P2504

DTC P2504 CHARGING SYSTEM VOLTAGE HIGH

1. OUTLINE OF DIAGNOSIS
Detect the open or the short circuit of generator control terminal.
Judge NG when the output level of ECM is different from actual terminal level.

2. COMPONENT DESCRIPTION
- Driving cycle: 50 ms cycles (frequency: 20 Hz)
- Driving method: ON/OFF duty ratio control




3. ENABLE CONDITION

4. GENERAL DRIVING CYCLE
Perform the continuous diagnosis after 5 seconds from engine starting.

5. DIAGNOSTIC METHOD




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




- Normality Judgment
Judge OK and clear NG when the malfunction criteria is completed.

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

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

8. FAIL SAFE
None

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