the air flow sensor.
Judge as NG if out of specification.
Scheme 133
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage | < or = 0.22 V |
JUDGMENT VALUE
Time Needed for Diagnosis: 500 ms
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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage | > 0.22 V |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect open or short circuits of the air flow sensor.
Judge as NG if out of specification.
Scheme 134
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage | > or = 4.69 V |
JUDGMENT VALUE
Time Needed for Diagnosis: 500 ms
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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage | < 4.69 V |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect the open or short circuit of intake manifold pressure sensor.
Judge as NG if out of specification.
Scheme 135
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage | < or = 0.606 V |
JUDGMENT VALUE
Time Needed for Diagnosis: 2000 ms
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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage | > 0.606 V |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect the open or short circuit of intake manifold pressure sensor.
Judge as NG if out of specification.
Scheme 136
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage | > or = 3.906 V |
JUDGMENT VALUE
Time Needed for Diagnosis: 2000 ms
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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage | < 3.906 V |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect the malfunction of intake air temperature sensor output property.
Judge as NG when the intake air temperature is not varied whereas it seemed to be varied from the viewpoint of engine condition.
Scheme 137
- Abnormality Judgment
Judge as NG when the following conditions are established.
| 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) |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage difference between Max. and Min. | > or = 0.02 V |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect open or short circuit of the intake air temperature sensor.
Judge as NG if out of specification.
Scheme 138
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage | < 0.395 V |
JUDGMENT VALUE
Time Needed for Diagnosis: 500 ms
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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage | > or = 0.395 V |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect open or short circuit of the intake air temperature sensor.
Judge as NG if out of specification.
Scheme 139
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage | > or = 4.712 V |
JUDGMENT VALUE
Time Needed for Diagnosis: 500 ms
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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage | < 4.712 V |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect the malfunction of the engine coolant temperature sensor characteristics.
When the ignition is ON after the specified period of soaking time has elapsed, compare the engine coolant temperature with intake air temperature. Judge as NG if the difference between two temperatures is larger than the predetermined value and the engine coolant temperature becomes the specified value or more.
Scheme 140
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| All of the following conditions are established. | |
| Engine coolant temperature - intake air temperature | > 15°C (27°F) |
| Engine coolant temperature | > 45 °C (113 °F) |
JUDGMENT VALUE
Time Needed for Diagnosis: 512 ms
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- 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.
| Malfunction Criteria | Threshold Value |
|---|---|
| When any one of the followings is established. | |
| Engine coolant temperature - intake air temperature | < or = 15°C (27°F) |
| Engine coolant temperature | < or = 45 °C (113 °F) |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect the open or short circuit of the engine coolant temperature sensor.
Judge as NG if out of specification.
Scheme 141
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage | < 0.464 V |
JUDGMENT VALUE
Time Needed for Diagnosis: 500 ms
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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage | > or = 0.464 V |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect the open or short circuit of the engine coolant temperature sensor.
Judge as NG if out of specification.
Scheme 142
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage | > or = 4.702 V |
JUDGMENT VALUE
Time Needed for Diagnosis: 500 ms
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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage | < 4.702 V |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect the open or short circuit of throttle position sensor 1.
Judge as NG if out of specification.
Scheme 143
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction criteria | Threshold value |
|---|---|
| Sensor 1 input voltage | < or = 0.27 V |
JUDGMENT VALUE
Time Needed for Diagnosis: 24 ms
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.
| Malfunction criteria | Threshold value |
|---|---|
| Sensor 1 input voltage | > 0.27 V |
JUDGMENT VALUE
Time Needed for Diagnosis: 24 ms
Detect the open or short circuit of throttle position sensor 1.
Judge as NG if out of specification.
Scheme 144
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction criteria | Threshold value |
|---|---|
| Sensor 1 input voltage | > or = 4.858 V |
JUDGMENT VALUE
Time Needed for Diagnosis: 24 ms
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.
| Malfunction criteria | Threshold value |
|---|---|
| Sensor 1 input voltage | < 4.858 V |
JUDGMENT VALUE
Time Needed for Diagnosis: 24 ms
Detect the malfunction of engine coolant temperature output property.
Judge as NG when the engine coolant temperature does not rise in driving conditions where it should.
Scheme 145
- Abnormality Judgment
Judge as NG if the criteria below are met.
| 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 |
JUDGMENT VALUE
Timer for diagnosis after engine start
- Timer stop at fuel cut
- During the driving conditions except a) above, timer counts up as follows.
