Toyota iQ & Scion iQ (2008-2015) Description of Fuses
Passenger Compartment
LHD
RHD
- Steering Lock Actuator
- Fuse Box
- Power Steering ECU
- Relay Box
- Turn Signal Flasher
- Windshield Wiper Relay
- Gasoline: Power Management Control ECU
Diesel: Power Source Control ECU
- Engine Stop and Start ECU
- Transponder Key Amplifier
- Airbag Sensor Assembly
- Shift Lock Control ECU
- A/C Amplifier
- RHD: Double Lock Door Control Relay
Passenger Compartment Fuse Box
LHD
RHD
1. Remove the cover. Use a flathead screwdriver which is wrapped with a cloth.
2. Remove the lid.
Fuses Specifications
| No. |
Name |
A |
Description |
| 1 |
ECU-IG NO.1 |
7.5 |
Vehicle stability control system, shift lock control system, electric power steering, automatic headlight system, main body ECU, tire pressure warning system |
| 2 |
GAUGE |
10 |
Electric cooling fan(s), charging system, emergency flashers, front passenger’s seat belt reminder light, back-up lights, multiport fuel injection system/sequential multiport fuel injection system, windshield wiper ECU, auto anti-glare inside rear view mirror |
| 3 |
HTR-IG |
10 |
Air conditioning system, wiper deicer, rear window defogger |
| 4 |
- |
- |
- |
| 5 |
WASHER RR |
10 |
Windshield washer |
| 6 |
WIPER RR |
10 |
Rear window wiper |
| 7 |
WIPER FR |
25 |
Windshield wipers |
| 8 |
WASHER FR |
10 |
Windshield washer |
| 9 |
OBD |
7.5 |
On-board diagnosis system |
| 10 |
FOG RR |
7.5 |
Rear fog light |
| 11 |
PANEL NO.2 |
5 |
with Daytime Running Light or Automatic Light Control: Daytime running light system |
| TAIL NO.1 |
10 |
Manual headlight leveling dial, front position lights, tail lights, license plate lights |
| 12 |
DOOR NO.2 |
20 |
Power windows |
| 13 |
D/L NO.1 |
15 |
Power door lock system, main body ECU |
| 14 |
DOOR NO.1 |
30 |
Power windows |
| 15 |
- |
- |
- |
| 16 |
- |
- |
- |
| 17 |
CIG |
15 |
Power outlet |
| 18 |
ACC |
5 |
Outside rear view mirrors, audio system, shift lock control system, main body ECU |
| 19 |
PANEL NO.1 |
5 |
with Automatic Light Control: Meter |
| PANEL |
5 |
Meter, power management ECU |
| 20 |
TAIL |
10 |
with Automatic Light Control: Front position lights, tail lights, license plate lights, rear fog light, front fog lights, manual headlight leveling dial, multiport fuel injection system/sequential multiport fuel injection system, instrument cluster, windshield wiper ECU |
| TAIL NO.2 |
10 |
Front position lights, tail lights, license plate lights, rear fog light, front fog lights, manual headlight leveling dial, multiport fuel injection system/sequential multiport fuel injection system, instrument cluster, windshield wiper ECU |
| 21 |
FOG FR |
15 |
Front fog lights |
| 22 |
AM1 |
7.5 |
"ACC" fuse, starting system |
| 23 |
STOP |
10 |
Vehicle stability control system, power management ECU, shift lock control system, stop lights, multiport fuel injection system/sequential multiport fuel injection system |
| 24 |
D/L NO.2 |
10 |
Power door lock system |
| 25 |
SEAT-HTR |
15 |
Seat heaters |
| 26 |
- |
- |
- |
| 27 |
- |
- |
- |
| 28 |
- |
- |
- |
| 29 |
- |
- |
- |
| 30 |
- |
- |
- |
| 31 |
- |
- |
- |
| 32 |
- |
- |
- |
| 33 |
- |
- |
- |
| 34 |
- |
- |
- |
| 35 |
- |
- |
- |
| 36 |
- |
- |
- |
| 37 |
- |
- |
- |
| 38 |
- |
- |
- |
| 39 |
- |
- |
- |
Passenger Compartment Relay Box
Relay Block
| No. |
Description |
| R1 |
Front fog light (FR FOG) |
| R2 |
Heater (HTR) |
| R3 |
Panel light (PANEL) |
- Door Control Receiver
Engine Compartment
- Fusible Link Block
- Fuse Box
- Diesel: ECM
- Gasoline: ECM
- Relay Box
- LHD: Skid Control ECU with Actuator
- Glow Plug Relay
- RHD: Skid Control ECU with Actuator
Engine Compartment Fuse Box
Fuses Specifications
| No. |
Name |
A |
Description |
| 1 |
- |
- |
- |
| 2 |
- |
- |
- |
| 3 |
DEFOGGER |
30 |
Gasoline: Rear window defogger |
| DEFOGGER NO.1 |
30 |
Diesel: Rear window defogger |
| 4 |
- |
- |
- |
| 5 |
WIP-S |
7.5 |
Gasoline: Power management ECU |
| DEFOGGER NO.2 |
7.5 |
Diesel: Power Source Control ECU |
| 6 |
MIR HTR |
7.5 |
