Pinpoint Test A: Loss Of Engine Coolant
WARNING: This page is about a different variant/trim than selected.
- A1 CHECK THE ENGINE COOLANT LEVEL NOTE: Allow the engine to cool before checking the engine coolant level.
- Key in OFF position.
- Visually check the engine coolant level at the degas bottle (front reservoir).
- Is the engine coolant level within specification?
- Yes : GO to A2.
- No : FILL the engine coolant as necessary. GO to A6.
- A2 CHECK THE DEGAS BOTTLE ENGINE COOLANT PRESSURE RELIEF CAP WARNING: To avoid personal injury, do not unscrew the coolant pressure relief cap while the engine is operating or hot. The cooling system is under pressure; steam and hot liquid can come out forcefully when the cap is loosened slightly.
- Inspect the engine coolant pressure relief cap for foreign material between the sealing gasket and the diaphragm.
- Is the pressure relief cap OK?
- Yes : GO to A5.
- No : CLEAN or INSTALL a new pressure relief cap. TEST the system for normal operation. GO to A3.
- A3 CHECK THE ENGINE COOLANT FOR AN INTERNAL LEAK WARNING: To avoid personal injury, do not unscrew the coolant pressure relief cap while the engine is operating or hot. The cooling system is under pressure; steam and hot liquid can come out forcefully when the cap is loosened slightly.
- Key in OFF position.
- Inspect the engine coolant in the degas bottle (front reservoir) for signs of engine oil.
- Is oil evident in the coolant?
- Yes : If engine oil is evident, REFER to ENGINE SYSTEM-GENERAL INFORMATION .
- No : GO to A5.
- A4 CHECK THE ENGINE OIL FOR COOLANT
- Remove the oil level indicator from the engine.
- Is coolant evident in the oil?
- Yes : If coolant is in the engine, REFER to ENGINE SYSTEM-GENERAL INFORMATION .
- No : GO to A5.
- A5 PRESSURE TEST THE ENGINE COOLING SYSTEM
- Pressure test the engine cooling system. Refer to the COMPONENT TESTS .
- Does the engine cooling system leak?
- Yes : REPAIR or INSTALL new components. TEST the system for normal operation.
- No : The cooling system is operational. GO to SYMPTOM CHART .
- A6 CHECK THE DEGAS BOTTLE
- Add engine coolant to the degas bottle (front reservoir) until fluid is between the coolant fill level marks.
- Does the degas bottle leak?
WARNING: To avoid personal injury, do not unscrew the coolant pressure relief cap while the engine is operating or hot. The cooling system is under pressure; steam and hot liquid can come out forcefully when the cap is loosened slightly.NOTE: The engine must be cool when coolant is added to the degas bottle.- Yes : INSTALL a new degas bottle. TEST the system for normal operation.
- No : CARRY OUT the cooling system pressure test. REFER to the COMPONENT TESTS . REPAIR as necessary. TEST the system for normal operation.