Diagnostic Method
- Abnormality Judgment
Judge NG when the malfunction criteria below are completed.
Judgment Value
JUDGMENT VALUE REFERENCE (ABNORMALITY)
| Malfunction Criteria | Threshold Value |
|---|---|
| Main CPU normal RAM abnormality | |
| Write 5AA5A55A, and read out. (All area of RAM) | Cannot be read out 5AA5A55A. |
| Or write A55A5AA5, and read out. (All area of RAM) | Cannot be read out A55A5AA5. |
| Sub CPU normal RAM abnormality. | |
| Write 5AA5, and read out. (All area of RAM) | Cannot be read out 5AA5. |
| Or write A55A, and read out. (All area of RAM) | Cannot be read out A55A. |
Time Needed for Diagnosis: To be determined.
Malfunction Indicator Light Illumination: Illuminates as soon as malfunction occurs.
- Normality Judgment
Judge NG when the malfunction criteria below are completed.
Judgment Value
JUDGMENT VALUE REFERENCE (NORMALITY)
| Malfunction Criteria | Threshold Value |
|---|---|
| Main CPU normal RAM abnormality | |
| Write 5AA5A55A, and read out. (All area of RAM) | Cannot be read out 5AA5A55A. |
| Or write A55A5AA5, and read out. (All area of RAM) | Cannot be read out A55A5AA5. |
| Sub CPU normal RAM abnormality. | |
| Write 5AA5, and read out. (All area of RAM) | Cannot be read out 5AA5. |
| Or write A55A, and read out. (All area of RAM) | Cannot be read out A55A. |