DTC P0192 / P0193
Precautions: General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
P0192: Fuel Rail Pressure Sensor “A” Circuit Low Bank 1 Output voltage of fuel pressure sensor signal circuit is lower than 0.02 V for 5 sec. (1 D/C detection logic) |
•Fuel pressure sensor and/or its circuit
•Fuel delivery pipe (incorporating fuel pressure sensor) •ECM |
|
P0193: Fuel Rail Pressure Sensor “A” Circuit High Bank 1 Output voltage of fuel pressure sensor signal circuit is higher than 4.98 V for 5 sec. (1 D/C detection logic) |
Circuit Diagram
| [A]: | ECM connector (View: [a]) | B2: | Fuel pressure sensor signal circuit | 3. | Fuel pressure sensor |
| A1: | High pressure fuel pump power supply circuit | B3: | Fuel pressure sensor ground circuit | 4. | To MAP sensor |
| A2: | High pressure fuel pump drive circuit | 1. | ECM | ||
| B1: | Fuel pressure sensor power supply circuit | 2. | High pressure fuel pump |
DTC Confirmation Procedure
1)Set ignition “ON”.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
| 2 |
Fuel pressure sensor power supply circuit check
1)With ignition “OFF”, disconnect fuel pressure sensor connector.
2)Check for proper terminal connection to fuel pressure sensor connector.
3)If connection is OK, set ignition “ON”.
4)Check that voltage between “B1” and “B3” is approx. 5 V.
Is check result OK?
|
Go to Step 4.
|
Go to Step 3.
|
| 3 |
Fuel pressure sensor ground circuit check
1)Check that voltage between “B1” and ground is approx. 5 V.
Is check result OK?
|
Repair “B3” circuit. If this DTC is detected again, replace ECM and recheck DTC.
|
Check “B1” circuit.
If detective circuit is found, repair “B1” circuit.
If this DTC is detected again, replace ECM and recheck DTC.
|
| 4 |
Fuel pressure sensor signal circuit check
1)With ignition “OFF”, disconnect “C01” and “E01” connectors of ECM.
2)Check for proper terminal connection to “C01” and “E01” connectors.
3)If connections are OK, check the following points.
•Resistance of “B2” circuits: less than 1 Ω
•Resistance between “B2” circuit and ground: infinity •Resistance between “B2” circuit terminal at fuel pressure sensor connector: infinity •Voltage of “B2” circuits: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 5.
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Repair or replace defective wire harness.
|
| 5 |
Fuel pressure sensor check
1)Check fuel pressure sensor.
Is check result OK?
|
Replace ECM and recheck DTC.
|
Replace fuel delivery pipe (incorporating fuel pressure sensor).
|