Outside rear view mirror defoggers |
| 7 |
DOME |
15 |
Interior light, audio system |
| 8 |
ECU-B NO.1 |
7.5 |
Main body ECU, power door lock system, smart entry & start system |
| 9 |
H-LP LO |
20 |
Toyota:
with Daytime Running Light or Automatic Light Control: Headlight (low beam) |
| H-LP LH |
10 |
Toyota:
without Daytime Running Light or Automatic Light Control: Headlight (low beam)Left-hand headlight |
| H-LP MAIN |
20 |
Scion (with Daytime Running Light): "H-LP RH LO", "H-LP LH LO" fuses |
| 10 |
AM2 NO.2 |
7.5 |
Power management ECU |
| 11 |
ECU-B NO.2 |
5 |
Meter, power windows, air conditioning system |
| 12 |
ETCS |
10 |
Electronic throttle control system |
| 13 |
TURN&HAZ |
10 |
Turn signal lights, emergency flashers |
| 14 |
IMMOBI |
7.5 |
Smart entry & start system |
| 15 |
D/C CUT |
30 |
"ECU-B NO.1", "DOME" fuses |
| 16 |
EFI NO.1 |
10 |
Gasoline: Multiport fuel injection system/sequential multiport fuel injection system |
| ECD NO.1 |
10 |
Diesel: Multiport fuel injection system/sequential multiport fuel injection system |
| 17 |
IG2 |
10 |
SRS airbag system, meter |
| 18 |
IGN |
15 |
Gasoline: Injection, igniter |
| ECD NO.2 |
7.5 |
Diesel: Multiport fuel injection system/sequential multiport fuel injection system |
| 19 |
ALT-S |
7.5 |
Charging system |
| 20 |
EFI-MAIN |
20 |
Gasoline: Multiport fuel injection system/sequential multiport fuel injection system, "EFI NO.1" fuse, fuel pump |
| ECD-MAIN |
30 |
Diesel: Multiport fuel injection system/sequential multiport fuel injection system |
| 21 |
HORN |
10 |
Horn |
| 22 |
AM2 NO.1 |
30 |
Starting system |
| 23 |
- |
- |
- |
| 24 |
H-LP HI |
7.5 |
Toyota:
without Daytime Running Light or Automatic Light Control: Right-hand headlight |
| 25 |
STRG LOCK |
20 |
Steering lock system |
| 26 |
H-LP RH |
10 |
Toyota:
with Daytime Running Light or Automatic Light Control: Headlight (high beam) |
| H-LP MAIN HI |
25 |
Scion: "H-LP RH HI", "H-LP LH HI" fuses |
| 27 |
ABS NO.2 |
30 |
Anti-lock brake system |
| 28 |
HTR-B |
40 |
"HTR", "BLR" fuses |
| 29 |
FUEL HTR |
30 |
Fuel heater |
| 30 |
ABS NO.1 |
50 |
Anti-lock brake system |
| 31 |
RDI |
30 |
Electric cooling fan |
| 32 |
EPS |
50 |
Electric power steering |
| 33 |
BBC |
40 |
Stop & Start system |
| Relay |
| R1 |
Electric cooling fan (FAN NO.2) |
| R2 |
Starter (ST) |
| R3 |
Rear window defogger (DEFOGGER) |
| R4 |
Theft deterrent (S-HORN) |
| R5 |
Electric cooling fan (FAN NO.1) |
Engine Compartment Relay Box
Fuses Specifications
| No. |
Name |
A |
Description |
| 1 |
PWR HTR |
25 |
PTC heater |
| DEICER |
20 |
Windshield wiper de-icer |
| PTC NO.2 |
30 |
PTC heater |
| 2 |
- |
- |
- |
| 3 |
H-LP LH LO |
10 |
Left-hand headlight (low beam) |
| 4 |
H-LP RH LO |
10 |
Right-hand headlight (low beam) |
| 5 |
H-LP LH HI |
10 |
Scion: Left-hand headlight (high beam) |
| 6 |
H-LP RH HI |
10 |
Scion: Right-hand headlight (high beam) |
| 7 |
PTC NO.2 |
30 |
PTC heater |
| 8 |
PTC NO.3 |
30 |
PTC heater |
| 9 |
- |
- |
- |
| 10 |
- |
- |
- |
| 11 |
PTC NO.1 |
30 |
1KR-FE: PTC heater |
| PTC NO.1 |
50 |
Except 1KR-FE: PTC heater |
| Relay |
| R1 |
1KR-FE: PTC heater (PTC NO.1) |
| R2 |
- |
| R3 |
PTC heater (PTC NO.2) |
| R4 |
PTC heater (PTC NO.3) |
| R5 |
- |
| R6 |
Dimmer (DIM) |
| R7 |
Headlight (H-LP) |
| R8 |
Except 1KR-FE: PTC heater (PTC NO.1) |
Fusible Link Block
Gasoline:
Diesel:
Fuses Specifications
| No. |
Name |
A |
Description |
| 1 |
GLOW DC/DC |
80 |
Diesel: Engine control |
| 2 |
MAIN |
80 |
"EFI MAIN", "EFI NO.1", "HORN", "AM2 NO.1", "AM2 NO.2", "DOME", "ECU-B NO.2", "TURN&HAZ", "H-LP LO", "H-LP LH LO", "H-LP MAIN", "H-LP MAIN HI", "ECU-B NO.1", "D/C CUT", "ETCS", "H-LP HI", "IG2", "IGN", "ALT-S" fuses |
| 3 |
ALT |
120 |
Charging system, "RDI", "ABS NO.1", "ABS NO.2", "HTR-B", "ACC", "CIG", "GAUGE", "ECU IG NO.1", "HTR-IG", "WIPER WASHER", "AM1", "DOOR NO.1", "STOP", "DOOR NO.2", "OBD", "RR FOG", "FR FOG", "DEF", "TAIL", "TAIL NO.2", "EPS", "PTC NO.1", "PTC NO.2", "PTC NO.3", "DEICER", "D/L NO.1", "D/L NO.2", "PANEL", "PANEL NO.1" fuses |