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.
Speedometer Does Not Work (A/T)
2010 Acura TL FWD V6-3.5LSECTION Speedometer Does Not Work (A/T)
Speedometer does not work
F-CAN communication line error
Gauge control module defective
PCM defective
Output shaft (countershaft) speed sensor defective
Notes
Check the F-CAN communication line F-CAN Circuit Troubleshooting.
Notes
Check the F-CAN communication line by using the gauge control module self-diagnostic function Initial Inspection and Diagnostic Overview.
Notes
Check the speedometer drive circuit in the gauge control module using the HDS Initial Inspection and Diagnostic Overview.
Notes
Check the speed sensor installation.
Notes
Inspect the output shaft (countershaft) speed sensor O-ring for wear and damage.
RENDER: 1.0x
NO RELATED
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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.