For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Was the Cooling Fan System Check performed? | -- | Go to Step 2 | Go to the Cooling Fan System Check
2 |

1. Ensure that the engine coolant temperature is below 93°C (199°F)
2. Remove the fan no. 1 relay from fuse and relay block 1.
3. Start the engine.

Does the fan motor run?

--

Go to Step 3

Go to Step 4

3 | Repair the short to voltage in the BLK/RED wire between the fan motor terminal 2 and fuse relay block 1. Is the repair complete? | -- | Go to the Cooling Fan System Check | --
4 | Test for an open in the BLU/BLK wire between the fan no. 1 relay in fuse and relay block 1 and fuse and relay block 2. Is an open present? | -- | Go to Step 8 | Go to Step 5
5 | Test for an open in the LT GRN wire between fuse and relay block 2 and the fan control switch. Is an open present? | -- | Go to Step 8 | Go to Step 6
6 | Test the fan control switch. The fan control switch should be closed below 83°C (181°F) and open above 93°C (199°F). Is the fan control switch operating properly? | -- | Go to Step 7 | Go to Step 9
7 | Replace the fan no. 1 relay. Refer to Cooling Fan Relay Replacement . Is the repair complete? | -- | Go to the Cooling Fan System Check | --
8 | Repair the open/short. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to the Cooling Fan System Check | --
9 | Replace the fan control switch. Refer to Engine Cooling Fan Control Switch Replacement . Is the repair complete? | -- | Go to the Cooling Fan System Check | --