2008 GEELY CK light

248An external watchdog can check the operation situation of the microcontroller. The failure of the microcontroller
can trigger the watchdog, which in turn can reset the microcontroller and turn on the warning light.No. List of Trouble s Trouble De sc ription
1 M ic r oc ont r olle rz AD c onve rte r or EEP ROM trouble (in
case of RAM and ROM failure, the
mic r oc ont r olle r w ill r e s e t a nd t he w a r ning
light will light up.)z Activate troublez
Che ck the circ uit troublez Activate troublez Check the circuit troublez Activate troublez Chec k the c irc uit troublez Activate troublez Chec k the c irc uit troublez Activate troublez Check the circuit troublez Activate troublez Check the circuit trouble
6 Ignition volta gez Low
7 Wa tchdog/rese tz Trouble
8 Maximum times of e xplosion of the se a t belt
pretensionerz 6
9 Ene rgy stora ge time (self-support time )z Shortz Ra nge of de via tionz Se nsor not in ste ady modez Se nsor se lfc hec k trouble
11 Continuous abortion of ignition circ uit che c kz None xec ution of c irc ula r diagnostic test
(Repeated algorithm calculation)z Close for 2 or more tha n 2 sec ondsz Sa fe ty se nsor is open c irc uit when
calculating the trouble with algorithm
13 Ignition c urre ntz All the ignition currents are normal
when the current SRS is deployed
14 No c onfirma tion of side SRS ignitionz Eve n if the SRS ECU (HAE2.5) ha ve
received for 5 times the ignition information
during the HSIS ignition cyc le, the side SRS
a irba g ignition c a n not be ve rifie d by SRS
ECU (HAE2.5). Seat belt pretensioner ignition circuit (if realized)
5 P asse nger se a t be lt pre tensione r ignition c irc uit
(if realized) 2 P asse nger airba g ignition c ircuit
3 P asse nger airba g ignition c ircuit (if re a lize d)[Ta ble ] Inte rna l troubles pre dic te d by SRS ECU (HAE2.5)
10 Accelerometer
12 Sa fe ty se nsor6 Driver airbag ignition circuit (if realized)
7 P asse nger airba g ignition c ircuit (if re a lize d) 4

249(3) Clear DTCs
When ECU diagnostic tester (Hi-DSTM) receives the "Clear DTCs" command from the serial interface,
the DTCs stored in ECU will be cleared off. But if an internal DTC is recorded or there is one crash
record, the command will not be executed.
5. Trouble display (Warning light ON)
(1) Light bulb check
When working voltage is supplied to SRS ECU (HAE2.5) through battery, SRS ECU (HAE2.5) lights up
the warning light to check the light bulb. In the initiation stage, the light will be on for 6s at the frequency
of 1Hz and then go out. To give notice of the presence of troubles to the driver, the warning light will
remain on after the working voltage is supplied. If the history troubles happened for less than 5 times, the
warning light will be on for 6s after ignition on and then go out. In the initiation stage, the SRS ECU
(HAE2.5) will not check crash and arrest deployment until the circuit of SRS ECU (HAE2.5) goes
stable.
Thus, after ignition on, the display mode of the warning light is one of the following states displayed in the
initiation stage:
STATE 1) The warning light will remain on if there is crash record or the history records of the trouble
are no less than 5 times. Meanwhile, the warning light will remain on if there is explosion trouble.
STATE 2) The history troubles are no less 1 time but less than 5.
("Low battery voltage" shall be excluded from the total number of the troubles.))
STATE 3) Normal (i.e. there is no explosion trouble or history trouble.))

250(2) Trouble indication
1In case of a trouble, the warning light will indicate. If the external trouble is a history trouble, the indication
will be cancelled. When the history trouble happens for no less than 5 times, the indicator light will remain
on even if there is no more trouble. "Low battery voltage" shall not be counted in the total number of
troubles.
2Only a service worker can reset a displayed or history trouble. The internal troubles of a SRS ECU
(HAE2.5) or the "crash record" of a trouble cannot be reset, in which case the SRS ECU (HAE2.5) shall
be replaced.
(3) Microcontroller-independent warning light on
Microcontroller with definitive troubles cannot fulfill its functions, thus cannot control the warning light. In
this case, the warning light will light up through proper circuit regardless of the microcontroller as stated
below:
yMalfunction of the battery supplying power to SRS ECU (HAE2.5): the warning lights are turned
on continuously by means of the drive function of the selfcheck light.
yLoss of internal working voltage: the warning light remains on.
yReset due to trigger failure of the watchdog: the warning light blinks.
yMicrocontroller out of work: the warning light always lights up.
yIncomplete insertion of SRS ECU (HAE2.5) connector: the warning light remains on by means of
a shorting bar.
The diagnostic procedures can well be illustrated as follows:
If it is found that the SRS warning light remains on, follow the undermentioned procedures to check even if
the light goes out eventually. First, a scan meter is used to check the location of the trouble.
Then£¬go on with the checking in accordance with specific methods and procedures for the correspondent
location.
a. If the result indicates that it is an internal trouble or that the SRS is already detonated, replace the
ECU directly.
b. Troubleshooting.

