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.
On-board Diagnostics System: Function
The on-board diagnostics system detects and stores in the form of a code a fault that has occurred in any of the following input and output signal systems.
| Rear vehicle speed sensor | High clutch duty solenoid | Sports shift switch |
| Front vehicle speed sensor | Low & reverse duty solenoid | Engine speed signal |
| Throttle position sensor | Transfer duty solenoid | Lockup clutch |
| Line pressure linear solenoid | ATF temperature sensor | Torque converter turbine speed sensor |
| 2-4 brake duty solenoid | CAN communication signal circuit | 1, 2, 3, 4, R gear ratios |
| Lockup duty solenoid | Inhibitor switch | Shift lock solenoid |
| Low clutch duty solenoid | Brake switch |
If a fault has been detected, the system tells the fault by causing the SPORT indicator light to blink.
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.