A/C relay location

Tiny
BHUSHAH
  • MEMBER
  • 1999 LEXUS LS 400
  • 3.4L
  • V8
  • RWD
  • AUTOMATIC
  • 146,000 MILES
Need to replace A/C fan relay. Which is the A/C relay?
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Thursday, June 1st, 2017 AT 5:57 PM

1 Reply

Tiny
KEN
  • ADMIN
Hello,

I have found the wiring and fuse/relay diagrams (BELOW) for you so you can do some testing by following these guides.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

1 - TURN 10 Amp Turn Signal Lights
2 - WIPER 20 Amp Windshield Wipers And Washer
3 - HEATER 10 Amp Air Conditioning System, Rear Window Defogger, Multiport Fuel Injection System/Sequential Multiport Fuel Injection System
4 - FR FOG 15 Amp Fog Lights
5 - ECU-IG 15 Amp Power Steering Control System, Charging System, Vehicle Skid Control System
6 - PWR-IG 15 Amp Automatic Headlight Leveling System, Moon Roof, Headlight Cleaner, Power Seat Switch, Tilt & Telescopic Steering, Shift Lock System
7 - GAUGE 10 Amp Gauges & Meters, Service Reminder Indicators & Warning Buzzers, Back-Up Lights, Vehicle Skid Control System, Multiport Fuel Injection System/Sequential Multiport Fuel Injection System, Automatic Transmission System
8 - IGN 10 Amp SRS, Multiport Fuel Injection System/Sequential Multiport Fuel Injection System
9 - RR FOG 7.5 Amp No Circuit
10 - FUEL OPN 10 Amp Fuel Opener System
11 - RR CIG 15 Amp Rear Cigarette Lighter, Power Outlet
12 - FR CIG 15 Amp Front Cigarette Lighter, SRS
13 - A/C 7.5 Amp Air Conditioning System
14 - P RR DOOR 20 Amp Rear Door Lock, Rear Power Window
15 - STOP LP 25 Amp Stop Lights, High Mounted Stop Light
16 - RADIO NO.2 15 Amp Audio System, Outside Rear View Mirror, Shift Lock System, Air Conditioning System
17 - PANEL 7.5 Amp Instrument Panel Lights, Air Conditioning System
18 - STARTER 7.5 Amp Starting System, Automatic Transmission System, Multiport Fuel Injection System/Sequential Fuel Injection System
19 - TAIL 7.5 Amp Tail Lights, Side Marker Lights, License Plate Lights
20 - STOP-S 7.5 Amp Shift Lock System, Height Control System, Anti-Lock Brake System, Vehicle Skid Control System
21 - RR S/HTR 15 Amp No Circuit
22 - WASHER 20 Amp Windshield Washer
23 - AIR SUS 20 Amp Height Control System
24 - D RR DOOR 20 Amp Rear Door Lock, Rear Power Window
25 - HORN 10 Amp Horns
26 - ETCS 15 Amp Electronic Throttle Control System
27 - H-LP L UPR 10 Amp Left Hand Headlight (High Beam)
28 - H-LP R UPR 10 Amp Right Hand Headlight (High Beam)
29 - EFI NO.2 10 Amp Emmission Control System
30 - MIR-HTR 15 Amp Outside Rear View Mirror Defogger
31 - FR S/HTR 15 Amp Seat Heater
32 - ALT-S 7.5 Amp Charging System
33 - TEL 15 Amp Telephone
34 - CRT 15 Amp Multi Information Display
35 - RADIO NO.1 20 Amp Audio System
36 - MPX-B 10 Amp Power Window, Door Lock, Tilt & Telescopic Steering
37 - ECU-B 7.5 Amp Vehicle Skid Control System, Daytime Running Light System
38 - HAZ 10 Amp Emergency Flashers
39 - EFI NO.1 20 Amp Multiport Fuel Injection System/Sequential Multiport Fuel Injection System
40 - DOME 10 Amp Interior Lights, Vanity Lights, Fog Lights, Rear Personal Light, Garage Door Opener
41 - OBD 7.5 Amp On-Board Diagnosis System
42 - DRL 10 Amp Daytime Running Lights System (Canada Vehicles)
43 - H-LP R LWR 15 Amp Left Hand Headlight (Low Beam)
44 - H-LP L LWR 15 Amp Left Hand Headlight (Low Beam)

Please run some tests and get back to us so we can continue helping you.

Cheers, Ken
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Monday, June 5th, 2017 AT 12:39 PM

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