Inlet Throttle Valve Position Sensor 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 |
Was “Inlet Throttle Valve Operation Check” performed?
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Go to Step 2.
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| 2 |
Inlet throttle valve position sensor power supply circuit and ground circuit check
1)When ignition is “OFF”, disconnect inlet throttle valve connector.
2)Check for proper terminal connection to inlet throttle valve 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?
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Go to Step 5.
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Go to Step 3.
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| 3 |
Inlet throttle valve position sensor ground circuit check
1)Check that voltage between “B1” circuit and ground is approx. 5 V.
Is check result OK?
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Repair “B3” circuit.
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Go to Step 4.
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| 4 |
Inlet throttle valve position 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 inlet throttle valve connector: infinity •Voltage of “B1” circuit: approx. 0 V (When ignition is “ON”) Is check result OK?
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Go to Step 5.
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Repair defective wire harness.
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| 5 |
Inlet throttle position 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 inlet throttle valve connector: infinity •Voltage of “B2” circuit: approx. 0 V (When ignition is “ON”) Is check result OK?
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Go to Step 6.
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Repair or replace defective wire harness.
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| 6 |
Inlet throttle valve position sensor check
1)Check inlet throttle valve position sensor.
Is check result OK?
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Replace ECM and recheck parameter.
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Replace inlet throttle valve.
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