Jimny fuses: what circuits are protected/controlled by what?
As these cars age a bit more, increasingly people are hitting blown fuses/circuits not working etc. This page is about trying to unravel what is controlled by what and where things are.
Fuse (and relay) box locations
Need some photos here, but there are two main fuse locations
1. Under bonnet (with a bunch of relays; a couple hide off in an additional box to the side)
![](https://teamghettoracing.com/wp-content/uploads/2024/07/underbonnet_fuse_covers.jpg)
2. In the footwell of the car (passenger side)
![](https://teamghettoracing.com/wp-content/uploads/2024/07/cabin_fuses_loation.jpg)
Some modules can have independent fuses buried inside them or accessed on their back, and, there are very high current fusable links integrated into the battery terminal (pictured in a moment)
Fuses and what they protect
For compatibility, I’ve stuck to official Suzuki numbering that matches the labels on fuse covers.
Under-bonnet
Battery terminal fuses
Note that if you connect items with high current draw (e.g. winches) to the fused side of the terminal you risk blowing those fuses. Sucks to blow a main fuse during a winch pull… separately fused accessories can also go directly to the +ve battery terminal as their fuses will protect the wiring directly.
![](https://teamghettoracing.com/wp-content/uploads/2024/07/batt_terminal_fuses_1.jpg)
![](https://teamghettoracing.com/wp-content/uploads/2024/07/batt_terminal_fuses_2_circuits.jpg)
Fuse # | Circuits | Fuse rating |
---|---|---|
1 | All electrical circuits Alternator | 120 A |
2 | 1st circuit: under bonnet fuse/relay box | 100 A |
3 | Blank | 80 A |
4 | 2nd circuit: under bonnet fuse/relay box | 100 A |
5 | Internal circuits: cabin, passenger’s side footwell fuse box | 50 A |
Fuse and relay box
![](https://teamghettoracing.com/wp-content/uploads/2024/07/under_bonnet_fuses_relays_web.jpg)
The extra headlight relay box contains up to 4 relays; auto headlight on models appear to only populate and use 2 of these. Presumably this is because the BCM does the headlight switching, rather than the headlight switch on the steering column itself, and so it accommodates full negative switching directly of the headlights. These relays are not numbered in any official documentation for cross reference purposes hence no numbering here.
![](https://teamghettoracing.com/wp-content/uploads/2024/07/headlight_relays.jpg)
Relays
Relay number | Label | Circuit | Related fuse # |
---|---|---|---|
1 | IG COIL | Ignition coils | Under bonnet 13 – 15A |
2 | RDTR2 | Radiator cooling fan, relay #2 (high speed) | Under bonnet 19 (RDTR) – 40A |
3 | STOP | Brake light | Cabin 61? (BACK) – 10A |
4 | F/P | Fuel pump | Under bonnet 28 (FI?) – 15A |
5 | HORN | Horn | Cabin 56 (HORN) – 15A |
6 | BLW | Blower motor | Under bonnet 7 (BLW) – 30A |
7 | CPRSR | A/C compressor | Under bonnet 25 (CPRSR) – 10A |
8 | FI MAIN | Main relay | Under bonnet 28 (FI) – 15A |
9 | H/L HI | Headlight high beam | Under bonnet 30, 31 (H/L HI R, H/L HI L) – 15A |
10 | FR FOG | Fog lamp (front) | Under bonnet 23 (FR FOG) – 20A |
11 | BLANK | ||
12 | RDTR | Radiator cooling fan, relay #1 (low speed) | Under bonnet 19 (RDTR) – 40A |
13 | ST | Starter motor relay | Under bonnet 6 (ST) – 30A |
14 | RDTR3 | Radiator cooling fan, relay #3 (high speed – grounding relay) | Earth’s the 4th pin on the radiator fan motor so no fuse needed |
Fuses
Fuse # | Circuit | Label on lid | Capacity |
