PCM monitors output signals from injectors. If the PCM detects the #4 injector’s output signal stays low, the PCM sets a P0270 DTC.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Signal Low | 1. Poor connection 2. Open or short to ground in power harness 3. Open or short to ground in control harness 4. Injector 5. PCM |
Enable Conditions |
•
Engine running
•
Battery voltage between 11V and 16V
•
Above conditions are met longer than 0.5sec. | |
Threshold value |
•
Open or short to ground | |
Diagnosis Time |
•
Continuous (more than 5 sec. failure for every 10 sec.test) | |
MIL On Condition |
•
3 Driving Cycles |
