All values measured to ground unless otherwise noted
Conn./Plug/Pin Pin Information Test Value Comments
F1f15 Circuit 58 "lights on" signal,
main power supply for HCS system
Exterior lights on 12 VDC  
S4      
x1.10 Washer signal output, activates HCS relay
also initializes windshield washer system
Ignition on, press and hold S4s4 past
resistance point 12 VDC
 
x1.11 Circuit 15R power input Ignition on 12 VDC  
K2      
1 Circuit 58 "lights on" signal input,
main power input for HCS system
Exterior lights on 12 VDC same as F1f15
2 Main ground to W16/3, grounds hot side of wiper motors when system not activated Approx. 0 Ohms to ground same as pin 5
3 Washer motor power output,
supplies wiper/washer motors
Exterior lights on, press and hold S4s4 past resistance point 12 VDC starts wiper and washer motors
4 Relay coil high side input, energizes relay and activates HCS wiper/washer function Exterior lights on, press and hold S4s4 past resistance point 12 VDC  
5 Relay coil main ground to W16/3 Approx. 0 Ohms to ground same as pin 2