Great Wall Hover. Instruction - part 24

 

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Great Wall Hover. Instruction - part 24

 

 

Safety airbag-2

Table 1   SRS-ECU stitch description

5.  The maintenance operation must be started after 60 seconds following the removal of negative connection of

accumulator, wrap the negative with insulating tape for insulation.

Due to the capacitance in SRS-ECU to maintain certain power to make the safety airbag release within a certain time after the

power-off of accumulator, the operation must be started after a while to avoid any possible major damaging accident caused

by the safety airbag’s improper release.

6. The parts such as SRS-ECU, safety airbag module as well as clock spring should be removed off and well preserved

providing the temperature is high enough to cause any damage(above93¡æ) in the painting operation.

The failure codes must be debugged with the diagnostic scanner following the repairing of SRS safety airbag system so as to

make alarm lamp work functionally.

Instructions for maintenance

          For your safe operation, please read the following instructions prior to your operation.

1.  The maintenance of SRS safety airbag must be operated under the procedure and directions instructed in this

chapter.

2.  The operation must be done with the test instruments and special tools designated by the chapter.

3.  The following parts must be replaced by new ones providing something wrong with them.

a. SRS safety airbag control unit (SRS-ECU)

b. Clock spring module

c. The driver’s side safety airbag module
d. The passengers’ side safety airbag module.

e. Safety airbag wiring harness.

4. The safety airbag electric principles figure and definitions of connector clips are in Figure 1,SRS-ECU stitch

    definition in Table 1 and the position and form of safety airbag failures indicator lamp in combined instrument in

    Figure 2.

The driver’s side safety airbag, low position

Wire#

Description

Name

Diagnosis request

 

The driver’s side safety airbag, high position

Passengers’ side safety airbag, high position

Passengers’ side safety airbag, low position

 

Diagnosis of serial data I/O (K-line)

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Safety airbag-3

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Safety airbag-4

safety airbag system alarm lamp

impact sensor and diagnosis module

passengers’ side inflation elements and airbag

insulating tape

battery

wire

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Safety airbag-5

Test instrument

Instrument

Name

Utility

diagnostic scanner

The alarm lamp

 keeps illuminating.

Failure

 handling

Debug the

failure codes

Test the systematic failures in

SRS safety airbag system, debug
ECU. failure codes.

The basic failure diagnosis process

The failure code DTC of both present and history-accumulated failures may co-exist.

Caution

The safety airbag alarm lamp flashes for 6 times and then extinguishes when the ignition switch is in ON

       position after the installation of new safety airbag system electronic control unit, which demonstrates the

       normal function of  SRS safety airbag system. In this case the system does not need to be tested, otherwise it

       should be diagnosed and repaired.

If the alarm lamp does not illuminate when the ignition switch is in ON position, repair the alarm lamp relevant

       circuit and, then further operate to get it into work.

Scan the ECU by connecting

the scanner with k-line

Failure detection

The test for SRS safety airbag alarm lamp

SRS-ECU will execute a series of diagnosis and test to check whether the function of airbag system is prepares. The check can

prevent the restriction system from mis-explosion and ensure the necessary explosion during collision. If found the failure,

SRS-ECU will save a proper failure code and light the alarm lamp to indicate a failure status for the convenience of maintenance.

If connect the pin 2# wire 488#  (diagnosis request wire) on the diagnosis port to the ground (wire 50#) for more than 2s, the
safety airbag alarm lamp will flash the code. For detailed position refer to following figure.

safety airbag system alarm lamp

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Safety airbag-6

brown white

red

diagnosis plug

black

Failure judgment

1.

Failure record (failure code storage)

When ECU determines the error through the cyclic diagnosis and test, SRS-ECU should saves the corresponding code, first

judgment time, final judgment time and number of occurrence in EEPROM.

RS-ECU can stores 6 failures at most, under voltage failure and two collision records (front and side).

Failure code approved by SRS-ECU

Serial No. 

Failure description 

Debugging 

Ignition loop 1 (driver’s front airbag), resistance is too high or open-circuit. 

Can 

Ignition loop 1 (driver’s side front airbag), resistance is too low or short-circuit 

Can 

Ignition loop 1 (driver’s side front airbag), grounding 

Can 

Ignition loop 1 (driver’s side front airbag), connected to power supply 

Can 

Ignition loop 2 (passenger side front airbag), resistance is too high or open-circuit. 

