ECT Sensor Check
Precautions: General safety (00)
Circuit Diagram
| [A]: | ECM connector (View: [a]) | A2: | ECT sensor ground circuit | 2. | ECT sensor |
| A1: | ECT sensor signal circuit | 1. | ECM |
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)Turn off all electrical loads.
4)Check that “ECT” displayed on SUZUKI scan tool is 80 to 110 °C (176 to 230 °F).
Is check result OK?
|
End.
|
Go to Step 2.
|
| 2 |
ECT sensor signal circuit and ground circuit check
1)When ignition is “OFF”, disconnect “D01” connector from ECM and ECT sensor connector.
2)Check for proper terminal connection to “D01” connector and ECT sensor 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 ECT sensor 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 |
ECT sensor check
1)Check ECT sensor.
Is check result OK?
|
Replace ECM and recheck parameter.
|
Replace ECT sensor.
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