64 ms + TWCNT ms (when at 64 ms)
TWCNT is defined as follows
TWCNT = 0 at idle switch ON
TWCNT show on the following table at idle switch OFF.
| 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 | 37.136 ms | 74.272 ms | 111.41 ms | 126.66 ms | 141.91 ms | 163.59 ms | 185.26 ms |
| 10 (14) | 0 ms | 27.391 ms | 54.782 ms | 82.173 ms | 99.65 ms | 117.13 ms | 135.96 ms | 154.8 ms | |
| 0 (32) | 0 ms | 17.646 ms | 35.292 ms | 52.938 ms | 72.64 ms | 92.341 ms | 108.34 ms | 124.33 ms | |
| 10 (50) | 0 ms | 35 ms | 40 ms | 50 ms | 65 ms | 65 ms | 65 ms | 65 ms | |
| 20 (68) | 0 ms | 35 ms | 40 ms | 50 ms | 65 ms | 65 ms | 65 ms | 65 ms | |
Judgment value of timer after engine starting
t = 429523 ms - 28605 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.
- Normality Judgment
Judge as OK and clear the NG when the malfunction criteria below are met.
| Malfunction Criteria | Threshold Value |
|---|---|
| Engine coolant temperature | > or = 20 °C (68 °F) |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect malfunctions of the thermostat function.
Judge as NG when any one of the following conditions is established.
- When the actual engine coolant temperature does not reach the maximum temperature necessary to perform other OBDII diagnosis and Sum (Estimated engine coolant temperature - actual engine coolant temperature) exceeded the predetermined value. (Judgment 1)
- When the actual engine coolant temperature does not reach the range within -11°C (-19.8°F) from the regulated temperature and Sum (Estimated engine coolant temperature - actual engine coolant temperature) exceeded the predetermined value. (Judgment 2)
- When the difference between the estimated coolant temperature and the actual engine coolant temperature exceeds the predetermined value, and Sum (Estimated engine coolant temperature - actual engine coolant temperature) exceeded the predetermined value. (Judgment 3)
Scheme 146
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| When any one of the followings is established. | |
| < Judgment 1 > | |
| Actual engine coolant temperature | < Value of Map 4 |
| And | |
| Sum (Estimated engine coolant temperature - actual engine coolant temperature) | > Value of Map 5 |
| < Judgment 2 > | |
| Actual engine coolant temperature | < Regulated temperature - Value of Map 6 |
| And | |
| Sum (Estimated engine coolant temperature - actual engine coolant temperature) | > Value of Map 7 |
| < Judgment 3 > | |
| Estimated engine coolant temperature - actual engine coolant temperature | > Value of Map 8 |
| And | |
| Sum (Estimated engine coolant temperature - actual engine coolant temperature) | > Value of Map 9 |
JUDGMENT VALUE
| Estimate ambient temperature °C (°F) | 7 (19.4) | 8 (46.4) | 10 (50) | 25 (77) |
|---|---|---|---|---|
| Threshold Value °C (°F) | 75 (167) | 75 (167) | 75 (167) | 75 (167) |
MAP 4
| Engine coolant temperature at engine starting °C (°F) | 7 (19.4) | 0 (32) | 8 (46.4) | 10 (50) | 25 (77) | 30 (86) | 35 (95) |
|---|---|---|---|---|---|---|---|
| Threshold Value °C (°F) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1200 (2160) |
MAP 5
| Estimate ambient temperature °C (°F) | 7 (19.4) | 8 (46.4) | 10 (50) | 25 (77) |
|---|---|---|---|---|
| Threshold Value °C (°F) | 11.1 (20) | 11.1 (20) | 11.1 (20) | 11.1 (20) |
MAP 6
| Engine coolant temperature at engine starting °C (°F) | 7 (19.4) | 0 (32) | 8 (46.4) | 10 (50) | 25 (77) | 35 (95) | 45 (113) |
|---|---|---|---|---|---|---|---|
| Threshold Value °C (°F) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1200 (2160) |
MAP 7
| Estimate ambient temperature °C (°F) | 7 (19.4) | 8 (46.4) | 10 (50) | 25 (77) |
|---|---|---|---|---|
| Threshold Value °C (°F) | 11.1 (20) | 11.1 (20) | 11.1 (20) | 11.1 (20) |
MAP 8
| Engine coolant temperature at engine starting °C (°F) | 7 (19.4) | 8 (46.4) | 10 (50) | 25 (77) |
|---|---|---|---|---|
| Threshold Value °C (°F) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) |
MAP 9
Time Needed for Diagnosis: 300 - 700 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 continuous time while the following conditions are established is more than the predetermined time.