---|---|---|---|
6 | Starter motor | ST | 30A |
7 | Blower motor | BLW | 30A |
8 | BLANK | ||
9 | ABS/ESP pump | ABS MOT | 40A |
10 | Ignition | IGN | 50A |
11 | Fuses 49, 50 and 51 in cabin fuse box | B/U | 30A |
12 | Headlight high beam relay | H/L HI | 25A |
13 | Ignition coils | IG COIl | 15A |
14 | BLANK | ||
15 | ABS/ESP control module | ABS SOL | 25A |
16 | Left headlight / headlight relay | H/L L | 15A |
17 | Right headlight / headlight relay | H/L R | 15A |
18 | Headlight levelling module | H/L CLNR | 30A |
19 | Radiator fan power | RDTR | 40A |
20 | BLANK | ||
21 | Power steering | P/S | 40A |
22 | BLANK | ||
23 | Fog light(s) | FR FOG | 20A |
24 | 4wd module | 4WD | 10A |
25 | A/C compressor | CPRSR | 10A |
26 | 2nd interior circuit | IGN2 | 50A |
27 | A/T transmission control module | T/M | 15A |
28 | Main relay | FI | 15A |
29 | BLANK | ||
30 | Headlight high beam R | H/L HI R | 15A |
31 | Headlight high beam L | H/L HI L | 15A |
32 | ECU start signal | ST SIG | 5A |
33 | BLANK |
Headlight control relay box (LEDs/auto headlight cars)
Need to check up the things contained in this cause it is separate to the main fuse compartment…
Passenger compartment
Some of these circuits control relays inside the BCM/wiring junction box itself; presumably these are solid state and/or integrated to the circuitry.
![](https://teamghettoracing.com/wp-content/uploads/2024/07/cabin_fuses.jpg)
Fuse # | Circuit | Label | Capacity |
---|---|---|---|
34 | Power windows ESP off, hill descent switches | P/W | 30A |
35 | Gauges | MTR | 10A |
36 | ECU Immobiliser | IG | 15A |
37 | Power steering control module | IG1 SIG1 | 5A |
38 | BLANK | SHIFT | 20A |
39 | BLANK | S/R | 20A |
40 | BLANK | ||
41 | Door locks | D/L | 20A |
42 | BCM – brake light | STL | 15A |
43 | BCM – hazards | HAZ | 10A |
44 | BLANK | A-STOP | 5A |
45 | Rear fog lamp (where fitted) | RR FOG | 10A |
46 | ABS control module Steering angle sensor | ABS | 5A |
47 | Seat heater (where fitted) | S/H | 15A |
48 | Autonomous braking sensor | IG1 SIG3 | 5A |
49 | Interior ceiling light(s) | DOME2 | 10A |
50 | Gauges (lighting?) | DOME | 5A |
51 | Infotainment/radio permanent power | RADIO | 15A |
52 | CAN gateway module TPMS module (if fitted) Emergency call module (if fitted) | CONT | 5A |
53 | Ignition switch | KEY 2 | 5A |
54 | Power window main switch Other switches in central switch panel | P/W T | 20A |
55 | Ignition switch | KEY | 5A |
56 | Horn relay | HORN | 15A |
57 | Left tail light | TAIL L | 5A |
58 | Right tail light | TAIL R | 10A |
59 | Airbag | A/B | 10A |
60 | 4wd, transmission, CAN gateway modules TPMS/Emergency call modules (if fitted) Brake light switch Headlight switch | IG1 SIG | 10A |
61 | Reverse light switch A/T gear position signals Headlight levelling module HVAC control unit – manual HVAC control panel – auto climate BCM (some circuits) | BACK | 10A |
62 | BLANK | ACC3 | 10A |
63 | Rear window heater/demister | RR DEF | 5A |
64 | Power mirrors: motors for adjustment/swivel HVAC control unit | MRR HTR | 10A |
65 | Accessory power/cigarette lighter socket (Front and rear, if fitted) | ACC2 | 15A |
66 | Infotainment system (switched power?) Power mirror switch | ACC | 5A |
67 | Rear wiper motor & relay | WIP | 10A |
68 | Blower motor fan relay Rear demister relay | IG2 SIG | 5A |
69 | Front, rear washer motors Headlight washer motor (if fitted) | WASH | 15A |
70 | Front wiper motor | FR WIP | 25A |
71 | Brake light relay Brake light switch | STOP | 10A |