Just A Guy
Join Date: Mar 2007
Location: New Jersey
My Ride: 1990 Daytona Shelby
Engine: 2.2 L VNT
Thanked 1 Time in 1 Post
Re: 89 Daytona overhead console
Unfortunately I do have an exact location for the Ambient Temp Sensor.
It is a two wire sensor probably located on or near the radiator support.
The wire colors are VT and BK.
Unfortunately I do not have diagnostics for the OHC.
The Module is one unit for the Compass/Temp and is not serviceable,it has to be replaced as a complete unit.
The Chrysler Part # is 4374061.
All you can do is check resistance of the temp sensor and check wiring from underhood to the OHC for opens or shorts.
It is possible somebody has diagnosed and repaired the unit and will chime in and lead you on the correct path.
1990 Daytona Shelby VNT
40 Years ASE Certified (Retired)