If the open, short or over-temperature on fuel pump circuit is detected, ECM sets DTC P023000.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy |
•
Circuit monitoring | 1. Poor connector connection 2. Short to power/ground in fuel pump circuit 3. Open in fuel pump circuit 4. Faulty ECM | ||
Enable Condition |
•
Engine running | |||
Threshold Value | Case 1 |
•
Open load of pre-supply pump output is detected | ||
Case 2 |
•
Over-temperature is detected | |||
Case 3 |
•
Short to power in fuel pump circuit | |||
Case 4 |
•
Short to ground in fuel pump circuit | |||
Detecting Time | Case 1 |
•
270 msec. | ||
Case 2 |
•
1 sec. | |||
Case 3 |
•
270 msec. | |||
Case 4 |
•
2 sec. | |||
Fail Safe | MIL |
•
Off | ||
Torque Limit |
•
Yes (Case 1, Case 3) | |||
