Honda CIVIC 10G 2016 Srs Airbag System Page 1

SRS Precautions and Procedures
General Precautions
NOTE: Some systems store data in memory that is lost when the 12 volt battery is disconnected. Before disconnecting the 12 volt
battery, refer to 12 Volt Battery Terminal Disconnection and Reconnection.
Please read the following precautions carefully before servicing the SRS, or the airbags could accidentally deploy and cause damage
or injuries.
Except when doing electrical inspections that require 12 volt battery power, always turn the vehicle to the OFF (LOCK) mode, and
disconnect the negative cable from the 12 volt battery, then wait at least 3 minutes before starting work.
NOTE: The SRS memory is not erased even if the vehicle is turned to the OFF (LOCK) mode, or if the 12 volt battery cables are
disconnected from the 12 volt battery.
Use replacement parts which are manufactured to the same standards and quality as the original parts. Do not install used SRS
parts. Use only new parts when making SRS repairs.
Carefully inspect any SRS part before you install it. Do not install any part that shows signs of being dropped or improperly
handled, such as dents, cracks, or deformation.
Before disconnecting the SRS unit connectors, always disconnect the appropriate SRS parts connectors.
Use only a digital multimeter to check the system. If it is not a Honda multimeter, make sure its output is 10 mA (0.01 A) or less
when switched to the lowest value in the ohmmeter range. A tester with a higher output could cause accidental deployment and
possible injury.
Do not put objects on the front passenger's airbag.
Steering-Related Precautions
Cable Reel Alignment
Misalignment of the cable reel could cause an open in the wiring, making the SRS, remote steering wheel controls, or the horn
inoperative.
Center the cable reel whenever you do the following.
Installation of the steering wheel.
Installation of the cable reel.
Installation of the steering column.
Other steering-related adjustment or installation.
Do not disassemble the cable reel.
Do not apply grease to the cable reel.
If the cable reel shows any signs of damage, replace it with a new one. For example, if the cable reel does not rotate smoothly,
replace it.
Airbag Handling and Storage
Do not disassemble an airbag. It has no serviceable parts. Once an airbag has been deployed, it cannot be repaired or reused.
For temporary storage of an airbag during service, observe the following precautions.
Store the removed airbag with the pad surface up. Never put anything on the airbag.
SRS Precautions and Procedures 6695 http://techinfo.honda.com/rjanisis/pubs/sm/1/2/Contents/enu/61TBAD/...
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Contents Summary of Srs Airbag System

  • Page 1SRS Precautions and Procedures General Precautions NOTE: Some systems store data in memory that is lost when the 12 volt battery is disconnected. Before disconnecting the 12 volt battery, refer to 12 Volt Battery Terminal Disconnection and Reconnection. Please read the following precautions carefull
  • Page 2To prevent damage to the airbag, keep it away from any oil, grease, detergent, or water. cardiagn.com Store the removed airbag on a secure flat surface away from any high heat source (exceeding 200 °F (93 °C)). Never do electrical tests on the airbags such as measuring resistance. Do not position yo
  • Page 3During installation or replacement, be careful not to bump (by impact wrench, hammer, etc.) the area around the SRS unit, the front impact sensors, or the side impact sensors. The airbags could accidentally deploy and cause damage or injury. cardiagn.com
  • Page 4After a collision regardless if the front airbags, the side airbags, the side curtain airbags, or the front seat belt tensioners deployed or not, always check the SRS data list to inspect which SRS components deployed. Check the deployed history and check for DTCs with the HDS. Deployed components c
  • Page 5To release the lock (A), pull the lever (B) while pushing the lock on the outside of the connector, then pull out the connector (C). cardiagn.com
