|
- Item 06: 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 ).
|
|
|
|
Q.
Is the check result normal?
|
|
Repair or replace the connector.
|
|
|
|
- Disconnect connector, and measure at sensor side.
- Resistance between terminal No. 1 and No. 2.
|
|
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
|
|
Q.
Is the check result normal?
|
|
Replace the engine coolant temperature sensor.
|
|
|
|
- Use special tool test harness (MB991709) to connect connector,
and measure at pick-up harness.
- Ignition switch: ON
- Voltage between terminal No. 1 and earth.
|
|
OK:
Engine coolant temperature at -20°C: 3.9 - 4.5 V Engine coolant temperature at 0°C: 3.2 - 3.8 V Engine coolant temperature at 20°C: 2.3 - 2.9 V Engine coolant temperature at 40°C: 1.3 - 1.9 V Engine coolant temperature at 60°C: 0.7 - 1.3 V Engine coolant temperature at 80°C: 0.3 - 0.9 V
|
|
Q.
Is the check result normal?
|
|
Q.
Is the check result normal?
|
|
- Check output line for damage.
|
|
Q.
Is the check result normal?
|
|
- Item 06: 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 <M/T> or engine-A/T-ECU <A/T>.
|
|
|