Be sure to proceed with airbag related service only after approx. 30 seconds or longer from the time the ignition switch is turned to the LOCK position and the negative (-) battery cable is disconnected from the battery. The airbag system is equipped with a back-up power source to assure the deployment of airbags when the battery cable is disconneted during an accident. The back-uppower is available for approx. 150ms.
When the negative (-) battery cable is disconnected from the battery, the clock and audio system's memory will be wiped out. So before starting work, make a record of the contents of the audio system's memory. When thework is finished, reset the audio system and adjust the clock.
Symptoms of malfunction of the airbag system are difficult to detect, so the diagnostic codes become the most important source of information whentroubleshooting.
When troubleshooting the airbag system, always inspect the diagnostic codes before disconnecting the battery.
Never use airbag parts from another vehicle. When replacing parts, replace them with new parts.
Never attempt to disassemble and repair the airbag modules (DAB, PAB, SAB, BPT), clock spring and wiring in order to reuse them.
If any component of the SRS has been dropped, or if there are cracks, dents or other defects in the case, bracket or connector, replace them withnew ones.
After work on the airbag system is completed, perform an SRS SRI check. The airbag indicator lamp can be triggered by faults in other circuit in some cases. Therefore if the airbag indicator lamp goes on, be sure to erase the DTC codes using the Hi-Scan Pro just after repairing or replacing the troubledparts, including the fuse.
Especially when carring out body welding, never fail to disconnect the battery's negative (-) terminal.
Tool (Number and name) | Illustration | Use |
0957A-34100A Deployment tool |  | Airbag deployment tool PAB, SAB : 0957A-38100 DAB, BPT : 0957A-38500 |
0957A-38000 Diagnosis checker |  | Wring harness checker for each module |
0957A-38200 Dummy |  | Simulator to check the resistance of each wiring harness Dummy adapter PAB, SAB : 0957A-38300 DAB, BPT : 0957A-38400 |
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A. DAB + PAB CAUTION TO AVOID SERIOUS INJURY : ● For maximum safety protection in all types of crashes, you must always wear your safety belt. ● Do not install rearward-facing child seats in any front passenger seat position. ● Do not sit or lean unnecessarily close to the airbag. ● Do not place any objects over the airbag or between the airbag and yourself. ● See the owner's manual for further information and explanation. | B. SUPPLEMENTAL RESTRAINT SYSTEM (AIRBAG) INFORMATION The airbag is a supplemental restraint system (SRS). You must always wear the seat belts. The airbag system condition is normal if the "SRS" lamp in the cluster flashes approximately 6 times after the ignition key is turnedon and then goes out. 1. "SRS" lamp does not light when key is turned on. 2. "SRS" lamp stays lit or flashes continuously. 3. The airbag has inflated. warning Failure to follow the above instructions can result in injury to you or other occupants in the vehicle. See "SRS" section in owner's manual for more information about airbag. |
C. CAUTION : AIRBAG ESPS UNIT Detach connector before unmounting. Assemble strictly according to manual instructions. | D. CAUTION : SUPPLEMENTAL RESTRAINT SYSTEM MODULE To help avoid personal injury due to unwanted inflation, do not service or dispose of this unit without following instructions in the service manual. |
E. WARNING : Contents are poisonous and extremely flammable. Do not probe with electrical devices or otherwise tamper with item in any way. Servicing of this unit to be performed only by authorized personnel. | F. CAUTION : SRS clock spring This is not a repairable part. Do not disassemble or tamper with. If defective, replace entire unit as per service manual instructions. To re-center, rotate clockwise until tight. Then rotate in opposite direction approximately 3 turns and align →←. Failure to follow instructions may render SRS system inoperative possibly resulting in serious driver injury. |
G. CAUTION : SRS Before removal of steering gearbox, read service manual, center the front wheels and remove the ignition key. Failure to do so may damage SRS clock spring and render SRS system inoperative, possibly resulting in serious driver injury. | H. WARNING This car is equipped with a side airbag for each front seat. ● Do not use any accessory seat covers. ● Use of other seat covers could reduce the effect of the system. ● Do not install any accessories on the side or near the side airbag. ● Do not use excessive force on the side of the seat. ● For further information, see owner's manual. |
I. ATTENTION Do not open, remove or put into another vehicles. Doing so carries a risk of malfunction and body injury. | J. ATTENTION SRS VEHICLE This car is equipped with a supplemental restraint system. To provide continued reliability, certain elements of the supplemental restraint system shall be serviced or replaced by authorized dealer ten years after vehicle manufacture date shown on certification label. For further information, seeowner's manual. SIDE AIRBAG This car is equipped with a side airbag system. To provide continued reliability, certain elements of the side airbag system shall be serviced or replaced by authorized dealer ten years after vehicle manufacture date shown on certification label. For further information, see owner's manual. |
DC/DC convertor : The DC/DC convertors of the power supply includes a step up and a step down converter, which provide the firing voltage for six firing circuits and the internal operating voltage. If the internal operatingvoltage falls below a defined threshold a reset is executed.
Arming sensor/safing sensor : The arming/safing sensor built in to the airbag firing circuit has the function of arming the airbag circuit under all required deployment conditions and maintaining the airbag firing circuits unarmed under normal driving conditions. The safing sensor is a dual-contact electromechanical switch which closes if it experiences a deceleration exceedinga specified threshold.
Back-up power : The SRSCM has emergency energy reserves to provide deployment energy for a short period when the vehicle voltage is low or if lost in avehicle frontal crash.
Malfunction detection : The SRSCM continuously monitors the current SRS operation status while the ignition key is turned on and detects a malfunction of the system. The malfunction can be displayed in the form of diagnostictrouble code using Hi-scan.
MIL (Malfunction Indication Lamp) notification : If any fault is detected, the SRSCM sends a signal to the indicator lamp on the cluster to warn thevehicle's driver.
The MIL indicator is the key to driver notification of SRS faults. Verify lamp and SRSCM operation by observing the flashinging 6 times when the ignitionswitch is first turned on.
Malfunction recording : Once a fault occurrs in the system SRSCM records the fault in the memory in the form of DTC and the DTC is erased by Hi-scan.
Data link connector : The SRSCM memory stored is linked through this connector located underneath the driver side crash pad to an external outputdevice such as Hi-scan.
After firing the airbags once, the SRSCM cannot be used again and must be replaced.
Crash output
The crash output is used to control an external device which will unlock the doors in case of a crash. The crash output is specified as follows : 0-200 µA in OFF mode and 200mA in ON mode. During the unlock command the switch isclosed for 200 mS.
