Not sure why, but none of the 8D adx files (the ones on Tunerpro.net, or the SAUJP) have a parameter that shows "A/C requested". It has "A/C clutch engaged" (when the ECM detects the 12V applied to the clutch), but not whether the ECM is getting the initial signal from the dash switch for the A/C.

Basically I want to hook up my Classic Auto Air system to the ECM so I can have the A/C clutch controlled by the ECM. Basically what Tim C did.

https://www.thirdgen.org/forums/diy-prom/792545-c-clutch-disable-s_aujpv5.html

Theoretically I can do it without seeing that parameter, but it'd be nice to see the ECM report whether its seeing the signal from dash switch.

From Tim C's thread, it looks like I need to get TP to see tied to 0x0031 b7 where 1=A/C clutch ON.

 

Disregard. I was able to get it to work w/o having to see the A/C signal request.

 

Sorry I'm late to the party...
First Look at the ANHT hac and search for "Serial", this area will be your 6th hit.
This is the ALDL data feed list.

From there scoll down until you see what you want to log that isn't defined. In this case $0031 bit 7

Note the number circled. SUBTRACT 1 FROM IT. This is the packet offset to be entered in the new ADX aquisition bitmask definition.

Enter the number (56-1 = 55) in the integer side of the packet offset. Fill out the rest as it is here OR as needed for any other parameter you find.
Look at other definitions above and below it for any simple help.
Under Operand at the bottom:
Bit 0 = 01
Bit 1 = 02
Bit 2 = 04
Bit 3 = 08
Bit 4 = 10
Bit 5 = 20
Bit 6 = 40
Bit 7 = 80

 

Sweet! Thanks Vanilla... I'll give this a shot.