Hybrid Cooling System Loss of Coolant
WARNING: This page is about a different variant/trim than selected.
| Step | Action | Yes | No |
|---|---|---|---|
| DEFINITION: The power inverter module (PIM) cooling system is losing coolant either internally or externally. | |||
| 1 | Inspect the coolant level. Is the coolant at the proper level? |
Go to Step 13 | Go to Step 2 |
| 2 | Fill the cooling system to the proper level. Refer to Drive Motor Generator Power Inverter Module Cooling System Draining and Filling . Is the action complete? |
Go to Step 3 | - |
| 3 | Overheating can cause a loss of coolant. Is the PIM Cooling system overheating? |
Go to Step 11 | Go to Step 4 |
| 4 | Visually inspect the hoses, pipes and hose clamps. Are any of the hoses, clamps or pipes leaking? |
Go to Step 12 | Go to Step 5 |
| 5 | Visually inspect the following components:
Are any of the listed components leaking? |
Go to Step 12 | Go to Step 6 |
| 6 |
|
Go to Step 12 | Go to Step 7 |
| 7 | Pressure test the coolant pressure cap. Refer to Hybrid Cooling System Pressure Cap Testing . Does the coolant pressure cap hold pressure? |
Go to Step 9 | Go to Step 8 |
| 8 | Replace the coolant pressure cap. Is the repair complete? |
Go to Step 13 | - |
| 9 |
|
- | Go to Step 10 |
| 10 | Replace the surge tank. Refer to Drive Motor Battery Radiator Surge Tank Replacement . Is the repair complete? |
Go to Step 13 | - |
| 11 | Repair the hybrid cooling system overheating condition. Is the repair complete? |
Go to Step 13 | - |
| 12 | Repair or replace the leaking component. Refer to the appropriate repair. Is the repair complete? |
Go to Step 13 | - |
| 13 | Operate the system in order to verify the repair.
NOTE:
Do not use stop leak or any other chemicals. Only use premix Dexcool (50/50 mixture of Dexcool and deionized water) Did you find and correct the condition? |
System OK | Go to Step 2 |