Can 

Ignition loop 2 (passenger side front airbag), resistance is too low or short-circuit 

Can 

Ignition loop 2 (passenger side front airbag), connected to power supply 

Can 

Ignition loop 2 (passenger side front airbag), connected to power supply 

Can 

9 Power 

voltage 

is 

high 

Can 

10 Power 

voltage 

is 

low 

Can 

11 

Alarm light failure, connected to power supply or lamp is short-circuit 

Can 

12 

Alarm lamp is failure- grounding or filament is open-circuit. 

Can 

13 

Shortage/failure of algorithm parameter 

Cannot (replace the 

SRS-ECU)  

14 

The front collision is recorded 

Cannot (replace the 

SRS-ECU)  

15 Communication 

failure 

Can 

16 

Internal failure (refer to following table)   

Cannot  (replace the 

SRS-ECU)  

 

 

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Safety airbag-7

              Description of flash code

The failure code transmission is completed by SRS-ECU’s input to the defined diagnostic scanner through the maintenance system’s

serial data interface. (X-431 diagnostic scanner) Failure code of diagnosis

 

Failure 

Failure code 

Flash code 

1 No 

storage 

error 

 

$12 

Front airbag driver’s, high resistance 

$9,021 

$21 

Front airbag driver’s , low resistance 

$9,022 

$22 

Front airbag driver’s,    short-circuit of GND 

$9,024 

$24 

front airbag driver’s , short –circuit of VBATT 

$9,025 

$25 

front airbag passenger, high resistance 

$9,015 

$15 

front airbag passenger, low resistance 

$9,016 

$16 

front airbag passenger , short-circuit of GND 

$9,018 

$18 

Front airbag passenger , short-circuit of VBTT 

$9,019 

$19 

10 

High voltage of battery   

$9,031 

$31 

11 

Low voltage of battery 

$9,032 

$32 

12 

Failure of alarm lamp 

$9,061 

$61 

13 

Internal failure (replace SDM)   

$9,071 

$71 

14 Front 

collision 

record 

$9,051 

$51 

15 

Side collision driver’s record 

$9,056 

$56 

16 

Side collision passenger record 

$9,057 

$57 

17 

Retightened safety belt collision 

$9,058 

$58 

18 

Beyond the allowable repeat usage times 

$9,054 

$54 

 

3. Interior failure

The micro controller can test the following items not only in starting detection but also in cyclic diagnosis detection.
a. Ignition circuit triggers the transistor: The high-side transistor is detected not only in the starting detection but also in the

circulation diagnosis. But for the low-side transistor is opened when is connected to power supply directly, so the low-side

transistor only can be detected in the starting detection to avoid the misexplosion.

b. The ignition voltage is provided by the booster transformer.

c. The acceleration sensor is detected by itself when start the detection.

d.  Allowable deviation scope of acceleration sensor in circulation diagnosis.

e.  Micro controller includes (AD converter, ROM, RAM etc.)

f.  Status of safety sensor

    Cautions:

Connector of explosion tube circuit has the short-circuit bar. When the connector is not connected, the end (+) of

explosion tube is connected to end (-) directly to prevent the failure outspread caused by static. When the connector

is bas and short-circuit bar is connected, the failure may not be eliminated.

An external watch dog can detect the operating status of micro controller. It can trigger the watchdog when the micro con

troller has failure. The watch dog will reset the micro-controller and light the alarm lamp.

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Safety airbag-8

       Internal failure determined by SRS-ECU

Serial 

No. 

List of failure 

Description of failure 

1 Micro-controller 

 

AD converter or EEPROM is faulty (the micro controller will be reset 
and alarm lamp is light when the RAM has failure.)   

Driver’s front airbag ignition loop   

Enable the failure   
Measure the failure of loop     

 

Passenger front airbag ignition loop   
 (if realized)  

Enable the failure   
Measure the failure of loop   

Seat safety belt preloaded ignition loop   
(if realized)   

Enable the failure   
Measure the failure of loop   

Passenger side safety belt preloaded 
ignition loop  (if realized)  

Enable the failure   
Measure the failure of loop     

Driver’s side airbag ignition loop   
 (if realized)  

Enable the failure   
Measure the failure of loop     

Passenger side airbag ignition loop   
  (if realized )   

Enable the failure   
Measure the failure of loop     

Maximum times of explosion of safety 
belt pre-tightener 

Reach the maximum value 6 

Holding time of ECU energy     
(self-supply time)   

Too short 

10 Accelerometer 

 

Deviation range 
Sensor not in constant, stable model 
Sensor tests the failure itself 

11 

The measurement of ignition loop is 
rejected continuously   

No cycling diagnosis test       (duplicated calculation) 

12 Safety 

sensor 

 

Calculate the safety sensor open-loop using the method that power-off 
for 2 or more than 2 seconds is considered as passing   

13 

Initial firing current   

All initial firing current in normal status when the front airbag releases. 