251Section 2 TroubleshootingI. LIST OF TROUBLES1. SRS warning light OFFDIAGNOSTIC PROCEDURESWhen performing the first diagnostic check, it is advised to shake slightly the harness and connector to see if
there is any discontinuous poor contact in circuit. If there is such a problem, make sure that the connections
of the connector, terminals and wire harness are correct and undamaged. Otherwise, follow these procedures:
(1) Check other wire harnesses and instrument cluster indicator lights
1Turn the ignition switch ON.
2Any other light on?
Yes: turn the ignition switch to LOCK, and continue with the next step.
No: check the power supply and ground system (fuse) of the instrument cluster, and continue with step 5.
(2) Check light bulb
CAUTION:
Mishandling of SRS components may release unexpectedly airbag and seat belt pretensioner, probably lead-
ing to a serious accident. Read the service cautions before handling a SRS component.
1Turn the ignition switch to LOCK.
2Disconnect the negative (-) terminal cable from the battery and wait for at least 60s.
3Remove the instrument cluster.
4Measure and see if the two pins of the SRS warning light is triggered.
Yes: continue with next step.
No: replace the bulb of the warning light.
Trouble Che c king Status P ossible Ca use
·Loss of voltage (fuse c irc uit bre a k)
·Instrument cluster trouble
·Trouble of wire harness between instrument
cluster and ECU SRS warning light OFF SRS wa rning c ircuit trouble1 SRS warning light is OFF SRS wa rning c irc uit trouble. No. Trouble shooting Ite ms De sc ription
2 SRS warning light re mains on SRS wa rning circ uit trouble or exte rna l trouble.

252(3)Check the connection between ECU and instrument cluster
1Turn the ignition switch to LOCK.
2Disconnect the negative (-) terminal cable from the battery.
3Disconnect the connector of instrument cluster.
4Check if the related circuits of the warning light are connected or not.
Yes: continue with next step.
No: replace the wire harness, and then continue with step 5.
2. SRS warning light remains on.DIAGNOSTIC PROCEDURESTo begin the check, first use special diagnostic instruments and ECU to perform communication diagnosis
and find out the causes of the trouble. If the communication fails, continue with the following procedures:
(1) Check battery
1Check battery voltage.
2Is voltage higher than 9V?
Yes: continue with next step.
No: Insufficient battery supply. Check the charging/discharging system, and then continue with step (5).
(2) Check the continuity of the wire harness between ECU and instrument cluster
1Turn the ignition switch to LOCK.
2Disconnect negative (-) terminal cable from the battery.
3Open the guard plate of the central passage.
4Disconnect the connector of the instrument cluster.
5Connect the negative (-) terminal cable of the battery.
6Turn the ignition switch ON.
7Check whether the voltage of the connector terminal of the instrument is 12V (power supply and instrument
connecting wire).Trouble Che cking Sta tus P ossible Causez Insufficient battery supplyz ECU internal troublez SRS wa rning light trouble of instrument c luste rz Improper connection of ECU connectorz P oor c ontac t of instrume nt c luste r c onne c torz Ope n circ uit or poor c onta c t of ECU power supply fusez P oor c onne c tion of ECU connec tor te rmina lz P oor conta ct of the wire ha rne ss be twe en ECU
connec tor te rmina l a nd groundz Drive r or pa ssenge r side circ uit trouble of SRS SRS wa rning light
remains onSRS warning light
remains on

