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Roadster · 02-14-2017

This is what I found, and you may also found the same....

From the FSM....
"The computerized HVAC programmer receives input from several on-vehicle sensors, the CCM, also temperature and mode requests from the HVAC control head."
"The information input to the HVAC programmer is processed and used to control the electronic automatic HVAC system.
Three sensors, specific to the electronic automatic HVAC system provide input to the HVAC programmer."

1-OUTSIDE AIR (AMBIENT) TEMPERATURE SENSOR
2-INSIDE AIR TEMPERATURE SENSOR
3-SUN LOAD SENSOR

I could not find any info on a non-functioning LCD display with or without the 3 dashes (---).
Could it be that one of the sensors or the CCM is defective, therefore causing you not to get the reading on the LCD and thus the system not operating properly???
Thinking logically, the sensors mentioned and or the CCM may need to be checked out for proper operation...

02-14-2017	#7
Roadster Join Date: Mar 2014 Location: Warrington PA Posts: 1,914	Re: Zr1 - different C68 programmer This is what I found, and you may also found the same.... From the FSM.... "The computerized HVAC programmer receives input from several on-vehicle sensors, the CCM, also temperature and mode requests from the HVAC control head." "The information input to the HVAC programmer is processed and used to control the electronic automatic HVAC system. Three sensors, specific to the electronic automatic HVAC system provide input to the HVAC programmer." 1-OUTSIDE AIR (AMBIENT) TEMPERATURE SENSOR 2-INSIDE AIR TEMPERATURE SENSOR 3-SUN LOAD SENSOR I could not find any info on a non-functioning LCD display with or without the 3 dashes (---). Could it be that one of the sensors or the CCM is defective, therefore causing you not to get the reading on the LCD and thus the system not operating properly??? Thinking logically, the sensors mentioned and or the CCM may need to be checked out for proper operation... __________________ Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1974 L-82 355 Vert. 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member Last edited by Roadster; 02-14-2017 at 11:16 AM.