14 

The ignition of side airbag is not   
determined. 

Though SRS-ECU has received ignition information for 5 times during 
HSIS cycling ignition, the ignition can not be determined due to the side 
safety..  

 

Debug the failure codes

 Approach 1. The failure codes will be debugged following the ECU’s receipt from the X-431 diagnostic tester of the debugging

failure codes order through the serial interface, however, if an internal failure code is recorded or one impact is

recorded, the debugging will not be executed.

Approach 2. Ground 488# line for 5 times in 10 seconds to debug the failure codes.

Failure status display  (alarm lamp keeps illuminating).

1. Bulb test

SRS-ECU will light the alarm lamp in order to test the bulb after working voltage is provided to it through the battery. The lamp

will flash for 6 times and then extinguish at 1HZ in the initial phase. The alarm lamp will keep illuminating after the working

voltage is provided in order to inform the driver’s system failures. The alarm lamp will keep illuminating for 6 seconds after the

ignition on and then be extinguished if the history-accumulated failures are less than five times. In the initial phase, SRS-ECU will

not prepare to test impact and stop release till the circuit is stable. Therefore, alarm lamp’s display manner will be one of

following projects in the initial phase. (Table 4.9).

Project 1. If the impact is recorded or the number of history accumulated failures is or more than 5,the alarm lamp will keep

       illuminating, simultaneously, it will also keep illuminating if there is a possible explosion failure.

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Safety airbag-9

Project 3   functional working (neither possible explosion failure or historical failure).

Table 4.9 indicator lamp’s activities after ignition

2.Failure indication

The alarm lamp will indicate it in case any failure arises. If the external failure is a historical one, the indication will be called off. If

the number of history-accumulated failures is or more than 5, the alarm lamp will keep illuminating albeit no failure emerges. The

case of low power will be excluded.

 A displayed or historical failure can but only be reconfigured by the service personnel. An internal failure or impact record can not
be reconfigured, in these cases, SRS-ECU must be replaced.

3.Micro controller-independent alarm lamp illumination

The micro-controller in clear failure status can not work therefore can not control the alarm lamp. In this case, the alarm lamp

will be directly lighted via suitable circuit despite of the micro-controller. As following,

The battery for SRS-ECU fails, the alarm lamp will be continuously lighted through the lamp drive function.

b. No internal working voltage, the alarm lamp keeps illuminating

c. Reconfiguration caused by watchdog’s trigging failure, the alarm lamp flashes.

d. No work of micro-controller, the alarm lamp keeps illuminating
e. Incomplete plugging-in of SRS-ECU connector, the alarm lamp keeps illuminating via shoring bar Next explain the diagnostic

    procedure by taking some examples

If the alarm lamp is found keeping illuminating, please test it according to the following procedure even it extinguishes finally.

First test the failure region with the scanner followed by the test in the failure region with the corresponding approaches and

steps.

a If an internal failure or the explosion of safety airbag is scanned, replace the SRS-ECU

b.Troubleshooting

Project 2. The number of history- accumulated failures is or more than one and less than 5. (The case of low power is excluded)

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Safety airbag-10

1. Extinguishments of safety airbag system alarm lamp

Troubleshooting

Extinguishments or normal-light of alarm lamp

NO. Troubleshooting 

item 

Description 

The warning lamp of safety airbag 

system is not displayed.   

Safety airbag system warns circuit failure 

The warning lamp of safety airbag 

system is light normally.   

Safety airbag system warns circuit failure or external 

failure. 

 

Extinguishments of safety airbag system alarm lamp 

Test status 

Safety airbag system warns circuit failure. 

Possible causes 

No voltage (fuse shutoff) 

Combined instrument failure 

Failure of wiring harness between instrument cluster and ECU unit 

 

Diagnostic procedure

When first carry out failure test, joggle the wiring harness and plug to test whether there is periodical bad contact in the circuit, if
it so, please confirm whether the plug, terminal and wiring harness well connected and in good condition. If it is not any of previous

cases, operate according to the following steps.

