Circuit/System Verification
WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
- Vehicle ON, observe the scan tool ECM Engine Coolant Temperature (ECT) parameter in freeze frame data.
- Verify the Engine Coolant Temperature parameter was below 125°C (257°F) when the DTC set.
- If the ECT was 125°C (257°F) or greater when the DTC set
Refer to Symptoms - Engine Cooling and correct that concern first.
- Go to next step: If the ECT was below 125°C (257°F) when the DTC set
- If the ECT was 125°C (257°F) or greater when the DTC set
- Inspect for proper coolant level in the hybrid cooling system reservoir.
- If coolant level is low
Refer to Hybrid Cooling System Loss of Coolant .
- Go to next step: If coolant level is OK
- If coolant level is low
- Inspect the hybrid/EV cooling system radiator for debris or obstruction.
- If a concern is found
Repair or replace the restricted or damaged components as necessary.
- Go to next step: If no concern is found
- If a concern is found
- Inspect for proper operation of all hybrid/EV system coolant pumps.
- If a concern is found
Repair or replace the coolant pumps as necessary.
- Go to next step: If no concern is found
- If a concern is found
- Verify the G10 Cooling Fan Motor activates when A/C is On.
- If the cooling fans do not operate
Refer to Cooling Fan Inoperative (LFV or LKN) .
- Go to next step: If the cooling fans operate
- If the cooling fans do not operate
- All OK.
NOTE:
A slight delay may occur before the cooling fan activates.