What's with the automatic flameout when hackers stop?

The idle motor of Pacific Auto Network engine is stuck; The wire sheath of idle motor is somewhat worn; Idle air hole is too dirty; There is something wrong with the engine throttle position sensor; There is a problem with the camshaft position sensor or crankshaft position sensor; Engine speed sensor is faulty or too dirty; There is a problem with the idle speed control program in the engine electronic control unit.

A Nissan hacker with a mileage of about 654.38+0.8 million KM. Users reported that the vehicle suddenly turned off when driving, the fuse of ignition power supply was blown, and the vehicle could not be started, and there were good and bad when the fuse was plugged in.

Fault diagnosis:

1) Maintenance personnel check whether the ignition power supply fuse is blown, inserted or broken. If the engine and the transmission control module in the vehicle diagnostic instrument can be started continuously, the DTC clearing interface will not exist or sometimes will not exist. When the engine DTC interface exists, there is a past fault code U 100 1 communication circuit fault.

2) The maintenance personnel judge that the CAN line is broken or the circuit is grounded according to the situation that the diagnostic instrument and the ignition switch are burnt out when they are turned on.

3) After consulting the user to install anti-theft, it was found that a wire near the cab harness and the hood opening frame was burnt out by grounding, and the sheath of the next wire was burnt out to expose the wire core. When it is judged that the vehicle hits the ground of the wiring harness, the fuse will be blown, and when it is connected with other wires, the CAN wire will be affected. It should be because the position of the wire harness was changed when the anti-theft device was installed, and the wire harness was not wrapped properly, resulting in wire wear.

Maintenance summary:

1. Fully understand the layout and location of the wiring harness.

2. Check carefully and think positively.

3. For vehicles with intermittent faults, the focus should be on the line.

(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)