Procedure 

Test 

Operation 

Yes 

Place the ignition switch in LOCK 

position followed by next step 

Test other wiring harness and instrument cluster 

indicator lamp 

·

place the ignition switch in ON position 

·

light other alarm and indicator lamps 

No 

Test the instrument cluster power-supply 

system and grounding system (fuse), then 

go to step 5. 

Yes Next 

step 

Bulb test 

Warning: 

Incorrect handling with the safety airbag system 

units will cause the safety airbag’s improper 

release and pretension of safety belt, which will 

lead to serene accidents. Please read safety airbag 

service warning before handling the safety airbag 

units. 

·

Place the ignition switch in LOCK position。 

·

shut off accumulator negative line and keep the 

  status for at least 60 seconds. 

·

Remove the combined instrument. 

Test the connection between the two   

corresponding stitches of safety airbag alarm lamp 

No 

 

 

 

 

 

 

Replace the bulb of alarm lamp. 

 

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Safety airbag-11

2. Normal-light of safety airbag system indicator lamp

Normal-light of safety airbag system alarm lamp 

Test status 

Normal-light of safety airbag system alarm lamp 

Possible causes 

Insufficient battery voltage 

ECU internal failure   

Combined instrument safety airbag alarm lamp failure 

ECU plug misconnects 

Combined instrument plug bad-contact   

ECU power-supply fuse shutoff or bad contact 

Misconnection of ECU plug terminal 

Bad contact between ECU plug terminal and grounding wiring 

harness. 

Driver’s or passengers’ side safety airbag circuit failure. 

 

Procedure 

Test 

Operation 

Yes Next 

procedure. 

Test the wiring harness connection between ECU 

unit and instrument cluster. 

·

Place the ignition switch in LOCK position。 

·

shut off accumulator negative line 

·

shut off the instrument cluster plug 

·

test the connection between alarm lamp circuit 

and its relative circuits 

No 

Replace the wiring harness and get into 

step 5 

 

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Safety airbag-12

Begin the test with diagnostic communication with special diagnostic device (X-431 diagnostic tester) and ECU
to find out the failure causes, do the next test providing communication is not successful.

Procedure 

Test 

O peration 

Yes Next 

procedure 

Test the battery   

Test the battery voltage 

Is the voltage higher 9V? 

No 

Insufficient battery supply. 

Test the charging/discharging 

system, then go to step 5. 

Yes Next 

step 

Test the wiring harness connection between ECU and 

combined instrument. 

Place the ignition switch in LOC K position。  

Shut off the battery negative. 

Open the central channel guard plate. 

Shut off the instrument combined connector clip 

Connect the negative of battery 

Place the ignition switch in ON position. 

Check whether the instrument connector clip terminal 

voltage is 12V(power supply and instrument line) 

No 

Check the circuit and continue the 

operation according to step 5. 

Yes Next 

step 

Place the ignition switch in LOC K position。  

Check the connection of corresponding terminals between 

instrument connector clip and diagnostic interface 

(diagnose the two ends of K-line) 

No 

Repair or replace the wiring 

harness and continue according to 

step 5 

Yes Next 

step 

Make sure the shutoff of accumulator negative line and 

keep the status for at least 1 minute.       

Shut off ECU connector clip 

Shut off the instrument cluster plug. 

Connect the ECU plug terminal 5,7,9 and instrument 

cluster plug? 

No 

Replace the wiring harness and 

step 5 

Yes Replace 

ECU 

Remove EC U to check the condition of terminal and 

whether the shorting bar is broken. 

No 

Reconnect EC U connector clip 

and next step. 

Yes 

Troubleshooting followed by the 

explanations to customers upon 

the repairing procedure. 

 

Make sure that the failure will never reoccur after 

repairing. 

Place the ignition switch in LOC K position。  

Shut off accumulator negative line and keep the status for 

at least 1 minute. 

Connect all ECU plugs 

Connect the driver’s side safety airbag combined 

instrument plug 

Connect the passengers’ side safety airbag combined 

instrument plug 

Connect the driver and passengers’ side pretension safety 

belts plugs. 

(Vehicles with pretension safety-belts) 

Connect clock spring plug 

Connect the accumulator negative line 

Place the ignition switch in ON position 

Does the safety airbag alarm lamp work functionally? 

No 

Retest the failure symptoms; 

repeat from step 1 if the failure 

reoccurs. 