  • Page 6To reconnect the connector (D), push in on the connector. As the connector is pressed in, the lever (E) moves to the locked position. Spring-Loaded Lock Connector Some SRS connectors have a spring-loaded lock. cardiagn.com Driver's Airbag Connector/Side Curtain Airbag Connector/Front Seat Belt Tensi
  • Page 7To reconnect, hold both connector halves and press them firmly together until a click is heard. Do not touch sleeve (C). Side Airbag Connector Disconnecting/Connecting cardiagn.com To release the lock, pull the spring-loaded sleeve (A) toward the stop (B) while holding the opposite half of the conne
  • Page 8The side curtain airbag module assembly is a long jointed part containing an inflator, a flexible bag, and brackets. When removing or installing the side curtain airbag assembly, never: Handle the flexible bag. Drop the airbag assembly. Cut, tear, or unwrap the tape strips. Front Seats With Side Air
  • Page 9SRS System Description - Overview The vehicles are equipped with SRS airbags (driver's and front passenger's), side airbags, side curtain airbags, and seat belt tensioners. SRS Airbag System (Driver's and Front Passenger's Airbag) In case of a frontal collision, the SRS airbag system uses a seat bel
  • Page 10SRS airbag does not deploy in the following cases: The SRS airbag deploys when a strong impact comes from the front right or left direction within 30 degrees from the front face when the vehicle is in the ON mode. Therefore, in the following cases, the SRS airbag does not deploy because there is no
  • Page 11*OPDS: Occupant Position Detection System cardiagn.com
  • Page 12Side airbag and side curtain airbag deployment process 1. The collision force generated from the side impact is input to each of the side impact sensors and the side impact G sensor inside the SRS unit. 2. If the microprocessor inside the SRS unit determines that the side impact sensor output exceed
  • Page 13Conditions in which side airbag and side curtain airbag may not deploy Since the side airbags and the side curtain airbags are designed to deploy when an impact force to the vehicle side exceeds a preset value, they may not deploy when impact forces are reduced by the vehicle's crush zone, or when a
  • Page 14SRS Component Location Index cardiagn.com
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  • Page 17SRS Circuit Diagram cardiagn.com
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  • Page 21Air Mix Control Motor/Mode Control Motor/Recirculation Control Motor Removal and Installation SRS components are located near the mode control motor and the recirculation control motor. Review the SRS component locations and the precautions and procedures before doing repairs or service. NOTE: Set t
  • Page 22cardiagn.com 3. All Removed Parts - Install
  • Page 23Air mix control motor 1. Install the parts in the reverse order of removal, and note these items: When you install the air mix control motor and the passenger's air mix control motor (A), align the position of the damper lever pins (B), then install control motor. After installation, do the Self-Dia
  • Page 24Air Mix Control Motor/Mode Control Motor/Recirculation Control Motor Test Special Tool Required Image Description/Tool Number Backprobe Set 07SAZ-001000A* cardiagn.com *Available through the Honda Tool and Equipment Program; call 888-424-6857. SRS components are located near the mode control motor a
  • Page 253. Air Mix Control Motor, Passenger's Air Mix Control Motor, Mode Control Motor, and Recirculation Control Motor - Test 1. Disconnect the connector for necessary inspections. Incorrectly applying power and ground to the HVAC control motors will damage it. Follow the instructions carefully. 2. Test t
  • Page 265. Reconnect the connector, which was removed in the step 1. 6. Turn the vehicle to the ON mode. 7. Using the backprobe set, measure the voltage between terminals according to the table. cardiagn.com 8. If either the resistance or the voltage readings are not as specified, replace the faulty motor.
