Lifan 620. Manual — part 68

6. SRS warning lamp
SRS warning lamp can be observed in the instrument cluster, as shown in Fig. 5-6.

III. Safety rules for air bag maintenance

During the

maintenance of air bag system, unexpected deployment may occur if correct operation

procedure is not carried out, which shall lead to serious accident. Beyond that, the air bag may fail
to deploy if the maintenance operation is incorrect. Therefore, please carefully read the following
notes and take correct operation procedure.

1. Inspection, installation and maintenance shall be carried out by professionals.
2. Inspecting lamp, common voltmeter and ohmmeter shall not be used during inspection, and
special voltmeter and ohmmeter (minimal 10kΩ/V) shall be used for measuring voltage and

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resistance.
3. Read out the flash DTC (Diagnostic Trouble Code) before removing the battery ground line
when clear off air bag system fault.
4. Remove the negative ground line of the battery before carrying out specific maintenance. Then
wait for over 3min and perform maintenance operation, or the air bag may be unexpectedly
deployed. The negative electrode removed shall be wrapped with insulating tape for insulation.

Note:

Wait for over 3min before carrying out any operation after disconnecting the battery, or the

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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

Passenger Airbag Resistance Low

tbd

8016

Passenger Airbag Short to GND or Cross Coupling

tbd

8018

Passenger Airbag Short to Battery

tbd

8019

Driver Belt Pretensioner Resistance High

tbd

8065

Driver Belt Pretensioner Resistance Low

tbd

8064

Driver Belt Pretensioner Short to GND or Cross Coupling

tbd

8066

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DTC Table 5-1 (Continued)

DTC Description

Lifan

DTC

Bosch

DTC in

EEPROM

Driver Belt Pretensioner Short to Battery

tbd

8067

Passenger Belt Pretensioner Resistance High

tbd

8058

Passenger Belt Pretensioner Resistance Low

tbd

8057

1

2

3

DAB

inexistence

Driver air bag

module

Clock spring

Harness

Air bag ECU

1. Preparation before checking; 2. Check the driver air bag circuit, if

normal, go to the step 3; if not, go to 5; 3. Check the air bag ECU, if

normal, go to 4; if not, renew the air bag ECU; 4. Check the driver

air bag module, if normal, the parts with faults have been recovered;

if not, renew the driver air bag module; 5. Check the clock spring, if

normal, go to 6; if not, renew the clock spring; 6. Check the harness

between the air bag ECU and clock spring, if normal, the parts with

faults have been recovered; if not, repair or renew the harness.

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