Power Circuits

Turn ignition switch to OFF position. Ensure compuvalve 64-pin connector is disconnected. Turn ignition switch to ON position. Check for battery voltage between chassis ground and compuvalve VPWR terminals No. 2, 11 and 13 on F150 Pickup(5.4L), or terminals No. 2, 9, 11 and 13 on Econoline and F350 Super Duty Pickup (6.8L). If battery voltage is not present, power is not being supplied from bi-fuel relay module. Repair open in affected circuit or bi-fuel relay module as necessary. See appropriate wiring diagram in WIRING DIAGRAMS article.