All values measured to ground unless otherwise noted
Conn./Plug/Pin Pin Information Test Value Comments
A37/4,
A37/5		      
A.2 SN2 processed unlocking signal output,
to CF system		 Initialize and hold locking command
measure to circuit 30 pin 2 12 VDC		 activation with key
or IR transmitter Note 1
A.3 SN1 processed locking signal output,
to CF system		 Initialize and hold unlocking command
measure to circuit 30 pin 2 12 VDC		 activation with key
or IR transmitter
Note 1
B.1 Circuit 15 main power input Ignition on 12 VDC Feed from F1f24
B.2 REST function recognition signal input Ignition off, engine coolant temp > 50 ° C,
disconnect transparent line at PSE module,
press REST on N22 12 VDC, PSE will turn on		  
C.1 Unlock command driver/passenger side / trunk signal input Disconnect A37 plugs,
in rest position > 20 kOhms
in unlock mode <40 Ohms		 Initialized from
S86/1, S87/1 and S88/2
C.2 Main ground to W7 Approx. 0 Ohms to ground  
C.3 Lock command driver/passenger side / trunk signal input Disconnect A37 plugs,
in rest position > 20 kOhms
in unlock mode <60 Ohms		 Initialized from
S86/1, S87/1 and S88/2
C.4 Interior dome lamp activation signal output Lock vehicle < 1 VDC, E15 will not be lit
Unlock vehicle > 12 VDC, E15 will be lit		  
C.5 Rear door contact switch signal input All rear doors closed 12 VDC
any rear door open < 1 VDC		  
C.6 Interior CL signal input from S85/1 "unlock" position 12 VDC
"lock" position < 1VDC		  
C.7 Immobilization signal output,
prevents start lock-out if a legal unlock procedure is not recognized		 Vehicle unlocked 12 VDC
open left front window and lock vehicle
ignition on < 1 VDC		 valid as of 12/93
C.8 Circuit 30 main power input,
supplies PSE pump		 12 VDC at all times Feed from F1f27 via Z7/1
Note For further tests, especially pneumatic system, refer to DM Body and Accessories Vol 1 sect. 3    
Note 1 SN1 lock signal will cause to close windows and/or sliding/pop-up roof if open SN2 unlock signal will cause to open windows and/or sliding/pop-up roof with delay of approx. 2-4 sec. (immediately if not have been closed completely before, but only within 15 sec. of a closing operation)