Was the entire HVAC System Check performed?

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Go to Step 2

Go to HVAC System Check

1. Place the ignition switch in the RUN position.
2. With a test light, backprobe the heater-A/C control between connector C1 terminal B and ground.

Is the test light on?

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Go to Step 3

Go to Step 4

1. Place the heater-A/C control in position 1.
2. With a test light, backprobe the heater-A/C control between connector C1 terminal H and ground.

Is the test light on?

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Go to Step 5

Go to Step 6

Is the FRT HVAC LOW/MED BLWR Fuse open?

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Go to Step 12

Go to Step 13

Connect a test light between the blower motor connector terminal A and terminal B.

Is the test light on?

--

Go to Step 7

Go to Step 8

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

Is the repair complete?

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Go to Step 11

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Replace the blower motor. Go to Blower Motor and Fan Replacement .

Is the repair complete?

--

Go to Step 11

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Connect the test light between the blower motor resistor connector terminal E and B+.

Is test light on?

--

Go to Step 9

Go to Step 10

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

Is the repair complete?

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Go to Step 11

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Repair the poor connection or open in CKT 150.

Is the repair complete?

--

Go to Step 11

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1. Turn the ignition switch to the OFF position.
2. Reconnect all connectors/components removed.

Have all the repairs been made?

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Go to HVAC System Check

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1. Turn the igntion switch to the OFF position.
2. Disconnect the heater-A/C control connector C1.
3. Check for a short to ground in CKT 41.

Is a short to ground present?

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Go to Step 14

Go to Step 6

Repair the open in CKT 41 between heater-A/C control and the fuse block.

Is the repair complete?

--

Go to Step 11

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Repair a short to ground in CKT 41.

Is the repair complete?

--

Go to Step 11

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