  • Page 27Airbag and Tensioner Disposal Special Tool Required Image Description/Tool Number Deployment Tool 07AAZ-000A100 cardiagn.com NOTE: Unless otherwise indicated, illustrations used in the procedure are for 4-door. Before scrapping any front airbags, side airbags, side curtain airbags, or front seat bel
  • Page 28Deploying Airbags in the Vehicle If an SRS equipped vehicle is to be entirely scrapped, its front airbags, side airbags, side curtain airbags, and front seat belt tensioners should be deployed while still in the vehicle. These parts should not be considered as salvageable parts and should never be i
  • Page 29Side Airbag 8. Disconnect the driver's and front passenger's side airbag inflator connectors (A) on the floor wire harness. cardiagn.com Side Curtain Airbag 9. 2-door: Remove the quarter pillar trim. 10. 4/5-door: Remove the headliner. 11. Locate the left and right side curtain airbag inflator conne
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  • Page 3115. Cut off each connector and strip the ends of the wires. To prevent inflators from being deployed unexpectedly, twist each pair of wires coming from each inflator to have each inflator short-circuited. 16. Select one pair of wires and untwist the wires. Clip an alligator clip (A) to each end of t
  • Page 3219. Dispose of the complete airbag or tensioner. No part of it can be reused. Place it in a sturdy plastic bag (A), and seal it securely. Dispose of the deployed airbag according to your local regulations. Deploying Components Out of the Vehicle If an intact airbag or tensioner has been removed from
  • Page 33If the green light on the tool comes on, the igniter circuit is defective and cannot deploy the component. Go to Disposal of Damaged Components. If the red light on the tool comes on, the component is ready to be deployed. 6. Push the tool's deployment switch. The airbags and tensioners should deplo
  • Page 34Deployment Tool Check 1. Connect the yellow clips to both switch protector handles on the tool. 2. Then connect the red lead to the positive battery post and the black lead to the negative battery post. 3. Push the operation switch: The green light should come on, indicating that the tool is operati
  • Page 35Cable Reel Removal and Installation SRS components are located in this area. Review the SRS component locations and the precautions and procedures before doing repairs or service. NOTE: Before doing this procedure, set the front wheels in the straight ahead position. 1. 12 Volt Battery Terminal - Di
  • Page 36NOTE: cardiagn.com
  • Page 37Before installing the steering wheel, make sure the front wheels are aligned straight ahead. The new cable reel is locked by a yellow tab for center adjustment. When installing a new cable reel there is no need to rotate the cable. After the tab is removed, discard it after installing the cable reel
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  • Page 396. SRS Operation - Confirm 1. Do the 12 volt battery terminal reconnection procedure, turn the vehicle to the ON mode, and check that the SRS indicator comes on for about 6 seconds and then goes off. cardiagn.com
  • Page 40Danger/Warning/Caution Label Locations NOTE: Unless otherwise indicated, the illustrations show the 4-door models. Front Passenger's Compartment: cardiagn.com Front Passenger’s Compartment (4-door): Rear Passenger’s Compartment (2-door):
  • Page 41Rear Passenger’s Compartment (5-door): Engine Compartment: Doorjamb Area: cardiagn.com
  • Page 42Driver's Airbag Removal and Installation SRS components are located in this area. Review the SRS component locations and the precautions and procedures before doing repairs or service. NOTE: If replacing the driver's airbag after deployment, refer to Component Replacement/Inspection After Deployment
  • Page 43NOTE: Be careful not to damage the connector. 3. Disconnect the horn switch terminal (D). NOTE: Release the locks pushing the tab (E) of the horn switch terminal. 4. Remove the driver's airbag (F). NOTE: If you are replacing a deployed driver's airbag, inspect the cable reel for heat damage. If ther
  • Page 44Front Passenger's Airbag Cutoff Indicator Removal and Installation SRS components are located in this area. Review the SRS component locations and the precautions and procedures before doing repairs or service. 1. 12 Volt Battery Terminal - Disconnect NOTE: Wait at least 3 minutes before starting wo
  • Page 45Front Passenger's Airbag Removal and Installation SRS components are located in this area. Review the SRS component locations and the precautions and procedures before doing repairs or service. NOTE: If replacing the front passenger's airbag after deployment, refer to Component Replacement/Inspectio
  • Page 462. Disconnect the connector (A). 3. Remove the mounting bolts (B). 4. Release the hooks (C) from the front passenger's airbag housing holes (D) of the dashboard. NOTE: When prying with a flat-tip screwdriver, wrap it with protective tape to prevent damage. Take care not to damage the front passenger
  • Page 473. Remove the front passenger's airbag/dashboard assembly (A). cardiagn.com SRS components are located in this area. Review the SRS component locations and the precautions and procedures before doing repairs or service. Installation Before Front Passenger's Airbag Deployment 1. Front Passenger's Air