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Safety airbag-13

Internal failure

Failure code   

$9071  

SRS safety airbag system unit internal failure 

Test condition   

Warning 

The test condition of this failure is the failure code that may not emerge before the test, 

DTC conducts the test, and the preparatory work must be done before the test because the 

damage to working personnel or system may be caused by the incorrect operation during the 

test. 

SRS safety airbag system electronic-control unit internal circuit failure. 

Possible causes   

SRS safety airbag system unit internal failure 

Operation  

With regard to replacing SRS safety airbag system unit, take references in the removal/installation of safety airbag system 

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Safety airbag-14

Power-supply

 

Failure code 

$9032 

Low power-supply voltage for SRS safety airbag system electronic-control unit   

Test condition 

Warning 

The test condition of this failure is the failure code that may not emerge before the test, DTC conducts the test, 

and the preparatory work must be done before the test because the damage to working personnel or system 

may be caused by the incorrect operation during the test. 

The voltage for SRS safety airbag system unit connector clip is stitch 5 and 6 is under 9V 

Possible 

causes 

Accumulator low voltage 

Failure with the wiring harness between accumulator and SRS safety airbag system electronic-control unit 

Procedure Test 

 

Operation 

Yes   Next step 

Check accumulator   

Test accumulator voltage   

Is the voltage above 9V 

No   Accumulator low voltage, test the 

recharging/discharging system 

Yes   Next step 

Check the wiring harness between accumulator and fuse 

panel 

Remove fuse panel without releasing the connector clips 

Place the ignition switch in ON position 

Test the potential of two fuse corresponding contactors, the 

potential above 9V? 

No   Check the wiring harness 

Yes   Next step 

Check the wiring harness between fuse panel and SRS 

safety airbag system unit connector clip 

Warning:    

If not correctly handled, the safety airbag module as well 

as pretension safety belt may possibly be trigged, released 

and tensioned, thus make serene damage to people. 

Therefore, please carefully read the repairing warning 

before trouble handling. Please take references in safety 

airbag system repairing warning   

Place the ignition switch in LOCK position 

Release accumulator negative wire and wait for 1 minute 

plus 

Remove steering pillar shell 

Release the clock spring connection clips 

Remove the PAB trim cover, glove box (passengers’ side 

safety airbag is under the trim cover) 

Release passengers’ side safety airbag module connector 

clips 

Release all SRS safety airbag system unit connector clips 

Install back the accumulator negative wire,   

Place the ignition switch in ON position 

Is the potential of SRS safety airbag system unit connector 

clips stitch 5,6(grounding) above 9V? 

No    Replace wiring harness 

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Safety airbag-15

 

Yes 

Present failure codes 
Replace SRS safety airbag system unit   
See he removal/installation of SRS 
safety airbag system unit 
History accumulated failure codes 
The end of failure diagnosis 

Place the ignition switch in LOCK position   
Release accumulator negative wire and wait for 1 minute 
plus 
Remove the left trim cover 
Shut off SRS safety airbag system unit translation 
connector clips 
Install back the accumulator negative wire, place the 
ignition switch in ON position 
Is the potential of SRS safety airbag system unit connector 
clips stitch 5,6(grounding) above 9V? 

No Replace 

wiring 

harness 

Drive side failure 

Failure code 
$9021 
$9022 
$9024 
$9025 

Driver’s side safety airbag failure (high or low resistance, shorting grounding, etc.) 

Test 

condition 

Warning 
If not correctly handled, the safety airbag module as well as pretension safety belt may possibly be trigged, released 
and tensioned, thus make serene damage to people. Therefore, please carefully read the repairing warning before 
trouble handling. Please take references in safety airbag system repairing warning   
Driver’s side safety airbag 
The resistance between the SRS safety airbag system connector clips connectors not within the designated scope 
SRS safety airbag system driver’s side airbag relative wiring harness shorting or shutoff 

Possible 

causes 

Driver’s side safety airbag module failure 
Clock spring internal failure 
Failure of circuit connector clips between clock spring and SRS safety airbag system electronic-control unit   
Shutoff or shorting of wiring harness between clock spring and SRS safety airbag system electronic-control unit. 
Misconnection of SRS safety airbag system driver’s side airbag generator connector clip 

Procedure 

Test 

Operation 

Normal 

Next step 

Check the clock spring   
Warning 
If not correctly handled, the safety airbag module may possibly be 
trigged and released thus make serene damage to people. Therefore, 
please carefully read the repairing warning before trouble handling. 
Please take references in safety airbag system repairing warning. 

