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.
MIL Circuit Troubleshooting
2010 Acura TL FWD V6-3.5LSECTION MIL Circuit Troubleshooting
MIL Circuit Troubleshooting
1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Do the gauge self-diagnostic function Initial Inspection and Diagnostic Overview.
Does the MIL indicator flash?
YES -
Go to step 3.
NO -
Substitute a known-good gauge control module, and recheck. If the symptom/indication goes away with a known-good gauge control module, replace the original gauge control module Service and Repair.οΏ½
3. Connect the HDS to the DLC Initial Inspection and Diagnostic Overview.
4. Check the SCS in the DATA LIST with the HDS.
Is a short indicated?
YES -
Go to step 5.
NO -
Update the ECM/PCM if it does not have the latest software ECM/PCM Update, or substitute a known-good ECM/PCM Initial Inspection and Diagnostic Overview, then recheck. If the symptom/indication goes away and the ECM/PCM was updated, troubleshooting is complete. If the symptom/indication goes away and the ECM/PCM was substituted, replace the original ECM/PCM Service and Repair.οΏ½
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect ECM/PCM connector A (49P), then disconnect the HDS.
7. Check for continuity between ECM/PCM connector terminal A32 and body ground.
Is there continuity?
YES -
Repair short in the wire between the ECM/PCM (A32) and the DLC.οΏ½
NO -
Update the ECM/PCM if it does not have the latest software ECM/PCM Update, or substitute a known-good ECM/PCM Initial Inspection and Diagnostic Overview, then recheck. If the symptom/indication goes away and the ECM/PCM was updated, troubleshooting is complete. If the symptom/indication goes away and the ECM/PCM was substituted, replace the original ECM/PCM Service and Repair.οΏ½
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.