DEFINITION: The main fan motor and/or the auxiliary fan motor runs continuously with the ignition switch in the RUN position.

Did you perform the HVAC System Check?

Go to Step 2

Go to the HVAC System Check

Are both fan motors running continuously?

Go to Step 12

Go to Step 3

Is only the main fan motor running continuously?

Go to Step 8

Go to Step 4

Is only the auxiliary fan motor running continuously?

Go to Step 5

Go to Step 1

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

Does the auxiliary fan motor run?

Go to Step 6

Go to Step 7

Repair the short to ground in the WHT wire between the auxiliary fan motor terminal 1 and fuse and relay block 2. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to the HVAC System Check

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Replace the A/C fan no. 2 relay. Refer to Condenser Fan Relay Replacement .

Is the repair complete?

Go to the HVAC System Check

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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.
4. Turn the A/C off.

Does the main fan motor run?

Go to Step 9

Go to Step 10

Repair the short to voltage in the BLK/RED wire between the main fan motor terminal 2 and fuse relay block 1. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to the HVAC System Check

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Test for an open in the BLU/BLK wire between the fan no. 1 relay in fuse and relay block 1 and the A/C fan no. 2 relay in fuse and relay block 2.

Is an open present?

Go to Step 18

Go to Step 11

Replace the fan no. 1 relay. Refer to Cooling Fan Relay Replacement in Engine Cooling.

Is the repair complete?

Go to the HVAC System Check

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1. Remove the A/C fan no. 3 relay from fuse and relay block 2.
2. Start the engine.
3. Turn the A/C off.

Do both fan motors run?

Go to Step 16

Go to Step 13

1. Test the A/C MG relay for continuity between terminals 3 and 5. Refer to

   Fuse and Relay Block 2

   
   
   
2. Test the A/C fan no. 3 relay for continuity between terminals 3 and 5. Refer to

   Fuse and Relay Block 2

   
   
   

Does continuity exist in either relay?

Go to Step 14

Go to Step 15

Replace the faulty relay. Refer to Condenser Fan Relay Replacement .

Is the repair complete?

Go to the HVAC System Check

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Repair the short to voltage in the BLK/WHT wire between the A/C fan no. 3 relay terminal 1 in fuse and relay block 2 and the A/C MG relay terminal 3 in fuse and relay block 2. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to the HVAC System Check

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1. Test for an open in the BLU/BLK wire between the A/C fan no. 2 relay and the A/C refrigerant pressure switch connector.
2. Test for an open in the LT GRN wire between the A/C refrigerant pressure switch connector and the fan control switch.

Is an open present?

Go to Step 18

Go to Step 17

Test for an open in the A/C refrigerant pressure switch.

Is an open present?

Go to Step 19

Go to Step 20

Repair the open/short. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to the HVAC System Check

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Replace the A/C refrigerant pressure switch, if equipped. Refer to A/C Refrigerant Pressure Sensor Replacement .

Is the repair complete?

Go to the HVAC System Check

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Replace the fan control switch. Refer to Engine Cooling Fan Control Switch Replacement in Engine Cooling.

Is the repair complete?

Go to the HVAC System Check

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