Verify the customer's complaint.

Are the customer's concerns verified?

Go to Step 2

System OK

Move controls other than the temperature adjustment.

Is an excessive effort required to move the controls?

Go to Step 15

Go to Step 3

Move the temperature control.

Is an excessive effort required to move the controls?

Go to Step 6

Go to Step 4

Move the temperature control.

Does the temperature door move too easily?

Go to Step 5

System OK

Remove the cable from the controller.

Does the control knob turn freely without the click stops?

Go to Step 15

--

Inspect the cables for improper routing, kinks, wiring interference, or other instrument panel interference.

Is there a problem?

Go to Step 7

Go to Step 8

Repair as needed.

Did you complete the repair?

System OK

-

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

Is there any door binding?

Go to Step 9

Go to Step 12

Inspect a binding door for shaft alignment, a bent shaft, a bent door, or a warped case.

Is the door seal OK?

Go to Step 10

Go to Step 11

1. Inspect a binding door for shaft alignment, a bent shaft, a bent door, or a warped case.
2. Repair as needed.

Did you find and correct the condition?

System OK

--

Repair the door seal as needed.

Did you complete the repair?

System OK

--

Inspect for control binding.

Does the control bind?

Go to Step 14

Go to Step 13

1. Reinstall the cable to the door.
2. Inspect the clearance for the cable-to-dash components.
3. Repair any interference.

Did you find and correct the condition?

System OK

--

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

Does the control bind?

Go to Step 15

Go to Step 16

Replace the control.

Did you complete the replacement?

System OK

--

Replace the cable.

Did you complete the replacement?

System OK

--