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- Item 07: Engine coolant temperature sensor
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OK:
Engine cold state:
At ambient temperature (atmospheric temperature) or equivalent. Engine
hot state: At 80 - 120°C
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Q.
Is the check result normal?
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Intermittent malfunction (Refer to
GROUP 00 - How to Use Troubleshooting/Inspection Service Points
- How to Cope with Intermittent Malfunctions ).
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Q.
Is the check result normal?
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Repair
or replace the connector.
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- Disconnect connector, and measure at sensor side.
- Resistance between terminal No. 1 and No. 2.
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OK:
Engine coolant
temperature at -20°C: 14 - 17 kΩ Engine
coolant temperature at 0°C: 5.1 - 6.5 kΩ Engine
coolant temperature at 20°C: 2.1 - 2.7 kΩ Engine
coolant temperature at 40°C: 0.9 - 1.3 kΩ Engine
coolant temperature at 60°C: 0.48 - 0.68 kΩ Engine
coolant temperature at 80°C: 0.26 - 0.36
kΩ
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Q.
Is the check result normal?
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Replace the engine coolant temperature
sensor.
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- Disconnect connector and measure at harness side.
- Ignition switch: ON
- Voltage between terminal No. 1 and earth.
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Q.
Is the check result normal?
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|
Q.
Is the check result normal?
|
|
Repair
or replace the connector.
|
|
|
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- Check output line for open circuit.
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|
Q.
Is the check result normal?
|
|
Repair
the damaged harness wire.
|
|
|
|
- Item 07: Engine coolant temperature sensor
|
|
OK:
Engine cold state:
At ambient temperature (atmospheric temperature) or equivalent. Engine
hot state: At 80 - 120 °C
|
|
Q.
Is the check result normal?
|
|
Intermittent malfunction (Refer to
GROUP 00 - How to Use Troubleshooting/Inspection Service Points
- How to Cope with Intermittent Malfunctions ).
|
|
|
|
Replace the engine-ECU. When the
engine-ECU is replaced, write the chassis number (Refer to GROUP 00 -
Precautions Before Service - How to Perform Chassis Number Writing ). After replacing the
engine-ECU, register the injector identification code and learn fuel
injection (Refer to GROUP 00 - Precautions Before Service -
What The Common Rail Engine Learns ).
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- Disconnect connector, and measure at harness side.
- Resistance between terminal No. 2 and earth.
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OK: Continuity (2 Ω or
less)
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Q.
Is the check result normal?
|
|
Q.
Is the check result normal?
|
|
Repair
or replace the connector.
|
|
|
|
- Check earthing line for open circuit.
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Q.
Is the check result normal?
|
|
Repair
the damaged harness wire.
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