Are the relative parts of clock spring normal? (The relation between 

stitches, unnecessary shutoff or shorting?) if the present clock spring can 
be replaced by a better one. 

Abnormal 

Replace the clock spring 
Take references in the 
removal/installation for 
safety airbag system and 
clock spring 

Replace the driver’s side 
safety airbag module 
T k

f

i

th

Confirm the failure in driver’s side safety airbag module or other parts. 
R l

th DAB

d l

ith b tt

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Safety airbag-16

Yes Next 

step 

Confirm the failure in clock spring or other parts 
configure the special tools fuel and temperature diagnostic instrument 
at 2Ω position   
Install back the accumulator negative wire 
Place the ignition switch in ON place 
Any failure code in display? 

No 

Replace clock spring 
Take references in the removal 
and installation for safety airbag 
system and clock spring. 

Normal 

Replace SRS safety airbag 
system unit; take references in 
removal/installation of SRS 
safety airbag system unit. 

Check the wiring harness between clock spring and SRS safety airbag 
system electronic-control unit 
Place the ignition switch in LOCK position   
Release accumulator negative wire and wait for 1 minute plus 
Remove PAB trim cover, glove box (passengers’ side safety airbag is 
under the trim cover) 
Release the passengers’ side safety airbag module connector clip 
Release all SRS safety airbag system unit connector clips 
Check whether the following troubles are with the harness between 
connector clips terminals of SRS safety airbag system unit and clock 
spring  
Grounding  
Power-supply shorting 
Shutoff  
Is the previous wiring harness normal? 

Abnormal 

Replace the wire harness 

Normal Next 

step 

Check the clock spring connector clip 
Remove the steering pillar shell 
Release the clock spring connector clip 
Is the clock spring connector clip normal? 

Abnormal 

Replace the wiring harness or 
connector clips 
 

Normal Next 

step 

Check clock spring   
Remove clock spring   
Take references in removal/installation of safety airbag system as 
well as clock spring 
Check clock spring   
Take references in the test for safety airbag system and clock spring. 
Is the clock spring normal? 

Abnormal 

Replace clock spring 
Take references in the 
removal/installation of safety 
airbag system and clock spring. 

Normal Next 

step 

Check the wiring harness between clock spring and SRS safety airbag 
system electronic-control unit 
Place the ignition switch in LOCK position 
Release accumulator negative wire and wait for 1 minute plus 
Remove PAB trim cover, glove box (passengers’ side safety airbag is 
under the trim cover) 
Release the passengers’ side safety airbag module connector clip 
Release all SRS safety airbag system unit connector clips. 
Check whether the following troubles are with the harness between 
connector clips terminals of SRS safety airbag system unit and spring 
clock. 
Grounding  
Power-supply shorting 
Shutoff  
Is the previous harness normal? 

Abnormal 

Replace clock spring 
Take references in the 
removal/installation of safety 
airbag system, and clock spring 

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Safety airbag-17

   

Passengers’ side failure 

 

Failure code 

$9015 
$9016 
$9018 
$9019 

Passengers’ side safety airbag module (high or low resistance or shorting grounding) 

Test condition 

Warning  

If not correctly handled, the safety airbag module as well as pretension safety belt may possibly be 

trigged, released and tensioned, thus make serene damage to people. Therefore, please carefully read the 
repairing warning before trouble handling. Please take references in safety airbag system repairing warning 
If with passengers’ side safety airbag failure 
The resistance between SRS safety airbag system unit connector clip stitch 13 and stitch 14 not within the 
designated scope. 
The wiring harness shorting between safety airbag system unit stitch 13 and stitch 14 
Open loop between SRS safety airbag system unit connector clip stitch 13 and stitch 14,   

Possible causes 

Passengers’ side safety airbag module failure 
The failure of connector clip between passengers’ side safety airbag module and SRS safety airbag system 
electronic-control unit 
The failure of connector clip between SRS safety airbag system unit and grounding jumper. 
The circuit shutoff or shorting between passengers’ side safety airbag module and SRS safety airbag system 
electronic-control unit   
The circuit shutoff or shorting between SRS safety airbag system unit and grounding jumper 
SRS safety airbag system unit failure 

Procedure 

Test  

Operation  

 

Yes Next 

step 

 

Is the vehicle with passengers’ side safety airbag module 

No Step 

Present failure code 
Next step

Check passengers’ side safety airbag connector clips 
Warning

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