1. Install the scan tool?
2. Turn the ignition switch to the ON position.
3. Select BLOWER CONTROLLER VOLTAGE from the data list.
4. Press the OFF button on the heater & A/C control.

Does the scan tool display a voltage reading greater than 6 V?

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Go to Step 2

Go to Step 3

Repair the short to voltage on CKT FP812 (BLK/BLU).

Did you complete the repair?

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Go to Step 4

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Disconnect the blower motor ground (BRN wire) from the blower controller.

Did the blower motor stop operating?

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Go to Step 5

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1. Reassemble any connectors/components removed in previous steps.
2. Turn the ignition switch to the ON position.
3. Select AUTO mode on the heater & A/C control.
4. Cycle through all the blower speeds.

Do all the blower speeds operate properly?

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System OK

Go to Step 6

Replace the blower controller.

Did you complete the replacement?

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Go to Step 4

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Replace the heater & A/C control. Refer to Heater & A/C Control Replacement.

Did you complete the replacement?

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System OK

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