All values measured to ground unless otherwise noted
Conn./Plug/Pin Pin Information Test Value Comments
A37      
A.1 LF VSS input, generated by L6/1, processed in ECM and sent to other ECMs Ignition on, lift front of vehicle.
Turn left front wheel > 1 rev/sec by hand > 3 VAC or with vehicle moving
20 mph / 200 Hz
35 mph / 330 Hz
square wave
A.2 RTR control signal output Press and hold S15
12 VDC while PSE pump is running
Note 1
A.3 RTR signal input, to activate RTR control valve Measure to circuit 30, pin 7
press and hold S15 12 VDC
release S15 < 1VDC
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 Pin not used    
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