Check the HVAC fuse in the fuse block.

Is the 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 vacuum/electric solenoid harness connector terminal 6 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 Recirculation (MAX) control in the ON position.
2. Connect a test lamp between B+ and circuit 363 (TAN) at the vacuum/electric solenoid harness connector terminal 4.

Does the test lamp light?

--

Go to Step 8

Go to Step 6

Check for poor connection or open in circuit 363 (TAN).

Is there a poor connection or open in the circuit?

--

Go to Step 7

Go to Step 10

Locate and repair the fault in circuit 363 (TAN).

Is the repair complete?

--

System OK

--

There is a fault in vacuum/electric solenoid, vacuum source, vacuum actuators, vacuum hoses to actuators, linkage from actuators to values, or faulty valves. Refer to Vacuum System for further diagnosis.

Is the action complete?

--

System OK

--

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

Is the repair complete?

--

System OK

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