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AC control unit not working

Tiny
MOS DIZ
  • MEMBER
  • 2003 TOYOTA CROWN
  • 3.0L
  • V6
  • 2WD
  • AUTOMATIC
  • 130,000 MILES
My car's AC doesn't work only displays F and 1. What could be the problem?
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Wednesday, March 27th, 2019 AT 11:39 AM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Welcome to 2CarPros.

First, I have to tell you this vehicle isn't available in the US, so my technical information is very limited. However, I have to start by asking if the computer was scanned to identify diagnostic trouble codes?

Let me know.

Joe
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Thursday, March 28th, 2019 AT 8:15 PM
Tiny
MOS DIZ
  • MEMBER
  • 13 POSTS
No, it hasn't been scanned yet though it doesn't show any errors on the dashboard.
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Friday, March 29th, 2019 AT 2:44 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Welcome back:

There could still be HVAC codes stored. It sounds related to the HVAC control module, and that should set a code.

Let me know,
Joe
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Friday, March 29th, 2019 AT 8:44 PM
Tiny
MOS DIZ
  • MEMBER
  • 13 POSTS
Okay, I'll run a diagnostic test and let you know.
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Friday, March 29th, 2019 AT 10:20 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Sounds like a plan. Let me know if you find anything. Also, keep in mind you have to have a scanner that is able to read other than P type (power-train) codes.

Take care,
Joe
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Saturday, March 30th, 2019 AT 7:20 PM

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