1. Basic vehicle information and fault phenomena
Vehicle model: Gasoline/Automatic/Pickup
Driving mileage: 4639KM
Fault phenomenon: 4WD cannot be used and all the related indicator lights on the dashboard flash (4H and 4L).
2. Fault phenomenon cause analysis, judgment and process
2.1 Fault phenomenon cause analysis and judgement
2.1.1 Check whether the four-wheel drive control circuit connection is normal;
2.1.2 Check whether the four-wheel drive motor works properly;
2.1.3 Check whether four-wheel drive computer board works properly.
2.2 Fault repair processing
2.2.1 Check the control system circuits and all were normal;
2.2.2 Check The controller and motor and all worked normally;
2.2.3 Re-matched The 4-wheel drive control and the problem was solved.
3. Four-wheel drive controller activation method:
Step 1: Turn the knob to the 2H position and completely power off;
Step 2: Power on after one minute (NOTE: Do not start the engine);
Step 3: Continuously rotate the knob (2H4H) within 5 seconds and finally stop at 2H position.
