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SERVICE PRECAUTIONS
danger
  • In order to avoid injury to yourself or others from accidental deployment of the air bag during servicing, read and carefully follow all the precautions and procedures described in this manual.
  • After disconnecting the battery cable, wait 60 seconds or more before proceeding with the following work. The SRS system is designed to retain enough voltage to deploy the air bag for a short time even after the battery has been disconnected, so serious injury may result from unintended air bag deployment if work is done on the SRS system immediately after the battery cables are disconnected.
warning
  • Battery posts, terminals and related accessories contain lead and lead compounds. WASH HANDS AFTER HANDLING.
  • Certain components of this vehicle, such as air bag modules and seat belt pre-tensioners, may contain perchlorate materials. Before deployment and/or disposal of these components, review and comply with all applicable Federal, state and local regulations.
  • Do not use any electrical test equipment on or near the SRS components, except those specified on .
  • Never Attempt to Repair the Following Components: SRS-ECU, Clock Spring, Air Bag Modules, Front impact sensor, Side Impact Sensor, Seat Belt with Pre-tensioner. If any of these components are diagnosed as faulty, they should only be replaced, in accordance with the INDIVIDUAL COMPONENT SERVICE procedures in this manual, starting on .
  • Do not attempt to repair the wiring harness connectors of the SRS. If any of the connectors are diagnosed as faulty, replace the wiring harness. If the wires are diagnosed as faulty, replace or repair the wiring harness according to the following table.

cautionNever heat or incinerate the airbag modules and the seat belt pre-tensioners.
SRS-ECU terminal No.Destination of wiring harnessMeasures
1, 2Instrument panel wiring harness → knee air bag moduleRepair or replace the instrument panel wiring harness.
3, 4Instrument panel wiring harness → clock spring → driver's air bag module 2nd squib sideReplace the clock spring, or repair or replace the instrument panel wiring harness.
5, 6Instrument panel wiring harness → clock spring → driver's air bag module 1st squib side
7, 8Instrument panel wiring harness → passenger's (front) air bag module 1st squib sideRepair or replace the instrument panel wiring harness.
9, 10Instrument panel wiring harness → passenger's (front) air bag module 2nd squib side
13Floor wiring harness → passenger’s air bag OFF indicator lightRepair or replace the floor wiring harness.
17, 27Instrument panel wiring harness → front wiring harness → front impact sensor (LH)Repair or replace the wiring harnesses.
18, 28Instrument panel wiring harness → front wiring harness → front impact sensor (RH)
21Floor wiring harness → ETACS-ECU (fuse No. 21)Repair or replace the floor wiring harness.
22Floor wiring harness → ETACS-ECU (fuse No. 15)
24Instrument panel wiring harness → groundRepair or replace the instrument panel wiring harness.
29, 30Instrument panel wiring harness → CAN bus line
31, 32Floor wiring harness → front passenger's seat belt pre-tensionerRepair or replace the floor wiring harness.
33, 38Floor wiring harness → passenger’s seat belt switch
36, 37Floor wiring harness → curtain air bag module (LH)
39, 40Floor wiring harness → side-airbag module (LH)
41, 42Floor wiring harness → side impact sensor (LH)
43, 63Floor wiring harness → driver's seat belt switch
53, 58Floor wiring harness → Seat slide sensor
54, 55Floor wiring harness → driver's seat belt pre-tensioner
56, 57Floor wiring harness → side-airbag module (RH)
59, 60Floor wiring harness → curtain air bag module (RH)
64, 65Floor wiring harness → side impact sensor (RH)

warning
  • The SRS components and seat belt with pre-tensioner should not be subjected to heat, so remove the SRS-ECU, driver's and front passenger's air bag modules, clock spring, knee air bag module, side-airbag modules, curtain air bag modules, front and side impact sensor and seat belt pre-tensioner before drying or baking the vehicle after painting.
    • SRS-ECU, air bag module, clock spring, impact sensor: 93° C (199° F) or more
    • Seat belt with pre-tensioner 90°C (194° F) or more
  • After servicing the SRS system, check the warning light operation to make sure that the system functions properly (Refer to ).
  • Make certain that the ignition switch is in the "LOCK"(OFF) position when the scan tool is connected or disconnected.