Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Inspect the radiator for stains and wetness. Are there any stains or is there any wetness on the radiator? | -- | Go to Step 2 | Go to Step 3 |
2 | Repair as necessary. Is there still a coolant loss? | -- | Go to Step 3 | Go to Step 16 |
3 | Inspect the coolant hoses for stains and wetness. Are there any stains or is there any wetness on the coolant hoses? | -- | Go to Step 4 | Go to Step 5 |
4 | Repair as necessary. Is there still a loss of coolant? | -- | Go to Step 5 | Go to Step 16 |
5 | Inspect the water pump for stains and wetness. Are there any stains or is there any wetness on the water pump? | -- | Go to Step 6 | Go to Step 7 |
6 | Repair as necessary. Is there still a loss of coolant? | -- | Go to Step 9 | Go to Step 16 |
7 | Inspect the heater core for stains and wetness. Are there any stains or wetness on the heater core? | -- | Go to Step 8 | Go to Step 9 |
8 | Repair as necessary. Is there still a loss of coolant? | -- | Go to Step 9 | System OK |
9 | Inspect the coolant recovery reservoir or surge tank for leakage. Does the coolant overflow from the reservoir with the engine off? | -- | Go to Step 10 | Go to Step 15 |
10 | Inspect the radiator cap for proper pressure retention. Does the radiator cap maintain the correct pressure? | 103 kPa (15 psi) | Go to Step 11 | Go to Step 12 |
11 | Inspect the temperature reading of the thermostat. Refer to Thermostat Diagnosis . Is the temperature too high? | -- | Go to Engine Overheating | Go to Step 13 |
12 | Replace the radiator cap. Is there still a coolant loss? | -- | Go to Step 13 | -- |
13 | Inspect the coolant concentration. Is the coolant concentration too low? | -- | Go to Step 14 | Go to Step 16 |
14 |
Notice: When adding coolant, use DEX-COOL® coolant. If silicated coolant is added to the system, premature engine, heater core or radiator corrosion may result. In addition, the engine coolant will require change sooner-at 50 000 km (30,000 mi) or 24 months. Replace the coolant with the proper mixture of DEX-COOL™. Is there still a coolant loss? | -- | Go to Step 1 | Go to Step 16 |
15 | Test for a coolant leak inside the engine. Did you find and correct the condition? | -- | Go to Step 16 | Go to Step 1 |
16 | Retest the cooling system for leaks. Is there a coolant loss? | -- | Go to Step 1 | System OK |
