Ford Expedition 2000 Workshop Manual page 11

2000 Expedition/Navigator Workshop Manual
A16 CHECK THE WIPER RUN/PARK RELAY FOR CORRECT OPERATION
A17 CHECK CIRCUIT 646 (Y/W) FOR A SHORT TO POWER
Wiper Run/Park Relay
GEM C239
A18 CHECK THE WIPER RUN/PARK RELAY SWITCH CIRCUIT
Wiper HI/LO Relay
http://www.fordtechservice.dealerconnection.com/pubs/content/~WSYJ/~MUS~LEN/20...
Check the wiper run/park relay; refer to Wiring Diagrams, Cell 149, Component Test.
Is the windshield wiper run/park relay OK?
Yes
REPLACE the GEM; REFER to Section 419-10. CLEAR the DTCs. TEST the system for
normal operation.
No
GO to A17.
Measure the voltage between wiper run/park relay connector Pin 2, Circuit 646 (Y/W) and
ground.
Is any voltage indicated?
Yes
REPAIR Circuit 646 (Y/W). CLEAR the DTCs. TEST the system for normal operation.
No
REPLACE the wiper run/park relay. CLEAR the DTCs. TEST the system for normal operation.
Set the active command mode WIPER RLY to ON.
Measure the voltage between wiper HI/LO relay connector Pin 3, Circuit 63 (R) and ground.
Page 11 of 55
8/4/2010