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. Remove the blower motor relay high.
2. Connect a DMM (continuity) between pins B2 and C1 of the relay.

Is continuity present?

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Go to Step 4

Go to Step 3

Replace the blower motor relay high. 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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1. Disconnect the connector at the blower motor resistor.
2. Connect a DMM (continuity) between the blower motor resistor connector cavity B and the blower motor relay high, cavity B2.

Is continuity present?

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Go to Step 6

Go to Step 5

Locate and repair the open in CKT 101 (DK BLU) between the blower motor resistor and the blower motor relay high. 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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1. Disconnect the HVAC control module connector C2.
2. Rotate the blower switch through all speeds while using a DMM (continuity) checking for continuity between pin G and the remaining pins of connector C2 (see schematic for appropriate pin to speed callout).

Is continuity present in all modes?

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Go to Step 7

Go to Step 8

Replace the blower motor resistor. Refer to Blower Motor Resistor 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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