AIR CONDITIONING – Lexus SC 300 1999 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 2) for Lexus SC 300 1999

List of elements for Automatic A/C Wiring Diagram (1 of 2) for Lexus SC 300 1999:

• (console box wire harness, upper center of dash) i31
• (front side of right fender) g101
• (sc 300)
• (sc 400)
• A/c control assembly
• A/c dual pressure switch (sc 300) (at right side of engine compartment, near strut tower) (sc 400) (at right side of engine compartment, integral to a/c triple pressure switch)
• A/c in
• A/c solar sensor (at upper right side of dash)
• A10
• A11
• A12
• A13
• A14
• A15
• Acc
• Air inlet control servo motor (behind right side of dash)
• Air mix control servo motor (behind right side of dash)
• Air vent mode control servo motor (behind center of dash)
• Amout
• B10
• B11
• Blw
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• C17
• C18
• C19
• C20
• C21
• C22
• C23
• C24
• C25
• C3 lock in
• Cfan
• Cool
• Def
• Defogger system
• E18
• Face
• G203 (right kick panel)
• Hot
• I36 (a/c sub wire harness)
• Ig+
• Ign
• Igniter (on left side of left strut tower)
• Instrument cluster system
• Interior lights system (rheostat)
• J/b 1 (behind left kick panel)
• J/b 3 (behind center of dash)
• Kick panel) g200
• Mdef
• Mface
• Mfrs
• Mgc
• Mrec
• Pnk
• Rdfgr
• Recirc
• Red
• Reost
• Saut
• Sc 300 only
• Sc 400 only
• Set1
• Set2
• Set3
• Set4
• Set5
• Spd
• Tach
• Tail
• Tam
• Tel
• Tel in
• Telephone transceiver & speaker relay (at left rear corner of luggage compartment)
• Tpi
• Tpm
• Ver

Automatic A/C Wiring Diagram (2 of 2) for Lexus SC 300 1999

List of elements for Automatic A/C Wiring Diagram (2 of 2) for Lexus SC 300 1999:

• (behind right side of dash) short connector
• (console box wire harness, behind center of dash) i32
• (engine room main wire harness, left front side of engine compartment)
• (engine wire harness, above glove box) i25
• (engine wire harness, center of firewall) (sc 400) e28
• (engine wire harness, left side of engine) (sc 300) e20
• (front side of left fender) g100
• (partial) (at left rear side of engine)
• A/c
• A/c ambient temperature sensor (at right front of engine compartment, forward of radiator)
• A/c control switch & radio switch
• A/c evaporator temp. sensor (behind right side of dash)
• A/c lock sensor (left front of engine)
• A/c magnetic clutch (on a/c compressor)
• A/c room temperature sensor (behind center of dash)
• A/c single pressure switch (sc 400) (at right side of engine compartment, integral to a/c triple pressure switch)
• A6 j/b 3 (behind center of dash) b3
• Acmg
• Auto
• Blower motor (behind right side of dash)
• Blower motor control relay (behind right side of dash)
• Cig fuse 15a
• Cool
• Cooling fan ecu (sc 400) (behind right side of dash)
• D13
• D14
• D25
• Data link connector 1 (dlc)
• Def relay
• Dome fuse 10a
• E18
• Ecu-ig fuse 15a
• Engine control module (behind lower right side of dash)
• Engine coolant temperature sensor (a/c system) (behind upper right side of dash)
• Engine coolant temperature sensor (cooling fan) (sc 400) (at left front of engine compartment, near radiator)
• G101 (front side of right fender)
• G202 (left dash brace)
• Gnd
• Hot at all times
• Hot in acc or on
• Hot in on or start
• Hot w/light switch in tail or head
• Htr fuse 10a
• Htr fuse 60a
• Htr relay
• I21 (cowl wire harness, behind right side of dash)
• I25
• I36 (a/c sub wire har- ness)
• I36 (a/c sub wire harness)
• Idl
• Igb
• Instrument cluster system
• J/b 1 (behind left kick panel)
• Mg clt relay
• Panel fuse 7.5a
• Pnk
• R/b 2 (on left side of engine compartment, behind battery)
• Radio temp control switch
• Red
• Sc 300
• Sc 400
• Sol+
• Sol-
• Solenoid valve (cooling fan) (sc 400) (at left front of engine)
• Tac
• Th+
• Th-
• Vsv (water valve) (on right side of firewall)