A/C is stuck in defrost

ANOTHERPRO

MEMBER
2002 NISSAN SENTRA
1.8L
4 CYL
2WD
AUTOMATIC
130,000 MILES

My defrost is blowing cold but my air conditioner doesn't blow at all. I want to begin troubleshooting but I’d like to know if this vehicle’s AC is electric or vacuum controlled.

Wednesday, July 10th, 2019 AT 8:03 AM

1 Reply

JACOBANDNICKOLAS

MECHANIC
109,755 POSTS

Welcome to 2CarPros.

It sounds like the mode door actuator has failed. This vehicle is has a cable that controls air flow direction. I attached a picture of it. Also, often times the cable will slip in its mount and simply need adjusted.

Here are the directions for adjustment. The attached picture also correlates with the directions.

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Mode Door Control Linkage
- Turn mode door control knob to position.
- Set side link in DEF mode.
- Pull on outer cable in direction of arrow and then clamp it.
- After positioning mode door control cable, check that it operates properly.

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Let me know if this helps or if you have other questions.

Take care,
Joe

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