Toyota Ist was designed as a compact car with a spacious trunk and sporty interior layout. Built on the NBC multi-platform, this vehicle is closely related to models such as the bB, Platz, and Vitz. As is common practice among Japanese automakers, it was initially produced for the domestic market before being exported globally under the xA and Scion xA badges. In this article, we cover the fuse box diagrams for the first-generation Toyota Ist / Scion xA (chassis code NCP60; NBC platform) for the 2002, 2003, 2004, 2005, 2006, and 2007 model years.
Here you will find the locations and diagrams of the distribution boxes. The fuse for the “Cigarette Lighter” is highlighted in bold.
In the Engine Compartment
There are four boxes located here: the main and auxiliary fuse boxes near the battery, the fusible link block on the battery terminal, and the ABS relay box.
Component layout (Type 2).
Main Fuse Box
Overview.
| Diagram | ||
|---|---|---|
|
||
| No. | Circuit Protected | A |
| 1 | Clock, instrument cluster, double door lock, headlights, interior lights, warning buzzer, multi-information display, audio system, door lock control module (DOME) | 15 |
| 2 | Engine Control Module (ECM), engine immobilizer, Transmission Control Module (TCM) (EFI) | 15 |
| 3 | Horn | 15 |
| 4 | Charging system, instrument cluster, Engine Control Module (ECM), engine immobilizer, Transmission Control Module (TCM), multi-information display, SRS airbag system, ignition system (AM2) | 15 |
| 5 | Starting system (ST) | 30 |
| 6 | Not used | - |
| 7 | Left headlight, headlight leveling system (H-LP LH) | 10 |
| 8 | Right headlight, headlight leveling system (H-LP RH) | 10 |
| 9 | Power outlet (P/POINT) | 15 |
| 10 | Not used | - |
| 11 | Not used | - |
| 12 | Not used | - |
| 13 | Not used | - |
| 14 | Not used | - |
| 15 | Radiator cooling fan (RDI) | 30 |
| 16 | PTC auxiliary heater (PTC) | 50 |
| 17 | Not used | - |
| Relay Assignments | ||
| R1 | Radiator cooling fan | |
| R2 | ||
| R3 | Starter motor | |
| R4 | Not used | |
| R5 | Power outlet | |
| R6 | PTC auxiliary heater | |
| R7 | EFI main system | |
| R8 | A/C compressor clutch | |
| R9 | Horn | |
Fusible Links
Located on the battery.
| Diagram | ||
|---|---|---|
|
||
| No. | Circuit Protected | A |
| 1 | MAIN - Fuses: "EFI", "DOME", "HORN", "ST", "AM2", "H-LP LH", "H-LP RH", "H-LP LH (HI)", "H-LP RH (HI)", "H-LP LH (LO)", "H-LP RH (LO)" | 60 |
| 2 | Start & Stop system | 80 |
| 3 | Fuses: "ECU-B", "TAIL", "D/L", "OBD", "RDI", "AM1", "HAZ", "HTR", "HTR-SUB1", "POWER", "STOP", "DEF", charging system | 100/120 |
| 4 | ABS system | 60 |
Auxiliary Fuse Box
Diagram.
|
||
| R1 | Headlights | |
| R2 | Headlight dimmer (DIM) | |
| R3 | Not used | |
| 1 | Right headlight (high beam) / Daytime running lights (H-LP HI RH) | 10 |
| 2 | Instrument cluster, Left headlight (high beam) / Daytime running lights (H-LP HI LH) | 10 |
ABS Relay Box
Diagram.
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| 1 |
|
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| A |
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|
| B |
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| C |
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In the Passenger Compartment
The fuse box is located behind the cover panel beneath the steering column on the driver's side.
General view of the fuse box.
| Toyota Ist / Scion xA Passenger Compartment Fuse Box Diagram | ||
|---|---|---|
|
||
| No. | Circuit Protected | A |
| 1 | Gauges, ABS, air conditioning, reverse lights, charging system, instrument cluster, double door lock, door lock control module, Engine Control Module (ECM), Transmission Control Module (TCM), daytime running lights, warning buzzer, power sunroof, power windows, shift lock system, turn signal indicators, hazard warning system, climate control heater (GAUGE) | 10 |
| 2 | Rear window defogger and heated mirror relay (DEF RLY) | 10 |
| Rear window defogger and heated mirrors (DEF) | 20 | |
| 3 | Double door lock, door lock control module (D/L) | 25 |
| 4 | Front fog lights, headlights, headlight leveling, warning buzzer, rear fog lights, tail/parking lights (TAIL) | 10 |
| 5 | Not used | |
| 6 | Front and rear windshield wipers and washers, power door locks (WIPER) | 20 |
| 7 | Headlights, rear fog lights, body control module (ECU-B) | 7.5 |
| 8 | Front fog lights (FOG) | 15 |
| 9 | Toyota Ist and Scion xA Cigarette Lighter Fuse, clock, instrument cluster, warning buzzer, multi-information display, power outlet, audio system, power mirrors (ACC) | 15 |
| 10 | ABS, interior lights, multi-information display, PTC auxiliary heater, radiator cooling fan, SRS airbag system, climate control heater (ECU-IG) | 7.5 |
| 11 | On-board diagnostic port (OBD) | 7.5 |
| 12 | Turn signals, hazard warning flasher (HAZ) | 10 |
| 13 | Air conditioning system, climate control heater (A/C) | 7.5 |
| 14 | Seat heaters (S-HTR) | 10 |
| 15 | Not used | - |
| 16 | Engine Control Module (ECM), Transmission Control Module (TCM), shift lock system, brake lights (STOP) | 10 |
| 17 | Fuses: "ACC", "GAUGE", "DEF" ("DEF RLY"), "S-HTR", "WIPER", "ECU-IG" (AM1) | 50 |
| 18 | Power windows, power sunroof (POWER) | 30 |
| 19 | Air conditioning, heater blower motor (HTR) | 40 |
| 20 | Rear window defogger, heated side mirrors (DEF) | 30 |
| Relay Module Assignments | ||
| R1 | Heater blower motor | |
| R2 | Hazard warning / turn signal flasher | |
| R3 | Power windows, power sunroof | |
| R4 | Fuel Pump Relay - Circuit Opening Relay (C/OPN) | |