Fuel Pressure Sensor Circuit Check
Precautions: General safety (00)
Circuit Diagram
| [A]: | ECM connector (View: [a]) | B1: | Fuel pressure sensor power supply circuit | 1. | ECM |
| A1: | Fuel flow actuator power supply circuit | B2: | Fuel pressure sensor signal circuit | 2. | Fuel flow actuator |
| A2: | Fuel flow actuator drive circuit | B3: | Fuel pressure sensor ground circuit | 3. | Fuel pressure sensor |
Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Parameter check
1)When ignition is “OFF”, connect SUZUKI scan tool to DLC.
2)Start engine and warm it up to normal operating temperature.
3)With engine at idle speed and accelerator pedal not depressed, check that “Fuel Rail Pressure” displayed on SUZUKI scan tool is 20,000 to 35,000 kPa.
Is check result OK?
|
End.
|
Go to Step 2.
|
| 2 |
Fuel pressure sensor power supply circuit and ground circuit check
1)When ignition is “OFF”, disconnect fuel presser sensor connector.
2)Check for proper terminal connection to fuel presser sensor connector.
3)If connections are OK, set ignition “ON”.
4)Check that voltage between “B1” and “B3” circuits is approx. 5 V.
Is check result OK?
|
Go to Step 5.
|
Go to Step 3.
|
| 3 |
Fuel pressure sensor ground circuit check
1)Check that voltage between “B1” circuit and ground is approx. 5 V.
Is check result OK?
|
Repair “B3” circuit.
|
Go to Step 4.
|
| 4 |
Fuel pressure sensor power supply circuit check
1)When ignition is “OFF”, disconnect “D01” connector from ECM.
2)Check for proper terminal connection to “D01” connector.
3)If connections are OK, check the following points.
•Resistance of “B1” circuit: less than 1 Ω
•Resistance between “B1” circuit and ground: infinity •Resistance between “B1” circuit terminal and other terminal at fuel pressure sensor connector: infinity •Voltage of “B1” circuit: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Replace ECM and recheck parameter.
|
Repair “B1” circuit.
|
| 5 |
Fuel pressure sensor signal circuit check
1)When ignition is “OFF”, disconnect “D01” connector from ECM.
2)Check for proper terminal connection to “D01” connector.
3)If connections are OK, check the following points.
•Resistance of “B2” circuit: less than 1 Ω
•Resistance between “B2” circuit and ground: infinity •Resistance between “B2” circuit terminal and other terminal at fuel pressure sensor connector: infinity •Voltage of “B2” circuit: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Replace fuel pressure sensor and recheck parameter.
|
Repair “B2” circuit.
|