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.
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HOMESERVICE MANUALSACURA2018TLX BASE, 2.4L ENGREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEFUEL DELIVERYFUEL AND EMISSIONS - TESTING & TROUBLESHOOTING
2018 Acura TLX Base, 2.4L Eng
Fuel And Emissions - Testing & Troubleshooting
2018 Acura TLX Base, 2.4L EngSECTION Fuel And Emissions - Testing & Troubleshooting
- DTC Troubleshooting Index
- General Information
- Component Location Index
- Fuel and Emissions Systems Symptom Troubleshooting
- Engine Stalls - Diagnostic interview
- Engine Stalls (L4)
- Engine Stalls (V6)
- Engine Will Not Start, Engine Starts But Stalls Immediately, Or Engine Is Hard To Start (L4)
- Engine Will Not Start, Engine Starts But Stalls Immediately, Or Engine Is Hard To Start (V6)
- Hard To Start Engine - Diagnostic interview
- Fuel And Emissions Systems Symptom Troubleshooting Index (Without Auto Idle Stop System, KA/KC)
- Fuel And Emissions Systems Symptom Troubleshooting Index (With Auto Idle Stop System)
- Fuel Overflows During Refueling (No DTCs Set) (Without Auto Idle Stop System, KA/KC) (2015-17)
- Fuel Overflows During Refueling (No DTCs Set) (Without Auto Idle Stop System, KA/KC) (2018-19)
- Fuel Overflows During Refueling (No DTCs Set) (With Auto Idle Stop System) (2015-17)
- Fuel Overflows During Refueling (No DTCs Set) (With Auto Idle Stop System) (2018-19)
- How To Information
- How To Troubleshoot The Fuel And Emissions Systems (L4)
- Intermittent Failures
- Service Information
- Opens and Shorts
- CHECK SYSTEM Display Indication (CHECK STARTER SYSTEM)
- How to Use the HDS (Honda Diagnostic System)
- If the MIL did not stay on
- If you cannot duplicate the DTC
- HDS Clear Command
- Scan Tool Clear Command
- DTC Clear
- How to End a Troubleshooting Session (required after any troubleshooting)
- How to Troubleshoot Circuits at the PCM Connectors
- OBD Status
- How To Troubleshoot The Fuel And Emissions Systems (V6, Without Auto Idle Stop System)
- Intermittent Failures
- Service Information
- Opens and Shorts
- CHECK SYSTEM Display Indication (CHECK STARTER SYSTEM)
- How to Use the HDS (Honda Diagnostic System)
- If the MIL did not stay on
- If you cannot duplicate the DTC
- HDS Clear Command
- Scan Tool Clear Command
- DTC Clear
- How to End a Troubleshooting Session (required after any troubleshooting)
- How to Troubleshoot Circuits at the PCM Connectors
- OBD Status
- How To Troubleshoot The Fuel And Emissions Systems (V6, With Auto Idle Stop System)
- Intermittent Failures
- Service Information
- Opens and Shorts
- CHECK SYSTEM Display Indication (CHECK STARTER SYSTEM)
- CHECK SYSTEM Display Indication (CHECK AUTO START & STOP SYSTEM)
- How to Use the HDS (Honda Diagnostic System)
- If the MIL did not stay on
- If you cannot duplicate the DTC
- HDS Clear Command
- Scan Tool Clear Command
- DTC Clear
- How to End a Troubleshooting Session (required after any troubleshooting)
- How to Troubleshoot Circuits at the PCM Connectors
- OBD Status
- How To Troubleshoot The Fuel And Emissions Systems (L4)
- Fuel Supply System Description
- Improvement Control In Practical Use Fuel Consumption System Description
- PGM-FI System Description
- Testing
- Inspection/Adjustment
- Fuel Relieving And Draining
- Disassembly And Reassembly
- Circuit Diagram
- Fuel And Emissions Systems Circuit Diagram (L4) (2015-17)
- Fuel And Emissions Systems Circuit Diagram (L4) (2018-19)
- Fuel And Emissions Systems Circuit Diagram (V6, Without Auto Idle Stop System) (2015-17)
- Fuel And Emissions Systems Circuit Diagram (V6, Without Auto Idle Stop System) (2018-19)
- Fuel And Emissions Systems Circuit Diagram (V6, With Auto Idle Stop System) (2015-17)
- Fuel And Emissions Systems Circuit Diagram (V6, With Auto Idle Stop System) (2018-19)
- Troubleshooting
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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.