Inlet Throttle Valve Operation Check
Precautions: General safety (00)
Circuit Diagram
| [A]: | ECM connector (View: [a]) | B1: | Inlet throttle valve position sensor power supply circuit | 1. | ECM |
| A1: | Inlet throttle valve (+) drive circuit | B2: | Inlet throttle valve position sensor signal circuit | 2. | Inlet throttle valve motor |
| A2: | Inlet throttle valve (–) drive circuit | B3: | Inlet throttle valve position sensor ground circuit | 3. | Inlet throttle 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 “Inlet Throttle Valve” function in “Active Test” mode on SUZUKI scan tool.
5)Check inlet throttle valve operation sound.
Is check result OK?
|
End.
|
Go to Step 2.
|
| 2 |
Inlet throttle valve (+) drive circuit and (–) drive circuit check
1)When ignition is “OFF”, disconnect “D01” connector from ECM and inlet throttle valve connector.
2)Check for proper terminal connection to “D01” connector and inlet throttle 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 inlet throttle valve connector: infinity •Resistance between “A2” circuit terminal and other terminal at inlet throttle valve connector: infinity •Voltage of “A1” and “A2” circuits: approx. 0 V (When ignition is “ON”.) Is check result OK?
|
Go to Step 3.
|
Repair or replace defective wire harness.
|
| 3 |
Inlet throttle valve check
1)Check inlet throttle valve.
Is check result OK?
|
Replace ECM and recheck EGR-2 valve operation.
|
Replace inlet throttle valve.
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