13 What happened to Bora epc and the sideslip light?

Pacific Auto Network 1, the throttle body is dirty and has carbon deposit, so clean the throttle. Second, there is vacuum leakage in the air intake system. Check whether the vacuum hose is firmly connected and broken. At this time, there is a theoretical value between the air flow rate detected by the engine through the air flow meter and the throttle opening (how big the throttle is and how much air is fed), which will cause errors and make the mixture too lean. In both cases, the EPC light will be on.

The fuel of the handlebar was changed to liquefied gas, and many wire harnesses and mechanical accessories were added. The fault is suspected to be caused by replacing the wiring harness. Therefore, after removing all additional wire harnesses and mechanical accessories, wiring inspection should be carried out. As can be seen from the circuit diagram (as shown in Figure 2), the throttle body has six wires, and the multimeter is used to normally connect the throttle body to the five wires of the engine computer. The voltage of T6X/2 is 5V, which is normal. Check whether there is a short circuit between the ground and the positive electrode, and then measure whether there is a short circuit between the wires. When it is measured that the two lines T6X/ 1-T6X/6 are actually connected, it can be seen from the circuit diagram that the two lines are directly connected to the engine computer and should not be connected, so it can be judged that there is a short circuit between the two lines.

Fault analysis: Inspection of the wiring harness found that two wires T6X/ 1-T6X/6 were worn out by the installed liquefied gas control unit, pressed together, and directly connected to G 187 (throttle actuator sensor

1) short circuit, but also affect G 188 (throttle actuator sensor

2) signal. This caused the EPC light and sideslip light of the car to light up and the acceleration was weak. Troubleshooting: Rebound the wiring harness, and this kind of failure did not happen again.