253Yes: continue with next step.
No: check the circuit, repair it and continue with step (5).
8Turn the ignition switch to LOCK.
9Check the continuity of the terminal of instrument connector and that of diagnostic interface (check the
two ends of K line).
Yes: continue with next step.
No: repair or replace the wire harness. Continue with step (5).
VMake sure to disconnect the negative terminal cable from the battery and wait for at least 60s.Disconnect
the ECU connector. 11Disconnect the connectors of the instrument cluster 12 Are the connector terminals 5, 7 and 9 and those of instrument cluster continuity?
Yes: continue with next step.
No: replace the wire harness, and then continue with step (5). 13Remove ECU and see whether the terminals are in good condition and whether the shorting bar is
broken.
Yes: replace the ECU.
No: reconnect the ECU connector, and then continue with next step.
(3) Make sure of the nonrecurrence of the trouble after repair
1Turn the ignition switch to LOCK.
2Disconnect the negative (-) terminal cable from the battery and wait for at least 60s.
3Connect all the ECU connectors.
4Connect the connector of driver airbag assembly.
5Connect the connector of passenger airbag assembly.
6Connect the connectors of driver and passenger seat belt pretensioners (vehicle with pretensioner).
7Connect clock spring connector.
8Connect the negative (-) terminal cable of the battery.
9Turn the ignition switch to ON.
VIs the SRS warning light working normal?
Yes: the trouble is eliminated. Explain the repair procedures to the Customer.
No: recheck symptoms of the trouble. Repeat these procedures from the first step if the trouble reoccurs.

262Section 3 Removal & InstallationI. SRS ELECTRONICAL CONTROL UNIT (ECU)1. Operations prior to Removal
(1) Turn the ignition switch OFF.
(2) Remove negative (-) terminal cable of the battery. Put it in a proper position or wrap it up with insulating
tape.
2. Removal procedures:
(1) Remove the central passage side cover plate (or remove auxiliary console).
(2) Remove the connectors to SRS ECU.
(3) Remove ECU.
3. Installation procedures:
(1) Install ECU.
(2) Install the connectors to SRS ECU.
(3) Install the central passage side cover plate (or install auxiliary console).
(4) Connect negative (-) terminal cable of the battery.
4. Key points for Installation:
(1) Install ECU.
(2) Check after installation.
1Turn the ignition switch ON.
2The warning light goes on within 6s, and then goes out.
(3) If the light doesn't go out, check the trouble and eliminate it.NOTICE1. Work must be started 60s after the negative (-) terminal cable is detached from battery. The detachednegative (-) terminal cable shall be protected with insulating tape for insulation.
2. Never attempt to dismantle or repair an ECU. If there is any trouble, replace the ECU with a new one.
3. Prevent the ECU from shock or vibration. If pitting, crack or distortion is found, replace the ECU with
a new one.
4. Every time an airbag is deployed, the ECU shall be replaced with a new one.
5. When disassembling or maintaining the parts around ECU, attention must be given to avoid contacting
the ECU.NOTICE
If the ECU cannot be installed correctly, the airbag will not act normally.

2664. Check after installation
(1) Slightly rotate the steering wheel left and right, make sure that there is no abnormality or noise. (Driver
airbag module, clock spring)
(2) Turn the ignition switch ON.
(3) The warning light goes on within 6s, and then goes out.
(4) The trouble shall be eliminated if the warning light remains on when the ignition switch is turned on or
after it goes out after 6s.IV. CHECKING1. Driver airbag assembly checking
Check the following items and replace the related components of the airbag assembly if any badness is
found. The old components shall be deployed before scrapping.
(1) Check the hood for pitting, crack, distortion, etc.
(2) Check the joint of the wire harness for damage and the terminal for distortion.
(3) Check the case of the gas generator for pitting, crack and distortion.
(4) Check the installation status of the airbag assembly.
2. Check the clock spring
Check the following items, and replace the clock spring if any badness is found.
(1) Check the joint and protecting tube for damage and the terminal for distortion.
(2) Check the case for damage.
(3) Check and see if the joint terminal at the upper end of the clock spring are in conduction with that at the
lower end.
(4) A thin probe shall be inserted from the back of the yellow connector of the clock spring.NOTICE
If there is pitting, crack or distortion, replace the airbag assembly with new one. The old components of the
airbag shall be deployed before scrapping.
The circuit resistance of the airbag assembly (squib) cannot be measured even with a designated tester.Since there is current flowing in the squib, when a tester is involved in measuring the resistance, sometimesthe airbag is unexpectedly deployed in case of static electricity, leading to serious accident.