Fault phenomenon
    (D, S, L) can not move forward, then D lights flashing, if the reverse gear can be reversed. Users need to start after the warm-up about 15min before the trip to open up after the feeling that nothing is not normal, and the hot car after the fire and then start the gear is normal.
    Troubleshooting and troubleshooting
    Pick up the car when the hot car, then road test, feeling the car speed slightly slow, no obvious abnormal feeling. Back to factory inspection CVT transmission oil level in the normal range. Then, the use of Honda dedicated computer detector HDS to detect, enter the CVT system found fault code DTC34-1 (P1885) active pulley speed sensor failure, the cause of the malfunction: sensor line short circuit, open circuit, ground bad, the sensor itself Fault and so on.
    According to the fault P1885 prompts for its maintenance, the sensor power supply, ground line normal, the signal line is also normal. Then replace the active pulley speed sensor, with HDS to eliminate the fault code, and then run the engine will be placed in the R, D, S, L bit for a few seconds, will soon find the D block light flashes, P1885 failure again Time. And replace ECM / PCM try, replace the invalid.
    At this time, I also think of inspection CVT transmission oil surface feel more dirty oil, so in turn its CVT transmission oil for replacement. As the hot car test did not feel any changes, decided to park the car in the factory the next morning to test.
    The next morning to start the car and found that the battery power, P block also can not withdraw, the motor does not turn, speakers are not ring. Which is associated with the fault phenomenon, whether the battery failure caused by active pulley solenoid valve, driven pulley solenoid valve, starting clutch control solenoid valve operating voltage is too low and the formation of cold start can not be driven, so the battery Detection found that the voltage is lower than 8.5V, has a serious loss of electricity, so the replacement of the battery. Replace the battery after the start of the test, hanging forward gear driving, feeling about 3s hysteresis, and then the car to open up, cold when there is no D indicator light flashes, the car is basically normal driving. And other engine water temperature normal (fan operation) after the start of its clutch calibration: start the engine, open the headlights, no load conditions in the D-bit driving the car until the speed of 60km / h. Then, do not step on the brake pedal, in more than 5s time to slow down the car, you can pull the handbrake to slow down until the car stopped. And then test, to confirm the starting clutch control system barrier (the steps in the disconnect the battery terminal, repair transmission, change the engine after the implementation).
    (2350 ~ 2650r / min), indicating that its forward clutch, starting clutch, and the reverse brake is currently working properly. The speed of the transmission is measured within the normal range (2350 ~ 2650r / min).
    HDS to detect the car, the current no fault code. And then enter the data list to observe, the value of the normal range, the above analysis to determine the car, the car parked in the factory over the night, to the morning and then test, start after the forward block can be moved forward, The At this point, OK can be delivered. After the phone call to visit the user several times, the user said very satisfied, the car in good condition.
    At present, although the car is repaired, but I can not be sure that the transmission oil is too dirty or battery power shortage caused by the failure, experts pointing.