Hyundai Genesis Coupe Auto Lights Wiring Diagram SD951-1 - BCM & Light Switch
Wiring diagram of the automatic headlight system showing the light sensor, BCM, multifunction switch and head lamp circuits.
This document is page SD951-1, "Auto Lights (1)," an automotive wiring diagram covering the automatic headlight (auto light) system. It shows the circuit from the Smart Junction Box (hot in ON or START, through the MODULE2 7.5A fuse and IPS Control Module) to the BCM, Auto Light & Photo Sensor, Multi-Function Switch (containing the Dimmer/Passing switch with LOW/HIGH/PASS positions and the Light Switch with HEAD/TAIL/AUTO/OFF positions), the Auto Head Lamp Leveling Device Unit, and the Instrument Cluster high-beam indicator with its LED drive IC, MICOM, and B-CAN transceiver. Connector identifiers include M02-A/B/C (BCM), M52 (auto light sensor), M48-L (multi-function switch), MF11, F06, M11 (instrument cluster), I/P-C, I/P-D, JM01 and JM04 joint connectors, and ground point GM02. Wire gauges and colors are labeled (e.g., 0.22Br, 0.22L, 0.22W, 0.3L, 0.3R, 0.3Gr, 0.3P, 0.3B, 1.25B), and B-CAN Low/High communication lines are routed through joint connector JM04 to data link details (SD200-3). Cross-references point to power distribution (SD110-8/9), passenger compartment fuse details (SD120-4), ground distribution (SD130-2), and photo pages 49, 51, 52, 54, 56, 63, 95, 112, 113, 115. A 0.3R wire is noted for HID-equipped vehicles.
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Frequently asked questions
- What fuse powers the auto lights circuit in this diagram?
- The circuit is powered through the MODULE2 7.5A fuse in the Smart Junction Box, on a circuit that is hot in ON or START.
- What connector is the multi-function switch on for the auto light circuit?
- The dimmer/passing switch and light switch portions of the multi-function switch use connector M48-L (pins 10, 9, 3, 4, and 2), plus pin 21 of connector MF11 for the head lamp low 'ON' signal.
- What positions does the light switch have?
- The light switch shows HEAD, TAIL, AUTO, and OFF positions; the dimmer/passing switch shows LOW, HIGH, and PASS.
- How is the auto light sensor wired to the BCM?
- The auto light & photo sensor (connector M52, pins 7, 8, 6) connects to the BCM: Power on pin 8 (0.22Br), Signal on pin 9 (0.22L), and Ground on pin 20 (0.22W).
- Where does the ground for the dimmer/passing switch go?
- From pin 2 of M48-L via a 0.3B wire to joint connector JM01 (see Ground Distribution SD130-2), then via a 1.25B wire to ground point GM02.
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