Diagnostic Method
Judge as NG if the criteria below are met.
Judgment value
Judgment1:
| Malfunction Criteria | Threshold Value |
|---|---|
| (1) Throttle minimum stop position | ≥ 2.2 V |
Judgment2:
| Malfunction Criteria | Threshold Value |
|---|---|
| (2) The learned value of accelerator pedal position in back-up RAM area 1 | The learned value of accelerator pedal position in backup RAM area 2 |
Judgment3:
| Malfunction Criteria | Threshold Value |
|---|---|
| (3) The sum of back-up RAM at the ECM shut down | The sum of back-up RAM at the ECM powered-on |
Judgment4:
| Malfunction Criteria | Threshold Value |
|---|---|
| (4) Communication between main CPU and sub CPU | Lost |
Judgment5:
| Malfunction | Criteria Threshold Value |
|---|---|
| (5) The calculated data of throttle control by main CPU | The calculated data of throttle control by sub CPU |
Judgment6:
| Malfunction Criteria | Threshold Value |
|---|---|
| (6) The calculated data by main CPU | The calculated data by FPU |
Time needed for diagnosis:
Judgment1, 2, 3, 4, 5: Less than 1 s
Judgment6: 200 ms
Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.