P1560

DTC P1560 BACK- UP VOLTAGE CIRCUIT MALFUNCTION

1. OUTLINE OF DIAGNOSIS
Detect the open/short circuit of back- up power supply circuit.
Judge as NG when the backup voltage becomes smaller than the battery voltage.




2. ENABLE CONDITION

3. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.

4. DIAGNOSTIC METHOD




Abnormality Judgment
Judge as NG when the continuous time of completing the malfunction criteria below becomes more than 2.5 seconds.




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

5. DTC CLEAR CONDITION
- When the OK idling cycle is completed 40 times in a row
- When "Clear Memory" is performed

6. MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
- When the OK driving cycle is completed 3 times in a row
- When "Clear Memory" is performed

7. FAIL SAFE
None

8. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)