  • Page 484. With knee bolster: Install the bracket (A) with the special bolt (B) and the mounting bolts (C). NOTE: When installing the special bolt, refer to the procedures of Dashboard/Steering Hanger Beam Removal and Installation. cardiagn.com 2. SRS Operation - Confirm 1. Do the 12 volt battery terminal r
  • Page 491. Insert the hooks (A) into the front passenger's airbag housing holes (B), then insert the other hooks (C) into the housing holes (D). 2. Tighten the new mounting bolts (E). NOTE: Make sure there are no objects between the airbag and the dashboard. Make sure the airbag is fully seated, and make su
  • Page 504. Install the new mounting bolt (A). 5. Connect the connector (B). 2. SRS Operation - Confirm cardiagn.com 1. Do the 12 volt battery terminal reconnection procedure, turn the vehicle to the ON mode, and check that the SRS indicator comes on for about 6 seconds and then goes off. 3. Glove Box - Inst
  • Page 51Front Passenger's Weight Sensor Initialization NOTE: When you replace or update the SRS unit, initialize the front passenger's weight sensor with the HDS. When you replace or remove the front passenger's weight sensor, the front passenger's seat frame, or the front passenger's seat rail, initialize
  • Page 52If after reinstalling the front passenger's weight sensors, the HDS (T0) is still at or not within ±0.35 kg (±0.77 lbs), replace the front passenger's weight sensors, then repeat this procedure from the beginning. 4. Prepare a weight between 10 kg (22 lbs) - 20 kg (44 lbs) then measure and note its
  • Page 539. Turn the vehicle to the OFF (LOCK) mode. cardiagn.com
  • Page 54Front Passenger's Weight Sensor Operation Check After Replacing Front Passenger's Seat Component(s) NOTE: Check the front passenger's weight sensor operation after replacing or removing front passenger's seat component(s) (except front passenger's weight sensor, the front passenger's seat frame, or
  • Page 55NOTE: The accuracy of the weight scale must be within 1 kg (2 lbs). The weight must be uniform in shape and size to allow precise placement on the seat. 4. Precisely place the prepared weight on center of the front passenger's seat as shown. cardiagn.com 5. From the Data List, select FRONT PASSENGER
  • Page 56Front Passenger's Weight Sensor Output Check After a Vehicle Collision NOTE: Check the front passenger's weight sensor output after a vehicle collision, regardless if the airbags and seatbelt tensioners deployed or not. When any of the following procedures are performed, go to Front Passenger's Weig
  • Page 573. Prepare a weight between 10 kg (22 lbs) - 20 kg (44 lbs) then measure and note its actual weight (M) with a weight scale. NOTE: The accuracy of the weight scale must be within 1 kg (2 lbs). The weight must be uniform in shape and size to allow precise placement on the seat. 4. Precisely place the
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  • Page 59Front Passenger's Weight Sensor Removal and Installation SRS components are located in this area. Review the SRS component locations and the precautions and procedures before doing repairs or service. NOTE: Removal of the front passenger's weight sensors must be done according to Precautions and Pro
  • Page 601. Remove the slide motor cover (A). 2. Disconnect the connectors (B) and remove the clip (C). cardiagn.com 3. Remove the weight sensor nuts (A) and the mounting nuts (B), then remove the front passenger's seat rail/front passenger's weight sensors as an assembly (C). SRS components are located in t
  • Page 61Be sure to install the harness wires so they are not pinched or interfering with other parts. Manual seat: The front passenger's weight sensor is part of the seat frame and must be replaced as an assembly. Power Seat: The front passenger's weight sensor is part of the seat rail and must be replaced
  • Page 621. Install the front passenger's seat rail/front passenger's weight sensors as an assembly (A) to the seat frame as shown, and loosely tighten the new weight sensor nuts (B) and the mounting nuts (C). NOTE: The bushings and collars can be identified by their color. Make sure to install the bushings
  • Page 632. Tighten weight sensor nuts (A) and the mounting nuts (B) to the specified torque. NOTE: Tighten the nuts in the numbered sequence shown. cardiagn.com 3. Connect the connectors (A) and install the clip (B). 4. Install the slide motor cover (C). 2. Front Seat Recline Inner/Outer Cover - Install 3.
  • Page 644. Front Seat-Back Cover/Pad - Install cardiagn.com
  • Page 655. Front Passenger's Seat - Install 6. 12 Volt Battery Terminal - Connect 7. Seat Operation - Confirm 1. Move the front seat and the seat-back through their full ranges of movement, making sure the harnesses are not pinched or interfering with other parts. 8. Front Passenger's Weight Sensor - Initia
  • Page 66Grab Handle Removal and Installation Special Tool Required Image Description/Tool Number Push Pin/Grab Rail Cap Pliers 07AAC-001A100 cardiagn.com 1. Grab Handle - Remove 1. Lower the grab handle (A). 2. Insert the tips of the push pin/grab rail cap pliers (B) into the notch.
  • Page 673. Gently squeeze the handles of the push pin/grab rail cap pliers (A), and pull the cap (B) straight out. 4. Lower the grab handle (A). 5. Squeeze the clips (B) with pliers, then remove the grab handle. cardiagn.com 1. Grab Handle - Check
  • Page 681. If the side curtain airbag has not deployed, inspect the grab handle (A) for damage. A damaged grab handle may cause the side curtain airbag to deploy improperly, possibly causing injury. Replace the grab handle if it has any of the following of damage: Any cracks or breakage in the grab handle A
  • Page 69How to Read Deployed History How to Read Deployed History NOTE: Due to the amount of electrical current that flows within the SRS unit to deploy airbags and tensioners, the SRS unit will be severely damaged and will require replacement. Therefore, the SRS unit retains a history that indicate which a
  • Page 70How to Troubleshoot the SRS SRS Indicator The SRS indicator (A) on the gauge control module indicates problems related with SRS function. If the system is OK, the SRS indicator should come on when you turn the vehicle to the ON mode, and then go off 6 seconds later. If it does not, there is a proble
  • Page 71To prevent damage to the connector terminals, do not insert the test equipment probes, paper clips, or other substitutes as they can damage the terminals. Damaged terminals cause a poor connection and an incorrect measurement. cardiagn.com
  • Page 722. Connect one side of the patch cord terminals (A) to a commercially available digital multimeter (B), and connect the other side of the terminals (C) to the male pin probe. cardiagn.com 3. Gently contact the male pin probe at the terminal test port from the terminal side. Do not force the tips int
  • Page 73Make sure the 12 volt battery is fully charged when doing an electrical test. If the 12 volt battery is not fully charged, the results of the tests may not be accurate. Do not insert the probe of the tester into the terminal side of the connector, and do not tamper with the connector. To prevent dam
  • Page 74Terminal numbers are shown on the terminal side of the female terminals. Insert the SRS short canceller(s) into the cavities on the terminal side of the connector. cardiagn.com DTC (Diagnostic Trouble Codes) The self-diagnostic function of the SRS unit allows it to locate the causes of system proble
  • Page 75When you turn the vehicle to the ON mode, the SRS indicator should come on. If it goes off after 6 seconds, the system is normal and is not currently detecting any problems. If there is a problem, the system locates and defines the problem, stores this information in the memory, and turns on the SRS
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  • Page 773. Clear the DTC(s) by following the screen prompts on the HDS. 4. Turn the vehicle to the OFF (LOCK) mode, then wait for 10 seconds. Troubleshooting Intermittent Failures If there was a malfunction that sets a DTC, but it does not recur, a DTC will be stored in the memory, and the SRS indicator may
  • Page 78LKAS Switch Removal, Installation, and Test SRS components are located in this area. Review the SRS component locations, and the precautions and procedures before doing repairs or service. 1. Driver's Airbag - Remove 2. Steering Wheel Trim - Remove 1. Remove the screws (A). 2. Disconnect connectors
  • Page 79cardiagn.com 4. All Removed Parts - Install 1. Install the parts in the reverse order of removal. 1. LKAS Switch - Test 1. Measure the resistance between ACC combination switch connector terminals No. 5 and No. 12 according to the table. If there is no resistance in one or more positions, replace th
  • Page 80Side Airbag Removal and Installation SRS components are located in this area. Review the SRS component locations and the precautions and procedures before doing repairs or service. NOTE: How to read the torque specifications. If replacing the side airbag after deployment, refer to Component Replacem
  • Page 81Without Cloth Reinforcement Type 5. Remove the clips (A) and the mounting nuts (B). NOTE: The number of nuts varies with the some for models. 6. Pull the harness (C) from the clearance of the seat frame and remove the side airbag (D). With Cloth Reinforcement Type 7. Remove the clips (A) and the mou
  • Page 8210. Pull the side airbag stud bolts (A) out through the holes (B) in the cloth reinforcement (C) of the seat-back cover, then remove the side airbag (D). cardiagn.com 4. All Removed Parts - Install 1. Install all of the removed parts in reverse order. NOTE: During installation, install the new mount
  • Page 83Side Curtain Airbag Removal and Installation SRS components are located in this area. Review the SRS component locations and the precautions and procedures before doing repairs or service. NOTE: How to read the torque specifications. If replacing the side curtain airbag after deployment, refer to Co
  • Page 844/5-Door cardiagn.com 3. Remove the side curtain airbag mounting bolts (A), the mounting bolts (B), and the hooks (C), then remove the side curtain airbag. NOTE: 4-door: Remove the side curtain airbag mounting bolt (D). Depending on the model, the side curtain airbag mounting bolts are either a 5mm
  • Page 854-Door cardiagn.com
  • Page 865-Door cardiagn.com
  • Page 87cardiagn.com 4. All Removed Parts - Install 1. Install all of the removed parts in reverse order. NOTE: During installation, install the new side curtain airbag mounting bolts to the specified torque. If the side curtain airbag is frayed, or has any other visible damage, replace it. Do not attempt t
  • Page 88When you install the side curtain airbag, make sure it is not twisted, and that it is not caught between the inflator bracket and the bracket bolts. Make sure that the side curtain airbag inflator retainer is installed properly. Otherwise the side curtain airbag could incorrectly deploy and cause da
  • Page 89SRS Component Replacement/Inspection After Deployment 1. Component Replacement/Inspection After Deployment - Inspect NOTE: Before doing any SRS repairs after a collision, check the deployed history and check for DTCs with the HDS to determine the components that need replacement. Do not repair damag
  • Page 90After a collision where the side curtain airbag deployed, replace the items for the side(s) that deployed: SRS unit Deployed side curtain airbag(s) Front seat belt(s) Side impact sensor(s) (first) Side impact sensor(s) (second) A-pillar trim B-pillar upper trim Quarter pillar trim (2-door) C-pillar
  • Page 91cardiagn.com 2. Apply masking tape (C) to the headliner to mark the upper edge (D) of the pillar trim. 3. Remove the pillar trim, and measure the headliner overlap. If the overlap is 8.0 +0/-3.0 mm (0.315 +0/-0.118 in), remove the tape, and install the pillar trim. If the overlap is more than 8.0 mm
  • Page 92SRS Symptom Troubleshooting - Front passenger's airbag cutoff indicator stays on or comes on suddenly cardiagn.com Front passenger's airbag cutoff indicator stays on or comes on suddenly NOTE: Before doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that
  • Page 93Does the front passenger's airbag cutoff indicator stay on? YES Go to step 2. NO The vehicle is OK at this time.■ 2. System check 2: ‐1. Turn the vehicle to the OFF (LOCK) mode. ‐2. Connect the HDS to the data link connector (DLC). ‐3. Turn the vehicle to the ON mode. ‐4. From SRS of the System Sele
  • Page 94SRS Symptom Troubleshooting - Front seat belt reminder indicator does not come on, turn off, or flash cardiagn.com Front seat belt reminder indicator does not come on, turn off, or flash NOTE: Before doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that
  • Page 95‐1. Do the gauge control module self-diagnostic function. Does the front seat belt reminder indicator blink? YES Check for any authorized service information related to the DTCs or symptoms you are troubleshooting or replace the SRS unit.■ NO Replace the gauge control module.■ cardiagn.com
  • Page 96SRS Symptom Troubleshooting - SRS indicator does not come on SRS indicator does not come on NOTE: Before doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that all the required components were replaced with new components of the correct part number and w
  • Page 97SRS Symptom Troubleshooting - SRS indicator stays on, but no DTCs are stored, or cannot be read cardiagn.com SRS indicator stays on, but no DTCs are stored, or cannot be read NOTE: Before doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that all the req
  • Page 98YES The vehicle is OK at this time.■ NO The failure is duplicated. Go to step 2. 2. DTC check: ‐1. Check for DTCs with the HDS. DTC Description DTC Are any SRS DTCs indicated? YES Go to SRS DTC troubleshooting.■ NO Go to step 3. 3. Body electrical system DTC check: ‐1. Check for body electrical DTCs
  • Page 99Test point 2 Body ground Is there battery voltage? YES The VB wire is OK. Go to step 6. NO Open in the dashboard wire harness or faulty under-dash fuse/relay box; replace the dashboard wire harness or the under-dash fuse/relay box.■ 6. Open wire check (GND line): ‐1. Turn the vehicle to the OFF (LOC
