Test B: One Low Beam Headlamp Is Inoperative

PINPOINT TEST B: ONE LOW BEAM HEADLAMP IS INOPERATIVE

Normal Operation
When the smart junction box (SJB) detects the headlamp switch in the HEADLAMPS ON position and the multifunction switch in the LOW BEAM position, the SJB provides voltage through circuits CLF04 (BN/BU) and CLF05 (BU/GN) to the LH and RH low beam headlamps, respectively. Ground is supplied on circuit GD123 (BK/GY) for RH headlamp. Ground for the LH headlamp is routed through a joint connector through circuit GD120 (BK/GN).







This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Joint connector
- Headlamp assembly (MKX)
- SJB

B1-B2:

B3-B4:

B5-B7:

B8-B9: