Front Pretensioner LH Seat Belt Tension Sensor Rear Airbag Sensor LH Junction Connector Airbag ECU Assembly Curtain Shield Airbag Assembly RH Curtain Shield Airbag Assembly Circuit LH Occupant Detection Sensor Side Airbag Sensor Assembly RH Spiral Cable Sub-Assembly , Driver Side Squib Circuit ECM Front Passenger Side Squib 2nd Step Circuit Multi-Display Assembly Lower No.1 Instrument Panel Airbag Assembly RH Occupant Detection ECU Side Airbag Sensor Assembly LH Spiral Cable Sub-Assembly , Driver Side Squib Circuit , Driver Side Squib 2nd Step Circuit Hybrid Vehicle Control ECU DLC3 Front Seat Inner Belt Assembly RH Combination Meter Rear Pretensioner RH Front Pretensioner RH Rear Side Airbag Assembly RH Rear Airbag Sensor RH Junction Connector Front Passenger Side Squib Circuit Rear Seat Airbag Assembly RH Junction Connector Driver Side Squib 2nd Step Circuit , Spiral Cable Sub-Assembly Rear Pretensioner LH Lower No.1 Instrument Panel Airbag Assembly LH Front Airbag Sensor LH Front Side Airbag Squib Circuit RH Telephone ECU Assembly Front Airbag Sensor RH Front Side Airbag Squib Circuit LH Rear Side Airbag Assembly LH Junction Connector Front Seat Inner Belt Assembly LH 2C 10A IGN BR W-B W-B 54 B RR- B RR+ PA 23 Y W f19 2 PAON A Y B 4 BBR- B BBR- B BBR+ 3 43 BBR+ E2 A E1 A W-B W-B P-AB A PA 49 PA PA C LSP+ LBE+ C Buckle Switch SRL- SRL+ Y Y-B 1 C RL- C RL+ f35 2 SRR- SRR+ B Y B Y-B 1 3 4 6 5 2 1 7 8 21 27 29 28 30 2 1 3 4 7 8 2 1 20 19 10 9 17 15 16 10 9 25 26 23 17 Seat Belt Tension Sensor 18 Rear Side Airbag Assembly LH Side Airbag Sensor Assembly RH Rear Side Airbag Assembly RH Side Airbag Sensor Assembly LH Curtain Shield Airbag Assembly RH Occupant Detection Sensor Rear Airbag Sensor RH Rear Seat Airbag Assembly RH Rear Airbag Sensor LH Curtain Shield Airbag Assembly Circuit LH 23 24 BBL+ 3 R R PA 24 PA 29 L73(A), R5(B), S8(C) BBL+ C BBL- C BBL- 4 B Y (IG) 10 L86 PK- PK+ 1 PK+ A PK- Y-B Y A 2 L7 DK- DK+ 1 DK+ A DK- Y-B Y A 2 R3 R- R+ 1 PR+ B PR- Y-B Y B 2 S3 L- L+ 1 PL+ C PL- Y-B Y C 2 R22 RR- RR+ 1 PRR+ B PRR- Y-B Y B 2 S27 RL- RL+ 1 PLR+ C PLR- Y-B Y C 2 SFR- SFR+ Y 9 Y-B 1 B SFR- B SFR+ R4 2 SFL- SFL+ Y Y-B 1 C SFL- C SFL+ S1 2 2 +SR -SR B W B W 2 1 A -SR A +SR A53 1 2 +SL -SL B W B W 2 1 A -SL A +SL A8 1 Y-G Y-R Y Y-B Y-G Y-R Y Y-B 4 3 2 1 A P2- A P2+ A P- A P+ 1 B IG2 A 18 W B 5 12 1 4 W B 11 9 A 16 A 15 CANL CANH Passenger Airbag ON/OFF Indicator Front Seat Inner Belt Assembly RH Hybrid Vehicle Control ECU z11(B) Y-G D2- A D2- Y-R D2+ A D2+ Y D- A D- Y-B D+ A D+ 7 8 6 5 Driver Side Squib Circuit A 1 A 2 A 4 z12(C) Driver Side Squib 2nd Step Circuit A 3 B 2 B 1 C 1 Airbag ECU Assembly L73(A), R5(B), S8(C) Y Y-B 2 1 Y Y-B 2 1 RCR- RCR+ Y Y-B 1 B RCR- B RCR+ f18 2 11 12 Front Airbag Sensor LH Y Y-B 2 1 (*2) (*2) (*2) (*2) Front Airbag Sensor RH S5 BCL+ 2 1 BCL+ 1 S12 BCL- 2 R W Front Side Airbag Squib Circuit LH BCL- Front Side Airbag Squib Circuit RH R7 BCR+ 2 1 BCR+ 1 R11 BCR- 2 R W Rear Pretensioner LH BCR- 16 22 W B B FSR- FSR+ B 2 3 (IG) 10 PJ 5A P RR-IG2 4 3 1 e16 Rear Pretensioner RH 11 GR 8 FSR+ 16 IG BR 9 W B GBT L FSR- L 12 BT 2 17 G VBT GPS 1 VPS 3 V R GPS 15 VPS 7 PS 2 P PS 6 Front Pretensioner LH Front Pretensioner RH e11 R17 ICR- ICR+ 1 ICR+ B ICR- Y Y-B B 2 S24 ICL- ICL+ 1 ICL+ C ICL- Y Y-B C 2 6 5 3 4 Lower No. 1 Instrument Panel Airbag Assembly RH Lower No. 1Instrument Panel Airbag Assembly LH * 1 : w/ LEXUS Link System (Mayday System) PK 7 PA 7 R GBT VBT BT RBE+ RBE- 1 W 13 BSW 2 Y 14 BGND Airbag ECU Assembly e13 LED DRIVER SRS 5A P IG2 PA 60 (IG) 10A D MPX-B 1 (BAT) 58 DA 4H 10 4G 10 4F 12 4G 12 20 21 CPU CAN CONTROLLER CAN I/F 5V IC Combination Meter L10 B L B L 13 14 B IG2 CANL CANH Signal Earth Body Earth IG2 MPX-B CPU TFT CPU TFT Panel TFT Module Back Light Buzzer I/F Master Front Passenger Side Squib Circuit z18 Front Passenger Side Squib 2nd Step Circuit z17 2 1 2 LSP+ LBE+ 2 1 Seat Position Airbag Sensor 5 Front Seat Inner Belt Assembly LH S17 3 4 LBE- W-B W-B W-B LSP- Junction Connector S57 BR 5 W-B GND 8 W-B W-B