ac trouble codes
Burning Brakes
Joined: Dec 2000
Posts: 1,161
Likes: 0
From: Orangeburg, NY
These are diag. mode on a 89.
Press the Ext. Temp. button.
While pressing the Ext. Temp Button, press the Auto Fan button and then release it. Then release the Ext. Temp. button.
a -00 should appear. - indicating what Mode is displayed.
Mode 1 is Program number
Mode 2 is in vehicle thermistor
Mode 3 Ambient correction
Mode 4 Blower number
Mode 5 Outside thermistor
Mode 6 Feed back pot position
Mode 7 Calculated door position
Mode 8 System faults
Mode 9 Ratiometric feedback position
Mode 10 Full hot position
Mode 11 Full code position
Mode 12 Software version
To change Mode # press the Warm button.
To see the value in that Mode # press the Cool button.
A system fault is indicated by a flashing indicator. If there is a problem with the ambient sensor, in
vehicle sensor, or the feedback potentiometer, the Ext. Temp. indicator will flash for about 60 seconds,
upon ignition ON. The flashing indicator will reoccur upon ignition ON until the system problem has been corrected.
If you disconnect the battery and reconnect it, the system will recalibrate and move the door from one extreme to the other and then position the door and stop. The blower motor also comes on and you can manually turn it off. Takes about 30 seconds.
To enter the diagnostic mode, push and hold the fan up and down arrows at the same time for about 5 seconds.
The display should show "-00".
Push "Auto" and the display will show any fault codes that are stored in the computer.
00-Not used
01-Temp. Door Motor Circuit Fault
02-Temp Door Motor Circuit Fault
03- Ambient Sensor Open
04- Ambient Sensor Short
05- In-Car Temp Sensor Open
06- In-Car Temp Sensor Short
07- Solar Load Sensor Open
08- Solar Load Sensor Short
09-Low Freon
10-UART Failure
Press the Ext. Temp. button.
While pressing the Ext. Temp Button, press the Auto Fan button and then release it. Then release the Ext. Temp. button.
a -00 should appear. - indicating what Mode is displayed.
Mode 1 is Program number
Mode 2 is in vehicle thermistor
Mode 3 Ambient correction
Mode 4 Blower number
Mode 5 Outside thermistor
Mode 6 Feed back pot position
Mode 7 Calculated door position
Mode 8 System faults
Mode 9 Ratiometric feedback position
Mode 10 Full hot position
Mode 11 Full code position
Mode 12 Software version
To change Mode # press the Warm button.
To see the value in that Mode # press the Cool button.
A system fault is indicated by a flashing indicator. If there is a problem with the ambient sensor, in
vehicle sensor, or the feedback potentiometer, the Ext. Temp. indicator will flash for about 60 seconds,
upon ignition ON. The flashing indicator will reoccur upon ignition ON until the system problem has been corrected.
If you disconnect the battery and reconnect it, the system will recalibrate and move the door from one extreme to the other and then position the door and stop. The blower motor also comes on and you can manually turn it off. Takes about 30 seconds.
To enter the diagnostic mode, push and hold the fan up and down arrows at the same time for about 5 seconds.
The display should show "-00".
Push "Auto" and the display will show any fault codes that are stored in the computer.
00-Not used
01-Temp. Door Motor Circuit Fault
02-Temp Door Motor Circuit Fault
03- Ambient Sensor Open
04- Ambient Sensor Short
05- In-Car Temp Sensor Open
06- In-Car Temp Sensor Short
07- Solar Load Sensor Open
08- Solar Load Sensor Short
09-Low Freon
10-UART Failure
