Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Electrical System - Testing & Troubleshooting / Gen Info (Except Hybrid)
2018 Acura MDX BaseSECTION Electrical System - Testing & Troubleshooting / Gen Info (Except Hybrid)
- Check
- Component Location Index
- Input Test
- Description
- 12 Volt Battery System Description - Control/Function (2016)
- 12 Volt Battery System Description - Control/Function (2017 2018 2019 2020)
- 12 Volt Battery System Description - Fail-safe Function
- 12 Volt Battery System Description - Overview (2016)
- 12 Volt Battery System Description - Overview (2017 2018 2019 2020)
- 12 Volt Battery System Description - System Diagram (2016)
- 12 Volt Battery System Description - System Diagram (2017 2018 2019 2020)
- Electrical Schematic
- Test
- Relay Box Locations And Control Unit Locations
- Fuse Relay Box Connector Locations
- Fuse/Relay Box Connector Locations (2014 2015)
- Main Under-Hood Fuse Box
- Under-Hood Fuse/Relay Box
- Under-hood Fuse/Relay Box (Relay Control Module Part)
- Auxiliary Under-Hood Relay Block
- Driver's Under-Dash Fuse/Relay Box
- Passenger's Under-Dash Fuse/Relay Box
- Auxiliary Under-Dash Relay Block A
- Auxiliary Under-Dash Relay Block B
- Rear Fuse/Relay Box
- Auxiliary Rear Relay Block A
- Auxiliary Rear Relay Block B
- Fuse/Relay Box Connector Locations (2016)
- Main Under-Hood Fuse Box
- Under-Hood Fuse/Relay Box
- Under-hood Fuse/Relay Box (Relay Control Module Part)
- Auxiliary Under-Hood Relay Block (With auto idle stop system)
- Auxiliary Under-Hood Relay Block (Without auto idle stop system)
- Driver's Under-Dash Fuse/Relay Box
- Auxiliary Under-Dash Fuse/Relay Box
- Auxiliary Under-Dash Relay Block A
- Auxiliary Under-Dash Relay Block B
- Auxiliary Under-Dash Relay Block C
- Rear Fuse/Relay Box
- Auxiliary Rear Relay Block A
- Auxiliary Rear Relay Block B
- Fuse/Relay Box Connector Locations (2017 2018 2019 2020)
- Main Under-Hood Fuse Box
- Under-Hood Fuse/Relay Box
- Under-hood Fuse/Relay Box (Relay Control Module Part)
- Auxiliary Under-Hood Relay Block
- Driver's Under-Dash Fuse/Relay Box
- Auxiliary Under-Dash Fuse/Relay Box
- Passenger's Under-Dash Fuse/Relay Box
- Auxiliary Under-Dash Relay Block A
- Auxiliary Under-Dash Relay Block B
- Auxiliary Under-Dash Relay Block C
- Rear Fuse/Relay Box
- Auxiliary Rear Relay Block A
- Auxiliary Rear Relay Block B
- Fuse/Relay Box Connector Locations (2014 2015)
- Fuse to Components Index
- Fuse to Components Index (2014 2015)
- Fuse to Components Index (With Auto Idle Stop System) (2016)
- Fuse to Components Index (Without Auto Idle Stop System) (2016)
- Fuse to Components Index (Without Auto Idle Stop System) (2017)
- Fuse to Components Index (With Auto Idle Stop System) (2017)
- Fuse to Components Index (Without Auto Idle Stop System) (2018)
- Fuse to Components Index (With Auto Idle Stop System) (2018)
- Fuse to Components Index (Without Auto Idle Stop System) (2019 2020)
- Fuse to Components Index (With Auto Idle Stop System) (2019 2020)
- Ground to Components Index
- Connector and Harness Locations
- Circuit Diagram
- Learning Reset Clear
- Symptom Troubleshooting
- Troubleshooting
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.