Did you perform the HVAC Blower Controls System Check?

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Go to Step 2

Go to HVAC Blower Controls System Check

Replace the blower motor relay with a known good relay.

Does the blower motor operate correctly?

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Go to Step 3

Go to Step 4

Replace the blower motor relay.

Is the repair complete?

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Go to HVAC Blower Controls System Check

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1. Turn the ignition to the OFF position.
2. Disconnect the blower motor connector.
3. Use a test lamp in order to backprobe the underhood wiring harness junction block connector C3 between terminal D9 and ground.

Does the test lamp light?

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Go to Step 5

Go to Step 6

Repair the short to battery positive in CKT 52 between the heater A/C control assembly connector C1 terminal C and the underhood wiring harness junction block connector C3 terminal D9. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to HVAC Blower Controls System Check

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1. Remove the blower motor relay.
2. Disconnect the underhood wiring harness junction block connector C3.
3. Use a test lamp connected to ground in order to probe the underhood wiring harness junction block relay cavity 30 (CKT 65).

Does the test lamp light?

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Go to Step 7

Go to Step 8

Replace the underhood wiring harness junction block.

Is the repair complete?

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Go to HVAC Blower Controls System Check

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1. Reconnect the underhood wiring harness junction block connector C3.
2. Disconnect the blower motor connector.
3. Use a test lamp connected to ground in order to backprobe the blower motor connector terminal B.

Does the test lamp light?

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Go to Step 9

Go to Step 10

Repair the short to positive battery voltage in CKT 65 between the underhood wiring harness junction block and the blower motor connector.

Is the repair complete?

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Go to HVAC Blower Controls System Check

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Replace the heater A/C control assembly. Refer to Control Assembly Replacement .

Is the repair complete?

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Go to HVAC Blower Controls System Check

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