  • Page 100SRS System Description - Driver's and Front Passenger's Airbag SRS Airbag (Driver's and Front Passenger's Airbag) The driver's airbag is located in the center of the steering wheel. The front passenger's airbag is located in the dashboard on the front passenger's side. cardiagn.com Driver's Airbag (
  • Page 101cardiagn.com Dual Inflators The airbag modules adopt dual inflators for the driver's and the front passenger's airbag. The dual inflators increase airbag effectiveness by properly adjusting the timing when the two inflators are ignited (together or sequentially) referring to the collision speed or c
  • Page 102SRS System Description - Driver's Seat Position Sensor The driver's seat position sensor is mounted to the driver's seat rail. When the driver's seat is moved to the full-forward position, a metal part of the seat track interrupts the sensor signal. This change in signal is then sent to the SRS unit
  • Page 103SRS System Description - Front Passenger's Weight Sensor Overview The front passenger's weight sensors for load detection are equipped inside the front passenger's seat. The SRS unit receives the load information from the weight sensors, performs an occupant judgment of the front passenger's seat, a
  • Page 104SRS System Description - Impact Sensor Impact Sensor The G-force sensor within the impact sensor detects the force upon a collision. If the impact exceeds a preset threshold value, it is converted into an electrical signal that is sent to the SRS unit. Front impact sensor: The front impact sensors a
  • Page 105SRS System Description - Seat Belt Tensioner ELR Seat Belt Tensioner With Load Limiter The ELR seat belt tensioner with load limiter is composed of a gas generator, a ring gear, a pinion, an ELR locker, and a spool. When the seat belt tensioner operates, it quickly tightens the seat belt and improve
  • Page 106Operation of Load Limiter cardiagn.com
  • Page 1073. If the seat belt is rapidly pulled out, like an occupant sliding forward during a collision, the seat belt operates the lock mechanism, engaging the pawl to the frame gear. That locks the locking base and its integrated torsion bar and spool. cardiagn.com 4. When a certain amount of load is added
  • Page 108SRS System Description - Side Airbag and Side Curtain Airbag Side Airbag The side airbags are located at the outside position of the seat-back of the driver's seat and the front passenger's seat. Being installed at the seat-back enables operation in optimal condition for the occupants regardless of
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  • Page 110SRS Unit Connector for Inputs and Outputs Connector Index SRS unit connector A (39P) SRS unit connector B (39P) SRS Unit Inputs and Outputs at Connector A (39P) (female terminals) cardiagn.com Terminal Terminal Description Number Name 1*3 CDS Collision detection signal output line 2 Not Used ― 3 Not
  • Page 111*3: 5-door. cardiagn.com
  • Page 112Terminal Terminal Description Number Name 28 OFF PTT Front passenger's airbag cutoff indicator output line 29 RFS+ Power source for the right front impact sensor 30 RFS- Ground for the right front impact sensor 31 LFS+ Power source for the left front impact sensor 32 LFS- Ground for the left front i
  • Page 113Terminal Terminal Description Number Name 16 Not Used ― cardiagn.com
  • Page 114Terminal Terminal Description Number Name 17 Not Used ― 18 RRP- Ground for the front passenger's seat belt tensioner 19 RRP+ Power source for the front passenger's seat belt tensioner 20 LRP+ Power source for the driver's seat belt tensioner 21 LRP- Ground for the driver's seat belt tensioner 22 Not
  • Page 115SRS Unit Removal and Installation SRS components are located in this area. Review the SRS component locations and the precautions and procedures before doing repairs or service. 1. 12 Volt Battery Terminal - Disconnect NOTE: Wait at least 3 minutes before starting work. 2. Center Console - Remove 3.
  • Page 1162. Remove the clip (A), then disconnect the connectors (B). NOTE: The SRS unit connectors have lever locks. Release the locks before disconnecting the connectors. 3. Remove the bolts (C), then remove the SRS unit (D). cardiagn.com 4. All Removed Parts - Install 1. Install all of the removed parts in
  • Page 117SRS Unit Update Special Tool Required Image Description/Tool Number MVCI unit with the latest control module (CM) update software installed cardiagn.com 1. SRS Unit - Update NOTE: Check any official service website for more information about updating the MVCI and control units. 2. Yaw Rate-Accelerat