Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference : Engine Cooling Schematics DEFINITION: One or both engine cooling fan motors run continuously in high or low speed. | |||
1 | Did you perform the Engine Cooling Diagnostic System Check? | Go to Step 2 | |
2 |
Important: The cooling fan fuses and cooling fan relays 1 and 2 are labeled incorrectly on the underhood sticker. Refer to Electrical Center Identification Views in Wiring Systems for the proper locations. Turn ON the ignition, with the engine OFF. Are one or both cooling fans ON? | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
3 | Are both cooling fans running continuously? | Go to Step 5 | Go to Step 4 |
4 | Remove the cool fan S/P relay. Did the right cooling fan turn OFF? | Go to Step 8 | Go to Step 6 |
5 | Remove the cool fan 1 relay. Did the cooling fans turn OFF? | Go to Step 10 | Go to Step 7 |
6 | Remove the cool fan 2 relay. Did the right cooling fan turn OFF? | Go to Step 11 | Go to Step 9 |
7 | Repair the short to voltage in the left cooling fan motor supply voltage circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 14 | -- |
8 | Repair the short to voltage in the left cooling fan low reference circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 14 | -- |
9 | Repair the short to voltage in the right cooling fan motor supply voltage circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 14 | -- |
10 | Inspect for poor connections at the cool fan 1 relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 12 |
11 | Inspect for poor connections at the cool fan 2 relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 13 |
12 | Replace the cool fan 1 relay. Did you complete the replacement? | Go to Step 14 | -- |
13 | Replace the cool fan 2 relay. Did you complete the replacement? | Go to Step 14 | -- |
14 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
