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- Check engine coolant (Refer to GROUP 14 - On-vehicle Service - Engine
Coolant Leak Check).
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Q.
Is the check result normal?
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Replace or fill the engine coolant (Refer to GROUP 14 - On-vehicle Service - Engine
coolant change ).
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- Check the radiator fan (Refer to GROUP 14 - Troubleshooting ).
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Q.
Is the check result normal?
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- Check thermostat (Refer to GROUP 14 - Thermostat - Thermostat
Inspection ).
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Q.
Is the check result normal?
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Q.
Is the check result normal?
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Q.
Is the check result normal?
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- Engine coolant temperature sensor connector check.
- Disconnect connector, and measure at sensor side.
- Resistance between terminals.
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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 engine-ECU WTS line and body earth.
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Q.
Is the check result normal?
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- Check output line for open circuit and damage.
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Q.
Is the check result normal?
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Repair or replace the connector, or repair the damaged harness wire.
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- Item 7: 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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- Disconnect connector, and measure at harness side.
- Resistance between terminal engine-ECU WTSE line and body earth.
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OK: Continuity (2 Ω or less)
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Q.
Is the check result normal?
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- Check earthing line for open circuit and damage.
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Q.
Is the check result normal?
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Repair the damaged harness wire.
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