Headlight wiring diagrams please?

PIZZLED

MEMBER
2015 FORD RANGER
2.2L
TURBO
4WD
MANUAL
85,000 MILES

The H4 Low beam drivers side light only sends 7v through cable. The high beam on both sides and the low beam on passenger are working correctly. I can’t see a grounding problem as I have traced through. I have changed bulbs with new and switched to both sides. All fuses are fine but I can’t locate the relay if there is one to control the headlights. I’ve used the Forscan software to try and reset the BCM but that also does not work. I have read that the BCM has a circuit protection for the low beam that might have closed but have no idea if this can be reset. Truck is a Ford ranger limited t6 2015 pre facelift 2.2 UK version.

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
47,643 POSTS

Hello,

It sounds like the SJB (smart junction box) is out which is common. here is the headlight wiring diagrams so you can see how the system works nad which wires to test with a guide to test the wiring with how to replace the SJB (BCM) int he diagrams below:

https://www.2carpros.com/articles/how-to-check-wiring

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

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