1. Place the ignition switch in the RUN position.
2. Place the HVAC selector in the vent position.
3. Place the blower switch in the LO position.
4. With a digital multimeter, measure the voltage between the blower motor relay connector cavity 87A and ground.

Is the voltage greater than the specified value?

4 V

Go to Step 2

Go to Step 5

Check for a poor connection at the blower motor relay.

Was a poor connection found?

--

Go to Step 3

Go to Step 4

Repair the bad connection at the blower motor relay.

Is the repair complete?

--

System OK

--

Replace the blower motor relay.

Is the repair complete?

--

System OK

--

1. Disconnect the connector at the blower motor resistor.
2. Connect a self-powered test lamp between the blower motor resistor connector cavity C and the high blower motor relay socket cavity 87A.

Does the test lamp light.

--

Go to Step 6

Go to Step 7

Replace the blower motor resistor.

Is the repair complete?

--

System OK

--

Repair the open in the CKT 101 (DK BLU) between the blower resistor and the high blower motor relay.

Is the repair complete?

--

System OK

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