1. Place the ignition switch in the RUN position.
2. Place the temperature selector in the LOW blower speed.
3. Disconnect the connector at the blower motor resistor.
4. Connect a J39200 between the blower motor resistor connector terminal 1 for the CKT 196 (BLU/WHT) wire and the chassis ground.

Does the DMM indicate continuity?

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Go to Step 2

Go to Step 3

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

Is the repair complete?

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System OK

Go to Step 3

1. Disconnect the A/C mode switch connector.
2. Connect a test lamp between connector C3 terminal 2 and chassis ground.

Does the test lamp light?

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Go to Step 4

Go to Step 5

Locate and repair the open in CKT 180/196 (BLU/WHT) wire between the A/C mode switch and the blower motor resistor.

Does the test lamp light?

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Ststem OK

Go to Step 5

Replace the A/C mode switch. Refer to Control Assembly Replacement .

Is the repair complete?

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System OK

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