Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Engine Cooling Schematics Connector End View Reference: Cooling System Connector End Views DEFINITION: The engine cooling fan motor runs continuously in high or low speed. | |||
1 | Did you perform the Engine Cooling Diagnostic System Check? | Go to Step 2 | |
2 | Turn ON the ignition, with the engine OFF. Is the engine cooling fan ON? | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
3 | Disconnect the cooling fan 1 relay. Is the engine cooling fan ON? | Go to Step 4 | Go to Step 8 |
4 | Disconnect the cooling fan 2 relay. Is the engine cooling fan ON? | Go to Step 5 | Go to Step 9 |
5 |
Does the test lamp illuminate? | Go to Step 6 | Go to Step 7 |
6 | Repair the short to voltage in the low speed cooling fan motor supply voltage circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 12 | -- |
7 | Repair the short to voltage in the high speed cooling fan motor supply voltage circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 12 | -- |
8 | Inspect for poor connections at the cooling fan 1 relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Repairs. Did you find and correct the condition? | Go to Step 12 | Go to Step 10 |
9 | Inspect for poor connections at the cooling fan 2 relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Repairs. Did you find and correct the condition? | Go to Step 12 | Go to Step 11 |
10 | Replace the cooling fan 1 relay. Refer to Cooling Fan Relay Replacement . Did you complete the replacement? | Go to Step 12 | -- |
11 | Replace the cooling fan 2 relay. Refer to Cooling Fan Relay Replacement . Did you complete the replacement? | Go to Step 12 | -- |
12 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
