AC control unit not working

2003 TOYOTA CROWN
130,000 MILES • 3.0L • V6 • 2WD • AUTOMATIC
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MOS DIZ
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  • 13 POSTS
My car's AC doesn't work only displays F and 1. What could be the problem?
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Mar 27, 2019 at 11:39 AM
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JACOBANDNICKOLAS
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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
Mar 28, 2019 at 8:15 PM
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MOS DIZ
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No, it hasn't been scanned yet though it doesn't show any errors on the dashboard.
Mar 29, 2019 at 2:44 AM
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JACOBANDNICKOLAS
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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
Mar 29, 2019 at 8:44 PM
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MOS DIZ
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Okay, I'll run a diagnostic test and let you know.
Mar 29, 2019 at 10:20 PM
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JACOBANDNICKOLAS
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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
Mar 30, 2019 at 7:20 PM