Test D: One High Beam Headlamp Is Inoperative
PINPOINT TEST D: ONE HIGH BEAM HEADLAMP IS INOPERATIVENormal Operation
When the smart junction box (SJB) detects the headlamp switch in the HEADLAMPS ON position and the multifunction switch in the HIGH BEAM position, the SJB energizes an internal relay which routes voltage through circuit CLS08 (VT/GN) to the high beam headlamps. Ground is supplied on circuits GD121 (BK/YE) and GD123 (BK/GY) for the LH and RH high beam headlamps, respectively.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Headlamp assembly