This might help. Probe socket 7 for A/C codes (listed at the bottom of the page). The top of the page shows which systems register fault codes at which sockets of the diagnostic plug located in front of the battery. No ABS fault codes in these years.

Attached Files

W124 8-Pin Connector Faults.pdf (50.9 KB, 627 views)

__________________
1988 California version 260E (W124)
Anthracite Grey/Palomino
Owned since new and still going strong and smooth
MBCA member

Past Mercedes-Benz:
1986 190E Baby Benz
1967 230 Inherited from mom when she downsized
1959 220S Introduced me to the joys of keepin' 'em goin'

There are only 10 kinds of people in the world--those who understand binary and those who don't