1.CHECK DTC PRIORITY
If DTC P0191 is displayed with DTC P06B0, first perform the trouble diagnosis for DTC P06B0.Is applicable DTC detected?
.
2.CHECK FUEL RAIL PRESSURE (FRP) SENSOR POWER SUPPLY-1
3.CHECK FRP SENSOR POWER SUPPLY-2
4.CHECK FRP SENSOR POWER SUPPLY CIRCUIT
5.CHECK FRP SENSOR GROUND CIRCUIT
6.CHECK ECM GROUND CIRCUIT
Check the continuity between ECM harness connector and the ground.ECM | Ground | Continuity |
Connector | Terminal |
F51 | 4 | Ground | Existed |
E16 | 156 |
157 |
160 |
Is inspection result normal?
INSPECTION END Repair or replace malfunctioning part.
7.CHECK FRP SENSOR SIGNSL CIRCUIT