The Chevrolet Spark (M400), produced from 2016 to 2022, is a compact car known for its efficiency, affordability, and modern features, making it a popular choice for urban driving. Despite its small size, the Spark relies on a well-organized electrical system to power various functions, and the fuse box and relays are central to this system’s reliability.
The fuse box in the Chevrolet Spark M400 protects the vehicle’s electrical circuits, covering essential systems such as lighting, infotainment, and power accessories. Typically, there is one main fuse box located in the engine compartment, and sometimes an additional one inside the cabin. These fuses safeguard against electrical overloads or short circuits by “blowing” to prevent damage to the systems they protect.
Relays in the Spark serve as electrically operated switches that control high-current devices, such as the starter motor and cooling fans. Relays allow these systems to be operated by lower-power control circuits, preventing the car’s wiring from being overloaded. A malfunctioning relay can cause issues like the engine not starting or overheating problems.
Regular checks on the fuse box and relays are vital for ensuring the Chevrolet Spark’s electrical systems function properly, contributing to its overall reliability and performance.
MUST READ: DYI – How to Check Car Fuses?
(2016-2022) Chevrolet Spark (M400) fuse box and relay with Diagram
WARNING
- Never replace a fuse with one that has a higher amperage rating.
- A fuse with a too-high amperage could damage the electrical part and cause a fire.
- On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
- If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
- Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
Chevrolet Spark (M400) 2016-2022 fuse assignment
- Cigar lighter (power outlet) fuse in the Chevrolet Spark is located in the Instrument panel fuse box (see fuse “APO” (Auxiliary power outlet)).
Year of production: from 2016, 2017, 2018, 2019, 2020, 2021, 2022
Instrument Panel Fuse Box
Fuse box location
It is located in the instrument panel (on the driver’s side), behind the lid.
Fuse box diagram
Assignment of the fuses and relays in the interior fuse box
| Name | Description |
|---|---|
| ONSTAR | OnStar |
| HVAC CNTR/ECC | HVAC Control Module/ Electronic Climate Control |
| IPC | Instrument panel cluster |
| TCM | Transmission control module |
| RDO | Radio |
| BCM1 (AT S&S) | Body control module 1 (CVT stop and start) |
| SBSA/RPA | Side Blind Spot Alert / Rear Park Assist |
| DLC | Data link connector |
| ESCL | Electric steering column lock |
| SDM | Sensing and diagnostic module |
| TRANSD | TRANSD / DC-DC converter |
| AQI | 2019-2020: Air quality ionizer 2021-2022: Virtual Key Pass System Module |
| ETCS | Electronic toll collection system |
| LPM | Linear power module |
| PEPS | Passive entry/ Passive start |
| DLIS (Non AT S&S) | Discrete logic ignition switch (non-CVT stop and start) |
| FCA | Forward collision alert |
| IPC | Instrument panel cluster |
| RLAD | Reflected LED alert display |
| HLLD SW | Headlamp leveling switch |
| FRT PWR WNDW | Front power window |
| REAR PWR WNDW | Rear power window |
| Blank | Not Used |
| MTA | Automated manual transmission module |
| APO | Auxiliary power outlet |
| S/ROOF | Sunroof |
| CGM | Central gate module (2018) |
| Blank | Not Used |
| BCM8 | Body control module 8 |
| BCM7 | Body control module 7 |
| BCM6 | Body control module 6 |
| BCM5 | Body control module 5 |
