Diagnosis & Fault Clearing; Self-Diagnosis Of Srs Warning Lamp Circuit; Read Out Fault - Lifan 620 Maintenance Manual

Section II Diagnosis & Fault Clearing
LF7162 air bag system can carry out self-diagnosis, and the basic diagnostic procedure is as
follows:
I. Self-diagnosis of SRS warning lamp circuit
1. Turn the ignition switch to position ACC or ON, and check SRS warning lamp for illumination.
2. The system is ok if the warning lamp keeps light for about 5s and then dark for over 5s.
3. The continuous illumination of the warning lamp indicates that single fault or multiple faults have
been detected, then read out DTC and clear off the faults as per part II in this section.
4. If SRS warning lamp illuminates sometimes after connected with the ignition switch for 5s, or
SRS warning lamp illuminates again even the ignition switch has been turned to position LOCK,
check SRS warning lamp circuit for short circuit as per Section 2.5.
II. Read out fault
Read out the fault by special hand-held diagnostic instrument
(1) Connect to the fault diagnostic interface of the vehicle.
(2) Read out the fault as per the indication shown in the diagnostic instrument, as shown in DTC
Table 5-1
Electronic Control Unit (ECU) Internal Fault
Configuration Fault
Driver Airbag Resistance High
Driver Airbag Resistance Low
Driver Airbag Short to GND or Cross Coupling
Driver Airbag Short to Battery
Passenger Airbag Resistance High
Passenger Airbag Resistance Low
Passenger Airbag Short to GND or Cross Coupling
Passenger Airbag Short to Battery
Driver Belt Pretensioner Resistance High
Driver Belt Pretensioner Resistance Low
Driver Belt Pretensioner Short to GND or Cross Coupling
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DTC Table 5-1
DTC Description
275
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Bosch
Lifan
DTC in
DTC
EEPROM
tbd 9000
tbd 9001
tbd 8026
tbd 8022
tbd 8024
tbd 8025
tbd 8017
tbd 8016
tbd 8018
tbd 8019
tbd 8065
tbd 8064
tbd 8066