EGR-2 Valve Operation Check
Precautions: General safety (00)
Circuit Diagram
| [A]: | ECM connector (View: [a]) | B1: | EGR-2 valve position sensor power supply circuit | 1. | ECM |
| A1: | EGR-2 valve (+) drive circuit | B2: | EGR-2 valve position sensor signal circuit | 2. | EGR-2 valve motor |
| A2: | EGR-2 valve (–) drive circuit | B3: | EGR-2 valve position sensor ground circuit | 3. | EGR-2 valve position sensor |
Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Output test
1)When ignition is “OFF”, connect SUZUKI scan tool to DLC.
2)Check condition of main and circuit fuses. If not, replace fuse and check for short circuit to ground.
3)Set ignition “ON”.
4)Select “EGR-2 Valve” function in “Active Test” mode on SUZUKI scan tool.
5)Check EGR-2 valve operation sound.
Is check result OK?
|
End.
|
Go to Step 2.
|
| 2 |
EGR-2 valve (+) drive circuit and (–) drive circuit check
1)When ignition is “OFF”, disconnect “D01” connector from ECM and EGR-2 valve connector.
2)Check for proper terminal connection to “D01” connector and EGR-2 valve connector.
3)If connections are OK, check the following points.
•Resistance of “A1” and “A2” circuits: less than 1 Ω
•Resistance between each of “A1” and “A2” circuits and ground: infinity •Resistance between “A1” circuit terminal and other terminal at EGR-2 valve connector: infinity •Resistance between “A2” circuit terminal and other terminal at EGR-2 valve connector: infinity •Voltage of “A1” and “A2” circuits: approx. 0 V (When ignition is “ON”.) Is check result OK?
|
Go to Step 3.
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Repair or replace defective wire harness.
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| 3 |
EGR-2 valve check
1)Check EGR-2 valve.
Is check result OK?
|
Replace ECM and recheck EGR-2 valve operation.
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Replace EGR-2 valve.
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