| BCM4 | Body control module 4 |
| BCM3 | Body control module 3 |
| BCM2 (Non AT S&S) | Body control module 2 (non-CVT stop and start) |
| BCM1 (Non AT S&S) | Body control module 1 (non-CVT stop and start) |
| DLIS (AT S&S) | Discrete logic ignition switch (CVT stop and start) |
| SWC BKLT | Steering wheel controls backlighting |
| Blank | Not Used |
| TRANS (200/ 400W) / LOGISTICS | DC DC converter/ Logistics |
| EXP PWR WNDW | Driver express power window |
| BLWR | Blower motor |
| HTD/SEAT | Front heated seats |
| HVAC CNTR | HVAC module |
| HTD/STR | Heated steering wheel |
| BCM2 (AT S&S) | Body control module 2 (CVT stop and start) |
| RLY1 | Logistics relay |
| RLY2 | Accessory/ Retained accessory power relay |
| RLY3 | Interruptible retained accessory power relay |
| RLY4 | Run relay |
Engine Compartment Fuse Box
Fuse box location
Fuse box diagram
Assignment of the fuses and relays in the engine compartment
| № | Description |
|---|---|
| 1 | Liftgate latch |
| 2 | 2016-2018: Not Used. 2019-2022: Transmission output speed sensor |
| 3 | Rear defogger |
| 4 | Exterior rearview mirror heater |
| 5 | Sunroof |
| 6 | Continuously variable transmission control module |
| 7 | Mass air flow sensor |
| 8 | 2016-2018: Auxiliary heater pump. 2019-2022: Not Used |
| 9 | ABS valve |
| 10 | Regulated voltage control |
| 11 | Rear vision camera |
| 12 | Not Used |
| 13 | Not Used |
| 14 | Engine control module/ Transmission control module |
| 15 | Fuel injection control module/ Starter motor |
| 16 | Fuel pump motor |
| 17 | Engine control module 1 |
| 18 | Engine control module 2 |
| 19 | Injector/lgnition |
| 20 | A/C system |
| 21 | Intelligent battery sensor |
| 22 | Electric steering column lock |
| 23 | Cooling fan – low |
| 24 | 2016-2018: Not Used. 2019-2022: Virtual key pass system sensor |
| 25 | Exterior rearview mirror motor control |
| 26 | Engine control module/ Transmission control module battery |
| 27 | Canister vent solenoid |
| 28 | 2016-2018: Brake pedal switch. 2019-2022: Not Used |
| 29 | Automatic occupant sensing |
| 30 | Headlamp leveling motor |
| 31 | Horn |
| 32 | Front fog lamps |
| 33 | Left high-beam headlamp |
| 34 | Right high-beam headlamp |
| 35 | 2016-2018: Not Used. 2019-2020: Virtual key pass system module 2021-2022: Air Quality Ionizer |
| 36 | Rear wiper |
| 37 | Left cornering lamp |
| 38 | Washer motor |
| 39 | Right cornering lamp |
| 40 | Not Used |
| 41 | 2016-2018: Not Used. 2019-2022: Virtual key pass system sensor |
| 42 | Starter 2 |
| 43 | In-panel bussed electrical center |
| 44 | Automated manual transmission |
| 45 | Starter 1 |
| 46 | ABS pump |
| 47 | Cooling fan – high |
| 48 | Front wiper motor |
| 49 | Accessory/ Retained accessory power |
| Relay | |
| RLY1 | Rear defogger |
| RLY2 | Transmission control module |
| RLY3 | Fuel pump motor |
| RLY4 | Starter 2 |
| RLY5 | A/C system |
| RLY6 | 2016-2018: Auxiliary heater pump. 2019-2022: Not Used |
| RLY7 | Cooling fan – low |
| RLY8 | Run/Crank |
| RLY9 | 2016-2018: WR/TRN. 2019-2022: Powertrain |
| RLY10 | Starter 1 |
| RLY11 | Cooling fan – high |
| RLY12 | Front fog lamps |
Conclusion
For owners and enthusiasts of classic Chevrolet Spark (M400) 2016-2022, understanding the fuse box and relay systems is essential for vehicle maintenance. Regular inspection and maintenance of these components helped ensure the vehicle’s longevity and reliability, preserving its status as a symbol of Chevrolet’s craftsmanship and innovation in the automotive industry during that era.
