All values measured to ground unless otherwise noted
Conn./Plug/Pin Pin Information Test Value Comments
N16/1      
1 Circuit 30 main power input 12 VDC at all times Feed from X4/10
5,6,7 pins not used    
8,9 Circuit 87 ASR, switched power output, supplies traction system and diagnostic conn. Ignition on 12 VDC Feed from fuse f1
10.11,12 pins not used    
13 TNA signal output, short protected Engine at idle > 3 VAC  
14 RF VSS signal input, affects kickdown, rpm increase and A/C compressor function Ignition on, lift front of vehicle.
Turn right front wheel > 1 rev/sec by hand > 3 VAC or with vehicle moving		  
15 Circuit 15 fused power input Ignition on 12 VDC  
16,17 pins not used    
18 TN signal input from EDS system Engine at idle > 3 VAC Feed from N39
19 Circuit 87 power output, supplies module box blower motor Engine at > 1500 rpm 12 VDC blower is running. Also temperature controlled
ON at 55°C OFF at 60°C		 System phased out
as of MY 94
 
20
21		 A/C compressor rpm sensor
signal input high side
signal input low side		 Disconnect ECM measure across pin 20 and 21
approx. 185 Ohms or
engine at idle > 0.04 VAC		 Voltage and
frequency increases
when rpm raises
22,26 pin not used    
27 Circuit 87 fused power output, supplies several subsystems Ignition on 12 VDC Feed from fuse f3
28,29 Main ground to W15 Approx. 0 Ohms to ground or
measure to circuit 30 12 VDC		  
30,31,32 pins not used    
33 DTC diagnostic output. Also input for HHT data and tests Ignition on 12 VDC approx. 8 VAC when data transmission active.  
34 Circuit 15 main power input Ignition on 12 VDC  
35 pin not used    
36 Kickdown enable power output, supplies S16/7 depending on engine rpm and speed signal Engine at idle 12 VDC
Engine off < 1 VDC		  
37 pin not used    
38 Circuit 87 EDS fused power output, supplies motor management components Ignition on 12 VDC Feed from fuse f2
39 Full load cut off signal input, disables A/C and ARF systems Ignition on, acceleration pedal position:
CTP approx. 12 VDC
WOT approx. 0 VDC 		 
40 A/C on recognition switched ground signal input, controls A/C compressor activation Engine at idle, measure to circuit 30
defrost on 12 VDC defrost off < 2 VDC		  
41 Circuit 87 switched power output, activates A/C compressor Engine at idle, defrost on 12 VDC
defrost off 0 VDC		  
2,3,4,23,
24,25		 pins not provided in connector