Has the Heater Blower Controls System Check been performed?

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Go to Step 2

Go to Heater Blower Controls System Check

1. Place the ignition switch in the RUN position.
2. Place the blower switch in the M1 position, next to the LO position.
3. Disconnect the connector at the blower resistor.
4. Connect a DMM (volts) between the blower resistor connector, cavity C, and ground.

Is battery voltage present?

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Go to Step 4

Go to Step 3

1. Disconnect connector C2 at the HVAC control module.
2. Connect a DMM (continuity) between pins B and G of the HVAC control module connector C2.
3. Turn the blower switch to the Med1 position (next to the Low position).

Is there continuity?

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Go to Step 6

Go to Step 5

Replace the blower motor resistor. Refer to Blower Motor Relay Replacement .

Is the repair complete?

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Go to Heater Blower Controls System Check

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Replace the HVAC control module. Refer to Blower Switch Replacement .

Is the repair complete?

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Go to Heater Blower Controls System Check

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Locate and repair the open in CKT 63 (TAN) between the HVAC control module and the blower resistor. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Heater Blower Controls System Check

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