Check the DIC/HVAC fuse in the fuse block.

Is the DIC/HVAC fuse open?

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Go to Step 2

Go to Step 3

Locate and repair a short to ground in circuit 41 (BRN).

Is the repair complete?

--

System OK

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1. Place the ignition switch in the on position.
2. Connect a test lamp between the HVAC Control module harness connector C 1 terminal B and ground.

Does the test lamp light?

--

Go to Step 5

Go to Step 4

Locate and repair a poor connection or an open in circuit 41 (BRN).

Is the repair complete?

--

System OK

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1. Place the heater A/C blower control in the OFF position.
2. Connect a test lamp between the heater A/C control connector C 2 terminal A and ground.

Does the test lamp light?

Go to Step 8

Go to Step 6

Check for a poor connection or an open in circuit 119 (WHT) between the heater A/C control connector C 2 terminal A and connector C 1 terminal A.

Is there a poor connection or open in the circuit?

--

Go to Step 7

Go to Step 9

Repair the fault in circuit 119 (WHT).

Is the repair complete?

--

System OK

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1. Place the mode selector in the MAX position.
2. Turn the blower ON.
3. Determine if the air is flowing from the A/C outlets.

Is the air flowing from these outlets?

--

System OK

Go to Vacuum System

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

Is the repair complete?

--

System OK

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