1) 4 foot brake light switch brake lights and two light bulbs and automatic transmission control unit J217 of 15 feet are not connected, when the light bulb is normal, the brake 4 feet on the light switch for 0V.
2) prevent the brake light switches, depress the shift lever in the P lock punishment program files emergency brake pedal, the brake signal can not be communicated to the automatic transmission control unit, the automatic transmission control unit not be able to control the shift lock solenoid valve is less than the internal ground connection, shift solenoid not be able to lock from the lock position is less than, less than the shift lever out of her inability to P file, the formation of the vehicle not be able to less shift calf wish
3) Remove the two brake lights also light bulbs, then the 4 pin voltage is automatic transmission control unit 15, pin voltage, the internal voltage control unit for 7.8V. This makes automatic transmission control unit J217 thought it was closed the brake lights of Kaifeng, so Tiaodang power pole shift lock solenoid gear lever while the acquittal, this time has been able to move the shift lever, the vehicle can travel.

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