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.
ACC Switch Check
- CHECK ACC SWITCH
With CONSULT-III
Check ACC switch ("ACC ON SW") in "DATA MONITOR" mode with CONSULT-III.
DATA MONITORMonitor item Condition ACC ON SW Ignition switch position is ACC or ON : ON Ignition switch position is OFF : OFF Without CONSULT-III
Check voltage between BCM connector and ground.
CONNECTOR TERMINAL VOLTAGE SPECIFICATIONTerminals Ignition switch condition Voltage (V) (Approx.) (+) (-) BCM connector Terminal M18 11 Ground ACC or ON Battery voltage OFF 0 OK or NG
OK: ACC switch is OK.
NG: Check the following.
- 10A fuse [No. 6, located in fuse block (J/B)]
- Harness for open or short between BCM and fuse.
Use the Manual With the Right Hardware
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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.
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