Geely FC. Manual part — 62
Geely FC. Manual part - 62
Malfunction display of SRS could confirm originally by the flash of indicating light, detailed information
could be gained by malfunction diagnostic tool.
a. Safety airbag indicating light is driven by ECU, all malfunction displays are finished by ECU. After
working voltage is supplied for safety airbag controller (KD4.1) by battery, safety airbag controller
(KD4.1) illuminates indicating light to check SRS. To notify driver that there are some malfunctions
in system, indicating light will illuminate for long time after working voltage is supplied. If existing
SRS does not have any malfunction, indicating light will close after illuminating for five seconds
after ignition on. In original phase, safety airbag controller (KD4.1) does not prepare to check the
impact and stop the unfold until the wire of safety airbag controller (KD4.1) is reliable.
After ignition switch is turned to “ON” gear, the display type of indicating light when there is no any
malfunction in SRS is:
Assembling malfunction information of subassembly could see follow table 1.
Table1: Assembling malfunction information indicating table for airbag subassembly
Schematic drawing for slow flash indicating light
Supplemental restraint system--Malfunction treatment
245
Ignition switch “ON”
Illuminate
Extinguish
Number
Malfunction type
Slow flash times (N times)
Remark
1
Igniter at the side of driver happens short circuit
3
2
Igniter at the side of driver happens open circuit
4
3
Igniter at the side of driver connects grounding
5
4
Igniter at the side of driver connects battery
6
5
Igniter
at the side of passenger happens short circuit
7
6
Igniter
at the side of passenger happens open circuit
8
7
Igniter
at the side of passenger connects grounding
9
8
Igniter at the side of passenger connects battery
10
9
Safety belt at the side of driver happens pre-tightening malfunction
11
10
Safety belt at the side of passenger happens pre-tightening malfunction
12
12
Impact output interface happens malfunction
or wrong explosion
of airbag subas-
sembly will make
big hurt for human,
i t s w a r n i n g r e a -
sons should be di-
vided detailedly.
Inner malfunction information could see following table 2.
Table 2: ECU inner malfunction information indicating table
Schematic drawing for fast flash indicating light
Schematic drawing for “short, short, long and short” malfunction
If happening the situations above, it is necessary to turn off key switch of automobile at first, then turn on key
switch and start it again, if information hint could not be removed, it is necessary to change ECU.
Supplemental restraint system--Malfunction treatment
246
Number
Malfunction type
Fast flash type
Remark
1
Electronic acceleration offset malfunction
Short, short, short and long
0001
2
Electronic acceleration self-checking malfunction
Short, short, long and short
0010
3
SCM inner RAM is wrong
Short, short, long and long
0011
4
Inner parameter is wrong
Short, long, short and short
0100
5
Inner malfunction or acceleration storage space is full and ignition record has been made. Short, long, short and long
0101
6
Mechanical safety sensor happens malfunction
Short, long, long and short
0110
7
Increased pressure is wrong
Short, long, long and long
0111
8
Ignition driving function is wrong
Long, short, short and short
1000
9
Voltage of ignition voltage F12 and F13 is wrong
Long, short, short and long
1001
10
Other parts are wrong
Long, short, long and short
1010
Supplemental restraint system--Repair
Repair
a. In using process, if happening any malfunction of power supply, it shows the voltage of power supply
is less than 9V or higher than 18V, or the battery is damaged, at this time, it only needs to charge or
change the battery.
b. Use special malfunction diagnostic tool to test.
Malfunction codes approved by safety airbag controller (KD4.1)
Number
Malfunction specification
Remove
1
Ignition circuit 1 (safety airbag at the side of driver), the resistance is too high or open circuit.
OK
2
Ignition circuit 1 (safety airbag at the side of driver), the resistance is too low or short circuit.
OK
3
Ignition circuit 1 (safety airbag at the side of driver), connects with the grounding
OK
4
Ignition circuit 1 (safety airbag at the side of driver), connects with power supply
OK
5
Ignition circuit 2 (safety airbag at the side of passenger), the resistance is too high or open circuit.
OK
6
Ignition circuit 2 (safety airbag at the side of passenger), the resistance is too low or short circuit.
OK
7
Ignition circuit 2 (safety airbag at the side of passenger), connects with the grounding
OK
8
Ignition circuit 2 (safety airbag at the side of passenger), connects with power supply.
OK
9
Ignition circuit 3 (pre-tension safety belt at the side of driver), the resistance is too high or open circuit.
OK
10
Ignition circuit 3 (pre-tension safety belt at the side of driver), the resistance is too low or short circuit.
OK
11
Ignition circuit 3 (pre-tension safety belt at the side of driver), connects with the grounding
OK
12
Ignition circuit 3 (pre-tension safety belt at the side of driver), connects with the power supply
OK
13
Ignition circuit 4 (pre-tension safety belt at the side of passenger), the resistance is too high or open circuit.
OK
14
Ignition circuit 4 (pre-tension safety belt at the side of passenger), the resistance is too low or short circuit.
OK
15
Ignition circuit 4 (pre-tension safety belt at the side of passenger), connects with the grounding
OK
16
Ignition circuit 4 (pre-tension safety belt at the side of passenger), connects with power supply
OK
17
Voltage of power supply is too high
OK
18
Voltage of power supply is too low
OK
19
Malfunction of indicating light connects with power supply or bulb is short circuit.
OK
20
Malfunction of indicating light connects with the grounding or filament is open circuit.
OK
21
Lack/wrong calculation rule parameters
No (change safety airbag
controller (KD4.1))
22
Front impact has been recorded
No (change safety airbag
controller (KD4.1))
23
Communication malfunction
OK
24
Inner malfunction
No (change safety airbag
controller (KD4.1))
25
Impact output (oil pump) pin connects with the grounding
OK
26
Impact output (oil pump) pin short connects with power supply
OK
27
Impact output (central control door lock) pin connects with the grounding
OK
28
Impact output (central control door lock) pin connects with power supply
OK
29
Pre-tension safety belt ignites independently
OK, but most is five times
30
Pre-tension safety belt ignites six times independently
No (change safety airbag
controller (KD4.1))
247
there are some malfunctions, indicating light will indicate them. If exterior malfunctions are historical,
after they are removed, indicate will disappear.
one displayed or historical malfunction is only set up again by server. Inner malfunction or “impact
record” of safety airbag controller (KD4.1) could not be set up again, in this situation, it is necessary to
change safety airbag controller (KD4.1).
(3) micro controller, independent indicating light illuminates.
Microprocessor having obvious malfunction state could not work, so it could not control the work of indicat-
ing light. In this situation, indicating light will illuminate directly by applicable circuit without considering the
micro-processor, liking that shown in following:
The battery providing electricity for safety airbag controller (KD4.1) disables: indicating light illumi-
nates by the automatic light driving function.
Inner working voltage loses: indicating light illuminates usually.
New setup caused by the unsuccessful watchdog trigger: indicating light flashes
Micro-processor does not work: indicating light illuminates usually
Insert of connecter of safety airbag controller (KD4.1) is wrong: indicating light illuminates usually by
short circuit stick.
Take example to specify diagnostic step:
If finding indicating light of safety airbag illuminates usually, even if it extinguishes at last, you could check
by follow step. First is to check the part happening malfunction with diagnostic tool.
Then make by the checking step for corresponding position.
a. If scan result is inner malfunction or safety airbag has exploded, at this time, change the ECU directly.
b. Malfunction has been removed.
Supplemental restraint system--Repair
248
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