| Malfunction Criteria | Threshold Value |
|---|---|
| All of the following conditions are established. | |
| < Judgment 1 > | |
| Actual engine coolant temperature | > or = Value of Map 4 |
| And | |
| Sum (Estimated engine coolant temperature - actual engine coolant temperature) | < or = Value of Map 5 |
| < Judgment 2 > | |
| Actual engine coolant temperature | > or = Regulated temperature - Value of Map 6 |
| And | |
| Sum (Estimated engine coolant temperature - actual engine coolant temperature) | < or = Value of Map 7 |
| < Judgment 3 > | |
| Estimated engine coolant temperature - actual engine coolant temperature | < or = Value of Map 8 |
| And | |
| Sum (Estimated engine coolant temperature - actual engine coolant temperature) | < or = Value of Map 9 |
| And | |
| Actual engine coolant temperature | > or = Regulated temperature - Value of Map 10 |
JUDGMENT VALUE
| Estimate ambient temperature °C (°F) | 7 (19.4) | 8 (46.4) | 10 (50) | 25 (77) |
|---|---|---|---|---|
| Threshold Value °C (°F) | 11.1 (20) | 11.1 (20) | 11.1 (20) | 11.1 (20) |
MAP 10
Time Needed for Diagnosis: 300 - 700 seconds
Detect the open or short circuit of sensor.
Judge as NG, when the element voltage is out of the specified range.
Scheme 147
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Input voltage (+) | < 1.128 V |
| Or | |
| Input voltage (-) | < 0.23 V |
| Or | |
| Input voltage (+) - Input voltage (-) | < 0.644 V |
JUDGMENT VALUE
Time Needed for Diagnosis
Input voltage (+): 1000 ms
Input voltage (-): 1000 ms
Input voltage (+) - Input voltage (-)|: 1000 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
- 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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Input voltage (+) | > or = 1.128 V |
| Input voltage (-) | > or = 0.23 V |
| Input voltage (+) - Input voltage (-) | > or = 0.644 V |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect the open or short circuit of sensor.
Judge as NG, when the element voltage is out of the specified range.
Scheme 148
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Input voltage (+) | > 3.589 V |
| Or | |
| Input voltage (-) | > 3.541 V |
JUDGMENT VALUE
Time Needed for Diagnosis
Input voltage (+): 1000 ms
Input voltage (-): 1000 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
- 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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Input voltage (+) | < or = 3.589 V |
| Input voltage (-) | < or = 3.541 V |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect open circuits of the sensor.
Judge as NG when the impedance of the element is large.
Scheme 149
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Battery voltage | > or = 10.9 V |
| Time of heater control duty at 70 % or more | > or = 30000 ms |
| Front oxygen (A/F) sensor impedance. | > 500 ohms |
JUDGMENT VALUE
Time Needed for Diagnosis: 5000 ms
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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Battery voltage | > or = 10.9 V |
| Front oxygen (A/F) sensor impedance. | < or = 500 ohms |
JUDGMENT VALUE
Time Needed for Diagnosis: Less than 1 second
Detect continuity NG of the oxygen sensor. If the oxygen sensor voltage reading is not within the probable range considering the operating conditions, judge as NG.
Scheme 150
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| High | P0138 | |
| Sensor output voltage | > 1.2 V | P0158 |
| Low | P0137 | |
| Sensor output voltage | < 0.03 V | P0157 |
JUDGMENT VALUE
Time Needed for Diagnosis
High: 2500 ms
Low (1): 20000 ms
Low (2): 40000 ms
Low (3): Value from Map
| Fuel cut time (s) | 0 | 2000 | 10000 |
|---|---|---|---|
| Time Needed for Diagnosis (s) | 40000 | 40000 | 60000 |
MAP
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- 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.
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| High | P0138 | |
| Sensor output voltage | < or = 1.2 V | P0158 |
| Low | P0137 | |
| Sensor output voltage | > or = 0.03 V | P0157 |
JUDGMENT VALUE
Time Needed for Diagnosis
High: Less than 1 second
Low (1): Less than 1 second
Low (2): Less than 1 second
Low (3): Less than 1 second
Note. For the detection standard, refer to DTC P0137 O2 SENSOR CIRCUIT LOW VOLTAGE (BANK 1 SENSOR 2) .
Detect the slow response of rich --> lean for rear oxygen sensor output.
When the deceleration fuel cut has occurred, detect the trouble by calculating the time when the rear oxygen sensor output passes through the predetermined range of voltages.
Judge as NG when the response time is larger than the threshold value.
Scheme 151
Detect the trouble by calculating the response time of the rear oxygen sensor during fuel cut.
Scheme 152
- Abnormality Judgment
Judge as NG when the following conditions are established.
| Malfunction Criteria | Threshold Value |
|---|---|
| Time when rear oxygen sensor voltage changed from 0.5 V to 0.2 V. | > 491 ms |
JUDGMENT VALUE
Time Needed for Diagnosis: 10 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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Time when rear oxygen sensor voltage changed from 0.5 V to 0.2 V. | < or = 491 ms |
JUDGMENT VALUE
Time Needed for Diagnosis: 10 seconds
Detect the slow response of lean --> rich for rear oxygen sensor output.
