Boost Pressure Sensor Check
Precautions: General safety (00)
NOTE:
Even if vehicle is under idling condition, forced regeneration without speed request is activated according to DPF® clogging.
In this state, engine speed at idling is increased.
For details of forced regeneration, refer to “Forced regeneration without Speed Request” under DPF® Regeneration Description:D16AA.
Circuit Diagram
| [A]: | ECM connector (View: [a]) | A3: | Boost pressure sensor ground circuit | 2. | Boost pressure sensor |
| A1: | Boost pressure sensor power supply circuit | B1: | IAT sensor-2 signal circuit | 3. | IAT sensor-2 |
| A2: | Boost pressure sensor signal circuit | 1. | ECM |
Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Air intake system check
1)Check that air intake system is working properly.
Is check result OK?
|
Go to Step 2.
|
Repair or replace defective part(s).
|
| 2 |
Parameter check
1)When ignition is “OFF”, connect SUZUKI scan tool to DLC.
2)Set ignition “ON”.
3)Check that engine stops and all electrical loads are turned off.
4)Check that “MAP” displayed on SUZUKI scan tool is approximately equal to “Barometric Pressure”.
Is check result OK?
|
Go to Step 3.
|
Go to Step 5.
|
| 3 |
Parameter check
1)With engine at idle speed and accelerator pedal not depressed, check that “MAP” is 75 to 105 kPa (0.8 to 1.1 kgf/cm2, 10.8 to 15.2 psi).
Is check result OK?
|
Go to Step 4.
|
Go to Step 5.
|
| 4 |
Boost pressure sensor power supply circuit and ground circuit check
1)When ignition is “OFF”, disconnect connector of boost pressure sensor with IAT sensor-2.
2)Check for proper terminal connection to connector of boost pressure sensor with IAT sensor-2.
3)If connections are OK, set ignition “ON”.
4)Check that voltage between “A1” and “A3” circuits is approx. 5 V.
Is check result OK?
|
Go to Step 7.
|
Go to Step 5.
|
| 5 |
Boost pressure sensor ground circuit check
1)Check that voltage between “A1” circuit and ground is approx. 5 V.
Is check result OK?
|
Repair “A3” circuit.
|
Go to Step 6.
|
| 6 |
Boost 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 “A1” circuit: less than 1 Ω
•Resistance between “A1” circuit and ground: infinity •Resistance between “A1” circuit terminal and other terminal at connector of boost pressure sensor with IAT sensor-2: infinity •Voltage of “A1” circuit: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 7.
|
Repair or replace defective wire harness.
|
| 7 |
Boost 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 “A2” circuit: less than 1 Ω
•Resistance between “A2” circuit and ground: infinity •Resistance between “A2” circuit terminal and other terminal at boost pressure sensor with IAT sensor-2 connector: infinity •Voltage of “A2” circuit: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 8.
|
Repair or replace defective wire harness.
|
| 8 |
Boost pressure sensor check
1)Check boost pressure sensor.
Is check result OK?
|
Replace ECM and recheck parameter.
|
Replace boost pressure sensor with IAT sensor-2.
|