1. Turn off the blower.
2. Test the temperature control effort.

Is the proper effort required?

--

System OK

Go to Step 2

Determine if excessive effort is required.

Is excessive effort required?

--

Go to Step 3

Go to Step 12

Inspect the cable for the following conditions:

Do one of these conditions exist?

--

Go to Step 13

Go to Step 4

1. Remove the cable from the temperature valve.
2. Cycle the valve manually.
3. Inspect the valve for binding.

Is there valve binding?

--

Go to Step 10

Go to Step 5

Inspect for control binding.

Is there control binding?

--

Go to Step 6

Go to Step 8

1. Remove the cable.
2. Inspect for control binding.

Is there control binding?

--

Go to Step 7

Go to Step 9

Replace the control. Refer to Control Assembly Replacement .

Is the replacement complete?

--

System OK

--

1. Reinstall the cable.
2. Inspect the clearances to the dash components.

Is the inspection complete?

--

System OK

--

Replace the cable(s). Refer to Temperature Control Cable Replacement .

Is the replacement complete?

--

System OK

--

1. Lubricate the valve.
2. Retest the valve for binding.

Does the valve bind?

--

Go to Step 11

System OK

1. Inspect the temperature valve for the following conditions:

•	Shaft alignment

•	A bent shaft

•	A bent valve

•	A warped case

2. Repair any of these conditions.

Is the repair complete?

--

System OK

--

1. Remove the cable from the control.
2. Inspect the control in order to see if the control has detents.

Does the control have detents?

--

Go to Step 13

Go to Step 14

Replace the cable. Refer to Temperature Control Cable Replacement .

Is the replacement complete?

--

System OK

--

Replace the control. Refer to Control Assembly Replacement .

Is the replacement complete?

--

System OK

--