Early two days to repair a Toyota overbearing 3400, the owner reported that the Toyota overbearing 3400 open headlamps ABS light, the test, if not open the lights how to try no problem, but the headlights, is in place to test, change several times Light, ABS light will turn bright.
    This looks, is completely unrelated to the system, why open the big light will be lit on the ABS lamp, open the head cover, check the headline and ABS lines have no short circuit and the like, the line no problem, The addition of light, and would like to increase the ABS will not get rid of the ABS, put the addition to the addition, with the original lights to the original line test, found that the headlights ABS lights do not shine.
    But also found that the troubleshooting, but also found a strange fault is the time to open the key, open the headlamps, the engine speed table will go to 1000 turn (but the car has not started ah), there is the engine fault lights will Off, off the headlights on the normal.
    This time to suspect that the line is not good contact, first of all think of mentioning iron, check the cable line, found that the battery is connected to the negative engine body. But there is no direct connection to the frame, is the engine body of the ground line connected to the frame have access to the ground, which should be bad grounding, bad circuit.
    To use the battery ride line, connect the battery negative and the frame, test, all normal, then add the device also connected, the test, all normal, their own made a bar money, connect the battery anode and frame, troubleshooting The