Step | Action | Values | Yes | No | ||||||
---|---|---|---|---|---|---|---|---|---|---|
1 |
Is the engine coolant temperature (ECT) between 82-102°C (180-216°F)? | 13-38°C (55-100°F) | System OK | Go to Step 2 | ||||||
2 | Is the ECT below 82°C (180°F)? | -- | Go to Step 3 | Go to Step 4 | ||||||
3 | The thermostat is opening early, or the thermostat seal is leaking. Replace the thermostat and the thermostat seal. Refer to Engine Coolant Thermostat Replacement . Is the repair complete? | -- | System OK | -- | ||||||
4 | Is the ECT over 102°C (216°F)? | -- | Go to Step 5 | -- | ||||||
5 | Is the radiator inlet hot? | -- | Go to Step 6 | Go to Step 7 | ||||||
6 |
Is the air hot? | -- | Go to Step 11 | Go to Step 12 | ||||||
7 | There may be air in the system.
Is the inlet hose hot? | -- | Go to Step 6 | Go to Step 8 | ||||||
8 | Inspect for blockage in the following areas:
Is there a blockage? | -- | Go to Step 9 | Go to Step 10 | ||||||
9 |
Is the repair complete? | -- | System OK | -- | ||||||
10 |
Is the repair complete? | -- | System OK | -- | ||||||
11 | Inspect for blockage in the radiator. Is there any blockage? | -- | Go to Step 9 | Go to Step 10 | ||||||
12 |
Is there any blockage? | -- | Go to Step 9 | Go to Step 13 | ||||||
13 | Refer to Diagnostic Starting Point - Heating, Ventilation and Air Conditioning . Is the repair complete? | System OK | -- |