DIAGNOSTIC METHOD 2
Detect the malfunction by the cumulative value obtained from the amount of variation in lambda change.
Scheme 39
- Abnormality Judgment
Judge as NG when the following conditions are established.
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| Cumulative value obtained from the amount of variation in lambda change Sum (lambda(n) - lambda(n-1)) - (lambda(n-1) - lambda(n-2)) | < Value from Map | P014C and P014D |
JUDGMENT VALUE
| Cumulative value obtained from the amount of variation in lambda Sum lambda(n) - lambda(n-1) | 0.00 | 5.00 |
|---|---|---|
| Cumulative value obtained from the amount of variation in lambda change | 0.00 | 3.00 |
MAP SPECIFICATION (CVT MODEL EXCEPT FOR PZEV)
| Cumulative value obtained from the amount of variation in lambda Sum lambda(n) - lambda(n-1) | 0.00 | 3.00 |
|---|---|---|
| Cumulative value obtained from the amount of variation in lambda change | 0.00 | 9.00 |
MAP SPECIFICATION (MT MODEL EXCEPT FOR PZEV)
| Cumulative value obtained from the amount of variation in lambda Sum lambda(n) - lambda(n-1) | 0.00 | 3.50 |
|---|---|---|
| Cumulative value obtained from the amount of variation in lambda change | 0.00 | 3.50 |
MAP SPECIFICATION (PZEV CVT MODEL)
| Cumulative value obtained from the amount of variation in lambda Sum lambda(n) - lambda(n-1) | 0.00 | 2.00 | 4.00 |
|---|---|---|---|
| Cumulative value obtained from the amount of variation in lambda change | 0.00 | 7.00 | 9.00 |
MAP SPECIFICATION (PZEV MT MODEL)
Time Needed for Diagnosis: 90 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 | DTC |
|---|---|---|
| Cumulative value obtained from the amount of variation in lambda change Sum (lambda(n) - lambda(n-1)) - (lambda(n-1) - lambda(n-2)) | > or = Value from Map | P014C and P014D |
JUDGMENT VALUE
Time Needed for Diagnosis: 90 seconds
Note. For the detection standard, refer to DTC P014C. < Ref. to DTC P014C O2 SENSOR SLOW RESPONSE - RICH TO LEAN (BANK 1 SENSOR 1) , Diagnostic Trouble Code (DTC) Detecting Criteria. >
Detect the slow response of front oxygen (A/F) sensor.
For diagnosis, detect the trouble by processing the lambda waveform in normal driving without forcibly changing the target air fuel ratio.
Scheme 40
Detect the malfunction depending on the average value of time necessary for lambda to inverse the air fuel ratio from "Lean --> Rich --> Lean" to "Rich --> Lean --> Rich".
Scheme 41
- Abnormality Judgment
Judge as NG when the following conditions are established.
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| Average value of time necessary for lambda to inverse the air fuel ratio to Lean --> Rich --> Lean | > 150 ms (CVT model except for PZEV) > 130 ms (MT model except for PZEV) > 150 ms (PZEV CVT model) > 170 ms (PZEV MT model) | P015A |
| Average value of time necessary for lambda to inverse the air fuel ratio to Rich --> Lean --> Rich | > 350 ms (CVT model except for PZEV) > 170 ms (MT model except for PZEV) > 200 ms (PZEV CVT model) > 150 ms (PZEV MT model) | P015B |
JUDGMENT VALUE
Time Needed for Diagnosis: 50 times of inversion
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 | DTC |
|---|---|---|
| Average value of time necessary for lambda to inverse the air fuel ratio to Lean --> Rich --> Lean | < or = 150 ms (CVT model except for PZEV) < or = 130 ms (MT model except for PZEV) < or = 150 ms (PZEV CVT model) < or = 170 ms (PZEV MT model) | P015A |
| Average value of time necessary for lambda to inverse the air fuel ratio to Rich --> Lean --> Rich | < or = 350 ms (CVT model except for PZEV) < or = 170 ms (MT model except for PZEV) < or = 200 ms (PZEV CVT model) < or = 150 ms (PZEV MT model) | P015B |
JUDGMENT VALUE
Time Needed for Diagnosis: 50 times of inversion
Detect the malfunction by calculating the average amplitude of lambda.
Scheme 42
- Abnormality Judgment
Judge as NG when the following conditions are established.
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| Average value for lambda amplitude | > 0.07 (CVT model) > 0.1 (MT model) | P015A and P015B |
JUDGMENT VALUE
Time Needed for Diagnosis: 11250 time(s) x 8 ms
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- Normality Judgment
Judge as OK and clear the NG if the following conditions are established.
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| Average value for lambda amplitude | < or = 0.07 (CVT model) < or = 0.1 (MT model) | P015A and P015B |
JUDGMENT VALUE
Time Needed for Diagnosis: 11250 time(s) x 8 ms