| Coolant loss |
- Hoses
- Hose connections
- Radiator
- Coolant pump
- Heater core
- Gaskets
- Engine casting cracks
- Cylinder block core plugs
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| Coolant loss still evident after carrying out PINPOINT TEST A |
- Cylinder head core plug(s)
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| Engine overheating |
- Engine coolant (level/condition)
- Thermostat
- Fan motor
- Fan motor fuses and/or circuits
- Engine coolant temperature sensor
- Engine control module
- Fan speed module
|
|
| Engine not reaching normal operating temperature |
- Thermostat
- Electric fan
- Fan speed module
|
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| Message centre displays "Coolant Level Low" warning message |
- Coolant loss
- Engine coolant level sensor fault
- Engine coolant level sensor circuit fault
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