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    3. Special Service Tool (1)

    4. Special Service Tool (2)

    7. FUNCTIONS OF AIRBAG Absorbs kinematics energy of occupants. Protects occupants from interior trims. Protects occupants from broken glass. Reduces occupants neck load by kinematically restraining spin of neck.

    8. SYSTEM

    10. GENERAL MAJOR COMPONENT SRS CM LABLES FOR INFORMATION STEERING COLUMN & WHEEL D.A.B. MODULE P.A.B. MODULE S.A.B. MODULE SEAT BELT PRETENTIONER (Driver & passenger) SRS SRI WIRING HARNESS

    11. OPERATING SEQUENCE CRASH CRASH SENSING IGNITION THE INFLATOR PRODUCE GAS TO DEPLOY AIRBAG BAG DEPLOYING FULL DEPOLYMENT OF THE BAG PROTECT THE FRONT OCCUPANTS VENT GAS (BAG DEFLATION) AIR BAG SYSTEM COMPLETED

    12. AIRBAG - GENERAL

    13. AIRBAG FIRING SEQUENCE The firing circuit for the inflator will be activated in the following sequence for deployment (Tf is the instant at which the deployment decision is made)

    18. AIRBAG MODULE (DAB) Inflator Assembly (Depowered) Mounting plate (Reaction Plate) Module cover (Trim cover) Hidden "H"-pattern tear seam Bag : not coated -- 60 L 2-VENT HOLES

    20. INFLATOR ASSEMBLY (DRIVER'S SIDE) SRS AIRBAG - COMPONENTS

    23. AIRBAG MODULE (PAB) Inflator Assembly (Depowered) Mounting plate Module cover (Trim cover) U-pattern tear seam Bag : not coated -- 130 L No-VENT HOLES

    28. AIRBAG MODULE (FSAB) Inflator Assembly Mounting plate Module cover (Trim cover) Bag : not coated -- 26 L No-VENT HOLES

    31. CONTROL MODULE (ESPS) T.B.D. angle Within 30 from vehicle's centerline : LAW Within 45 from vehicle's centerline : Maker Hard object The vehicle crashed a deer with 80 Km/h, but the airbag did not operate. T.B.D. velocity 9 MPH or below ----------- Not deploy 9 - 12 MPH ---------------- Deploy or not 12 MPH or above ----------- Must deploy

    32. FILTER FUNCTIONS Filtering hazardous gas Cooling generated gas Decrease the noise FOLDS OF FILTER Primary filter Secondary filter Fine mesh screen Deflector

    33. WIRING HARNESS All airbag circuits are designated as such and contained in a special overlay harness. Color coding and unique identification in proper locations throughout the overlay harness is recommended. Front end wire routings and connections should be reviewed with particular emphasis on the airbag circuits, maintaining electrical continuity in the event of collision.

    35. CONTROL MODULE (SDM-FC) The primary functions are ? Crash Detection ? Activation of the front airbags, side airbags and belt pretensioner ? Monitoring of the airbag restrain system ? Indicate system readiness and faults to the driver by means of a fault warning lamp ? Facilitate servicing capability via a serial diagnostic communication interface (Hi_Scan)

    36. CONTROL MODULE (SDM-FC)

    37. CONTROL MODULE (SDM-FC)

    38. CONTROL MODULE (SDM-FC) Measurements in the start up phase ? Watchdog ? EEPROM, ROM, RAM ? Warning Lamps ? Autonomous Operating Time ? High Side Switch and Low Side Switch Test ? Acceleration Sensor

    45. FUNCTIONS (CM: SDM-FC) Internal electromechanical safing sensor. Crash detection, calculation of firing time. Internal electronic acceleration sensing element. Self-test, cyclic monitoring of critical components. SRI activation circuitry with optional monitoring. Storage of faults in non-volatile memory. Energy reserve to provide autonomous operation. Optional crash recording. Provision of 6 airbag firing circuit. 1-wire bi-directional communication interface.

    46. Service Reminder Indicator (S.R.I.) Status Display As soon as operating voltage is applied to the CM activates the SRI for a bulb check. The lamp shall blink 6 times for 6 seconds at 1HZ during the initialization phase and be turned off afterwards. During the initialization phase, the CM will not be ready to detect a crash and deployment will be inhibited until the signals in the CM circuitry stabilize.

    47. SERVICE REMINDER INDICATOR Loss of ignition voltage supply to the CM: lamp turned on continuously. Loss of internal operating voltage: lamp turned on continuously. Loss of CM operation: lamp flashed at approx. 1Hz by watchdog circuitry. Continuous Reset caused by Watchdog Trigger failure: SRI blinks CM not connected: lamp turned on through shorting bar in wiring harness connector.

    56. Seat Belt Pretensioner Activation

    65. Diagnosis Function The CM shall be equipped with a self-diagnostic function. Real time Self-Test mode : Self testing is carried out during CM normal mode of operation Diagnostic Command mode : This mode sets the CM into a serial communication mode with an external off-board tester where a specified subset of normal function are required.

    67. EXTERNAL FAULT Short circuit to GND on squib circuit

    68. EXTERNAL FAULT Short circuit to Vbatt on squib circuit

    69. EXTERNAL FAULT

    70. INTERNAL FAULT The internal SRSCM faults which can be recognized and recorded are given in the table below. These codes will not be available to service personnel.

    71. SRS AIRBAG - COMPONENTS

    72. SRS AIRBAG - COMPONENTS

    74. DATA LINK CONNECTOR 16-PIN (Vehicle side connector: female)

    75. When Danger Comes From the Dashboard Air bags can be hazardous for children riding in the front seats of cars. It's safer to put kids in the back and strap them in which a seat belt. Some of the risks; (see next page)

    76. Child under 12

    77. Infant in a safety seat

    78. Pregnant woman