HEADLIGHTS – Lexus IS 300 2003 – SYSTEM WIRING DIAGRAMS

HEADLIGHTS

Headlamps Wiring Diagram (1 of 2) for Lexus IS 300 2003

List of elements for Headlamps Wiring Diagram (1 of 2) for Lexus IS 300 2003:

• +b1
• Acc
• Anti-theft system
• Auto
• Automatic light control sensor (on top left side of dash)
• B10
• Becu
• Bl (at left rear quarterpanel)
• Bn (at right upper side of back panel)
• Body ecu (behind lower left end of dash, integral with driver side j/b)
• Bsub
• Cltb
• Clte
• Clts
• Combination switch
• Computer data lines system
• Dcty
• Dimmer switch
• Diode (fog light)
• Door fuse 20a
• Driver side j/b (behind lower left end of dash)
• Ecu-b2 fuse 7.5a
• Exterior lights system
• Flash
• Foglight switch
• Head
• High
• Hot at all times
• Hot in acc or run
• Hot w/ tail relay energized
• Ill+
• Junction connector 12 (sedan) (above left rear fenderwell) junction connector 18 (wagon) (in rear of liftgate)
• Junction connector 15 (behind left fenderwell)
• Junction connector 5 (behind left end of dash, above driver side j/b)
• Left rear fog light (left rear combination light)
• Lgcy
• Light control switch
• Low
• Lsr
• Lswp
• Mpx-b fuse 10a
• Mpx1
• Mpx2
• Mpx3
• Obd2
• Off
• Panel fuse 7.5a
• Passenger side j/b (behind lower right end of dash)
• Pcty
• Radio 2 fuse 10a
• Rcty
• Rear fog light switch
• Red
• Right rear fog light (right rear combination light)
• Sedan
• Solid state
• Tail
• Theft deterrent ecu (behind left end of dash)
• W/ rear fog light
• W/o rear fog light
• Wagon

Headlamps Wiring Diagram (2 of 2) for Lexus IS 300 2003

List of elements for Headlamps Wiring Diagram (2 of 2) for Lexus IS 300 2003:

• (on right rear of engine compartment) engine room 1 r/b
• C10
• Chg-
• Combination meter
• Daytime running light relay 3 & 4 (on right front of engine compt, beside air box)
• Daytime running light resistor (on right side of engine compt, on strut tower)
• Dimmer relay
• Driver side j/b (behind lower left end of dash)
• Drl
• Drl 1 fuse 7.5a
• Drl 2 fuse 30a
• E1 (in engine harness, at right front of engine compt)
• Ec (at left fender apron)
• Ecu-b2 fuse 7.5a
• Ecu-ig fuse 10a
• Engine room 1 r/b (on right rear of engine compartment)
• Engine room 2 r/b (on right rear of engine compartment)
• Engine room 3 r/b (on left side of engine compartment)
• Fr fog fuse 15a
• Fr fog relay
• H-lp l lwr fuse 15a
• H-lp l upr fuse 10a
• H-lp r lwr fuse 15a
• H-lp r upr fuse 10a
• Head lp relay
• Hi beam indicator
• Hot at all times
• Hot in on or start
• I5 (in dash harness, behind right side of dash)
• Ih (at right side of firewall)
• Ind
• Junction connector 6 (behind left side of dash, forward of instrument cluster)
• Junction connector 7 (behind upper right side of dash)
• Left front fog light
• Left headlight control ecu (behind left headlight assembly)
• Left high beam headlight
• Main daytime running light relay (behind left end of dash)
• Main fuse 40a
• Parking brake switch (at base of parking lever)
• Passenger side j/b (behind lower right end of dash)
• Pkb
• Red
• Right front fog light
• Right headlight control ecu (behind right headlight assembly)
• Right high beam headlight

Headlamps Leveling Wiring Diagram for Lexus IS 300 2003

List of elements for Headlamps Leveling Wiring Diagram for Lexus IS 300 2003:

• A11
• Above driver side j/b)
• Anti-lock brakes system
• Auto
• Combination meter
• Combination switch
• Dimmer switch
• Diode (fog light)
• Driver side j/b (behind lower left end of dash)
• Ecu-ig fuse 10a
• Engine room 1 r/b (on right rear of engine compt)
• Flash
• Gauge fuse 10a
• H10
• Head
• Head lp relay
• Headlight beam level control ecu (behind left end of dash)
• Headlight beam level control warning light
• High
• Hot at all times
• Hot in on or start
• I10
• Ih (at right side of firewall)
• Junction connector 5 (behind left end of dash, a
• Junction connector 7 (behind upper right side of dash)
• Left front height control sensor (on left front of engine compt)
• Left headlight beam level control actuator (behind left headlight)
• Left rear height control sensor (under left rear of vehicle, attached to suspension control arm)
• Lh+
• Lh-
• Lh1 (s1)
• Lh2 (s2)
• Lh3 (s3)
• Lh4 (s4)
• Lhe
• Lht
• Light control switch
• Low
• Main fuse 40a
• Mlcom (b1)
• Mrcom (b1)
• Off
• Passenger side j/b (behind lower right end of dash)
• Red
• Rh+
• Rh-
• Rh1 (s1)
• Rh2 (s2)
• Rh3 (s3)
• Rh4 (s4)
• Rhe
• Rht
• Right headlight beam level control actuator (behind right headlight)
• Sbf
• Sbr
• Sgf
• Sgr
• Shb
• Shfl
• Shg
• Shrl
• Spdr
• Tail
• Theft deterrent ecu (behind left end of dash)
• Wng