DTC P0628-00; Fuel Pump Control Module Circuit Low Input: Notes
DETECTION CONDITION & POSSIBLE CAUSE
| DTC P0628:00 |
Fuel pump control module circuit low input |
| DETECTION CONDITION |
- When the PCM outputs a duty signal to the fuel pump control module, the difference in voltage between fuel pump unit terminals A and B is less than 1.5 V for a continuous 5 s.
Diagnostic support note
- This is a continuous monitor (CCM).
- The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.
- FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
- DTC is stored in the PCM memory.
|
| FAIL-SAFE FUNCTION |
Not applicable |
| POSSIBLE CAUSE |
- Fuel pump unit connector or terminals malfunction
- Fuel pump unit malfunction
- Fuel pump control module connector or terminals malfunction
- Short to ground in wiring harness between fuel pump unit terminal A and fuel pump control module terminal 2C
- Open circuit in wiring harness between the following terminals:
- Fuel pump unit terminal A-Fuel pump control module terminal 2C
- Fuel pump unit terminal B-Fuel pump control module terminal 2D
- Fuel pump control module malfunction
- PCM malfunction
|
|
|