A 22 A 13 CANL CANH A GSW 18 B A GSW3 24 W PA 47 PA 56 PA 8 PJ 11 16 G L GSW CANL DA 53 Main Body ECU ECM A13(A) A 13 (*1) (*1) W-B W-B Occupant Detection ECU e10 10 DIA R 1 30 3A 7 3I 8 R R SIL 7 R DLC3 L31 L59(A) Multi-Display Assembly AIR ARON A 20 A 9 L73(A), R5(B), S8(C) Airbag ECU Assembly 22 20 46 45 16 15 8 7 W-B 39 PA 51 PA ES 18 W-B BR BR W-B BR W-B 17 58 PA 43 PA 11 4H 11 4G 1 4H 1 4G E2 40 PA W-B 1 4J P- P+ P2- P2+ Airbag ECU Assembly L73(A), R5(B), S8(C) B W B W 19 18 Junction Connector L98 Junction Connector A67 Junction Connector L97 A74(A), A76(C) G R R G G R L Y W B C 2 Spiral Cable Sub-Assembly L22(A), z11(B), z12(C) W B A 14 A 13 CA3L CA3H CANH A 14 ABFS C 31 A 14 GSW2 Y PK 18 PA 9 Y Y GSW B 16 Telephone ECU Assembly R24(B) Note : Please refer to the Multiplex Communication System - CAN section for information regarding the shielded communication lines. Note : Please refer to the Multiplex Communication System - CAN section for information regarding the shielded communication lines. * 2 : w/ Ottoman * If the vehicle is equipped with a mobile communication system, refer to the precaution in the IN section of the Repair Manual. * After work on the SRS is completed, check the SRS warning light. * Information labels are attached to the periphery of the SRS components. Follow the instructions of the notice. * Use a volt/ohmmeter with high impedance (10 kΩ/V minimum) for troubleshooting electrical circuits of the system. * If the following parts have been dropped, or have cracks, dents and other defects in their case, bracket, and connector replace with new one. * For the purpose of reuse, never disassemble and repair the following parts. * Never use SRS parts from another vehicle. When replacing parts, replace with new parts. * Even in cases of a minor collision where the SRS does not deploy, the following parts should be inspected; * Do not expose the following parts directly to hot air or flame; * Before repair, remove the airbag sensor if shocks are likely to be applied to the sensor during repair. * Steering wheel pad * Side airbag assembly * Front passenger airbag assembly * Curtain shield airbag assembly * Seat belt pretensioner * Center airbag sensor assembly * Front airbag sensor assembly * Work must be started more than 90 seconds after the power switch is pushed to the "OFF" position and the negative (-) terminal cable is disconnected from the battery. (The SRS is equipped with a back-up power source so that if work is started within 90 seconds from disconnecting the negative (-) terminal cable of the battery, the SRS may deploy. ) * Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the most important source of information when troubleshooting. When troubleshooting the SRS, always inspect the DTCs before disconnecting the battery. * Rear airbag sensor assembly NOTICE : When inspecting or repairing the SRS, perform service in accordance with the following precautionary instructions and the procedure, and precautions in the Repair Manual applicable for the model year. * Side airbag sensor assembly * When the negative (-) terminal cable is disconnected from the battery, the memory of the clock and audio system will be cleared. So before starting work, make a record of the contents in the audio memory system. When work is finished, reset the audio systems as they were before and adjust the clock. Some vehicles have power tilt steering, power telescopic steering, power seat and power outside rear view mirror which are all equipped with memory function. However, it is not possible to make a record of these memory contents. So when the work is finished, it will be necessary to explain it to your customer, and ask the customer to adjust the features and reset the memory. To avoid erasing the memory in each system, never use a back-up power supply from outside the vehicle. * Knee airbag assembly * Rear seat airbag assembly LA4 LA4 LA1 LA1 LR1 Re3 Re1 Re3 LA2 LA2 Lz2 Lz2 Lz2 Lz2 Sf2 Sf2 Rf2 Rf2 Rf3 Rf3 Re3 Re3 S2 L1 L3 R3 L1 L4 L3