After the deceleration fuel cut has occurred, detect the trouble by calculating the time when the rear oxygen sensor output passes through the predetermined range of voltages.
Judge as NG when the response time is larger than the threshold value.
Scheme 153
Detect the trouble by calculating the response time of the rear oxygen sensor after fuel cut.
Scheme 154
- Abnormality Judgment
Judge as NG when the following conditions are established.
| Malfunction Criteria | Threshold Value |
|---|---|
| Time when rear oxygen sensor voltage changed from 0.3 V to 0.5 V. | > 4000 ms |
JUDGMENT VALUE
Time Needed for Diagnosis: 10 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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Time when rear oxygen sensor voltage changed from 0.3 V to 0.5 V. | < or = 4000 ms |
JUDGMENT VALUE
Time Needed for Diagnosis: 10 seconds
Note. For the detection standard, refer to DTC P013A O2 SENSOR SLOW RESPONSE - RICH TO LEAN (BANK 1 SENSOR 2) .
Note. For the detection standard, refer to DTC P013B O2 SENSOR SLOW RESPONSE - LEAN TO RICH (BANK 1 SENSOR 2) .
Detect the delayed response of rear oxygen sensor output for rich --> lean.
After the deceleration fuel cut has started, detect the trouble by calculating the time when the rear oxygen sensor output decreases to the predetermined voltages.
Judge as NG when the response time is larger than the threshold value.
Scheme 155
Detect the trouble by calculating the time from the beginning of the fuel cut to the beginning of the rear oxygen sensor voltage starting to drop.
Scheme 156
- Abnormality Judgment
Judge as NG when the following conditions are established.
| Malfunction Criteria | Threshold Value |
|---|---|
| Time when rear oxygen sensor voltage changed to 0.5 V after the fuel cut started. | > 4000 ms |
JUDGMENT VALUE
Time Needed for Diagnosis: 10 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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Time when rear oxygen sensor voltage changed to 0.5 V after the fuel cut started. | < or = 4000 ms |
JUDGMENT VALUE
Time Needed for Diagnosis: 10 seconds
Detect the delayed response of rear oxygen sensor output for lean --> rich.
After the deceleration fuel cut has completed, detect the trouble by calculating the time when the rear oxygen sensor output increases to the predetermined voltages.
Judge as NG when the response time is larger than the threshold value.
Scheme 157
Detect the trouble by calculating the time from the completion of the fuel cut to the beginning of the rear oxygen sensor voltage starting to rise.
Scheme 158
- Abnormality Judgment
Judge as NG when the following conditions are established.
| Malfunction Criteria | Threshold Value |
|---|---|
| The number of times that the rear oxygen sensor voltage changed to 0.3 V after the fuel cut has completed (time counter) | > 3750 time(s) |
JUDGMENT VALUE
Time Needed for Diagnosis: 10 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.
| Malfunction Criteria | Threshold Value |
|---|---|
| The number of times that the rear oxygen sensor voltage changed to 0.3 V after the fuel cut has completed (time counter) | < or = 3750 time(s) |
JUDGMENT VALUE
Time Needed for Diagnosis: 10 seconds
Detect the rear oxygen sensor open or short circuit. Judge as NG when the rear oxygen sensor voltage can be determined to be abnormal considering conditions such as intake air amount, engine coolant temperature, main feedback control and deceleration fuel cut.
Scheme 159
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Minimum output voltage | > 0.15 V |
| Or | |
| Maximum output voltage | < 0.55 V |
JUDGMENT VALUE
Time Needed for Diagnosis: 200000 ms
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.
| 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 |
JUDGMENT VALUE
Detect the malfunction of rear oxygen sensor heater.
While observing the engine condition, judge as NG if the rear oxygen sensor impedance is great.
Scheme 160
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output terminal for heater characteristics failure detection | Low |
JUDGMENT VALUE
Time Needed for Diagnosis: 4 ms x 2500 time(s)
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- 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.
| Malfunction Criteria | Threshold Value |
|---|---|
| Output terminal for heater characteristics failure detection | High |
JUDGMENT VALUE
Time Needed for Diagnosis: 4 ms x 2500 time(s)
Note. For the detection standard, refer to DTC P013E O2 SENSOR DELAYED RESPONSE - RICH TO LEAN (BANK 1 SENSOR 2) .
Note. For the detection standard, refer to DTC P013F O2 SENSOR DELAYED RESPONSE - LEAN TO RICH (BANK 1 SENSOR 2) .
Detect the slow response of front oxygen (A/F) sensor.
For diagnosis, detect the trouble by processing the lambda waveform in normal driving without forcibly changing the target air fuel ratio.
