Engine Compartment Junction & Relay Blocks
WARNING: This page is about a different car, the 2002 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
For locations of engine compartment junction, relay and fusible link blocks, see Fig 1. For description of electrical power distribution, see Fig 2.
- Engine compartment fusible link block is located at left of engine compartment. See Fig 1. For identification of components, see Fig 3. For identification of protected circuits, see table below. For wiring diagrams of fusible link block circuits, see POWER DISTRIBUTION in SYSTEM WIRING DIAGRAMS article.
- Engine compartment junction block is located at left of engine compartment. See Fig 1. For identification of junction block relays and fuses, see Fig 4. For identification of protected circuits, see table below. For wiring diagrams of engine compartment junction block circuits, see POWER DISTRIBUTION in SYSTEM WIRING DIAGRAMS article.
- Engine compartment relay block No. 2 is located at left of engine compartment. See Fig 1. For identification of relays and fuses, see Fig 5. For identification of protected circuits, see table below. For wiring diagrams of relay block No. 2 circuits, see appropriate diagram in SYSTEM WIRING DIAGRAMS article.
FUSIBLE LINK BLOCK FUSE IDENTIFICATION LEGEND
| Fuse | System | |
|---|---|---|
| 25A | CDS FAN | Air Conditioning (Dual A/C) Air Conditioning (Single A/C) |
| 30A | RR HEATER | Air Conditioning (Dual A/C) |
| 40A | DEFOG | Rear Window Defogger and Mirror Heater |
| 40A | HEATER | Air Conditioning (Dual A/C) Air Conditioning (Single A/C) |
| 60A | ABS | VSC |
| 120A | ALT | Automatic Light Control Charging Cigarette Lighter and Power Outlet Door Lock Control and Theft Deterrent Illumination Light Auto Turn Off Multiplex Communication System Power Window Taillight Wireless Door Lock Control |
ENGINE COMPARTMENT JUNCTION BLOCK RELAY IDENTIFICATION
| RELAY DESCRIPTION |
|---|
| Defog Relay |
| Fuel Pump Relay |
| EFI Relay |
| Head Relay |
| C/OPN Relay |
| Horn Relay |
ENGINE COMPARTMENT JUNCTION BLOCK FUSE IDENTIFICATION LEGEND
| Fuse | System | |
|---|---|---|
| 7.5A | ALT-S | Charging |
| 7.5A | ECU-B | Automatic Light Control Combination Meter Door Lock Control and Theft Deterrent Interior Light Key Reminder and Seat Belt Warning Light Auto Turn Off Multiplex Communication System Power Window Rear Wiper and Washer Wireless Door Lock Control |
| 10A | DOME | Auto Antenna Interior Light Key Reminder and Seat Belt Warning Multiplex Communication System |
| 10A | EFI NO.2 | Engine Control |
| 10A | HORN | Door Lock Control and Theft Deterrent Horn Multiplex Communication System |
| 15A | DRL | Headlight (w/ Daytime Running Light) |
| 15A | ECTS | Cruise Control Engine Control |
| 15A | H-LP LH | Fog Light (w/o Daytime Running Light) Headlight (w/o Daytime Running Light) |
| 15A | H-LP RH | Fog Light (w/o Daytime Running Light) Headlight (w/o Daytime Running Light) |
| 15A | MIR HTR | Rear Window Defogger and Mirror Heater |
| 20A | EFI NO.1 | Cruise Control Electronically Controlled Transmission and A/T Indicator Engine Control Engine Immobiliser System |
| 20A | RAD NO.1 | Radio and Player (10 Speaker) Radio and Player (6 Speaker) |
| 20A | RAD NO.3 | Radio and Player (10 Speaker) |
| 20A | TURN-HAZ | Trailer Towing Turn Signal and Hazard Warning Light |
| 30A | AM2 | Engine Control Ignition Starting |
| 30A | DOOR NO.2 | Door Lock Control and Theft Deterrent Multiplex Communication System Power Window Wireless Door Lock Control |
| 30A | TOWING | Trailer Towing |
| 40A | MAIN | Automatic Light Control Door Lock Control and Theft Deterrent Headlight (w/ Daytime Running Light) Headlight (w/o Daytime Running Light) Light Auto Turn Off |
ENGINE COMPARTMENT RELAY BLOCK NO. 2 RELAY IDENTIFICATION
| RELAY DESCRIPTION |
|---|
| RR Heater Relay |
| MG CLT Relay |
| CDS Fan Relay |
| Dimmer Relay |
| Heater Relay |
| DRL No.4 Relay |
| ST Relay |
ENGINE COMPARTMENT RELAY BLOCK NO. 2 FUSE IDENTIFICATION LEGEND
| Fuse | System | |
|---|---|---|
| 7.5A | STA | Electronically Controlled Transmission and A/T Indicator Engine Control Starting |
| 10A | H-LP LH | Headlight (w/ Daytime Running Light) Multiplex Communication System |
| 10A | H-LP LL | Fog Light (w/ Daytime Running Light) Headlight (w/ Daytime Running Light) Multiplex Communication System |
| 10A | H-LP RH | Headlight (w/ Daytime Running Light) Multiplex Communication System |
| 10A | H-LP RL | Headlight (w/ Daytime Running Light) Multiplex Communication System |