Lifan 620. Manual — part 45

Table 3-18

Fault

ABS works abnormally

Cause

① Sensor is damaged

② Sensor is not properly installed

③ Foreign material adheres to sensor

Wire harness of

④

sensor is broken

Gear ring is broken

⑤

Wheel axle is broken

⑥

HCU of ABS is broken

⑦

ECU of ABS is broken

⑧

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Table 3-19

Fault

Brake pedal play is too long

Cause

① Parking brake is not properly adjusted ② Brake fluid leaks

③ Friction plate of brake is severely worn

Normally closed valve can not be closed tightly

④

Air is in the system

⑤

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Table 3-20

Fault

No fault code output (unable to communicate with fault diagnostic instrument)

Cause

Fault

①

diagnostic instrument is broken

② Fuse is blew out

③ Diagnosis wire is broken or connector is loose

ECU is broken

④

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V. Exhaust and Filling

1. Regular operation procedures (Fig. 3-19).

2) C/T is between 90 ~ 180 seconds: repeat the process of solenoid valve working for 2

seconds and then stopping for 2 seconds;

3) C/T is above 180 seconds: set total working time of solenoid valve below 90 seconds.

3. Notes on exhaust and oil filling

(1) When filling brake oil, if not to maintain the filling pressure for a certain period, the oil

level of the oil can will fall after finish of filling. As a result, additional brake oil or filling

pressure for a certain period is necessary.

(2) Usually the marked time of regular operation is the cycle time.

(3) As the inside of spare HECU is wet, exhaust mode operation is not necessary

(exhaust mode operation is defined in item 5 (6)); exhaust can be carried out to all

wheels directly (in order to meet performance and pedal sentience, exhaust mode

operation is preferred).

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