Body Repair News - I-CAR RTS

Welding Precautions and InformationREPAIRING 1,500 MPa STEEL PARTSObserve these precautions when repairing 1,500 MPa steel parts: Never attempt to straighten damaged 1,500 MPasteel parts; they may crack. 1,500 MPa steel parts must be replaced at factoryseams using squeeze-type resistance spot welding(STRSW). Do not section these parts! MIG brazed joints should be used only in locationsnot accessible by a spot welder. To assure adequate weld tensile strength, alwaysmanually set the spot welder to the specificationsprovided in the Body Repair Manual.Important InformationParts made of Ultra-High-Strength Steel(UHSS/1,500MPa/USIBOR) must be installed as acomplete part. No sectioning allowed. Ultra HighStrength Steel requires special welding equipment,procedures, and settings. See the welding section ofthe appropriate Body Repair Manual. Failure to usethe proper equipment or follow the proper procedurescan result in an unsafe repair. Never do MAG welding on 1,500 MPa steel.The heat generated during MAG welding will590 MPa1,500 MPasignificantly reduce the strength and structuralintegrity of 1,500 MPa steel parts.The photo on the right shows tensile strength testresults of MAG welded 1,500 MPa steel. The 1,500MPa steel fractured first because the welding heatreduced its strength to far below 590 MPa.For more information, refer to “Repair Guidelines forHigh-Strength Steel Parts” in the Body Repair Manual. Tensile Test Results of MAG-Welded 1,500 MPa SteelMIG BRAZING GUIDELINES FOR 1,500 MPa STEEL PARTSRefer to the Body Repair Manual for complete information: MIG-brazed joint locations are specified in thebody repair manual. A single- or double-hole MIG braze may bespecified in the Body Repair Manual depending onthe tensile strength of the parts being joined. The size and number of holes are critical to achievingPulsed MIG (OK)adequate joint strength. A MIG welder with pulse control must be used.Refer to the equipment manufacturer’s instructionsfor welder voltage and current setup. The photos on the right show the difference inresults between pulsed and non-pulsed MIG brazing. 2017 American Honda Motor Co., Inc. – All Rights Reservedw/o Pulsed MIG (NG)8 of 16

MAG WELDING SPECIFICATIONS FOR 590–980 MPa HIGH-STRENGTH STEEL PARTSNOTE: In this publication and the Body Repair Manuals,gas metal arc welding (GMAW) is referred to by itsImportant Informationsubtypes depending on requirements as follows: MIG welding/brazing Metal inert gas welding orParts made of High-Strength Steel (590-980 MPa)brazing where 100% argon (Ar) shielding gas ismust often be installed as a complete part. Sectionused. Argon is inert and does not react with theonly according to published repair information andmolten weld pool or brazing operation.guidelines. This high-strength steel requires special MAG welding Metal active gas welding wherewelding equipment, procedures, and settings. See thethe shielding gas being used contains a mixture ofwelding section of the appropriate Body Repair80% argon (Ar) and 20% carbon dioxide (CO2).Manual. Failure to use the proper equipment or followIt is considered active because the CO2 undergoesthe proper procedures can result in an unsafe repair.a limited reaction with the molten weld pool. For MAG welding, 80/20 shielding gas (C20) ispreferred. However, 75/25 (C25) is acceptableSteel Tensile (MPa)Wire Tensile (ksi)The Body Repair Manual specifies the weld types and590 86locations for each body pane as follows: The welding wire used must have a tensile strength equal780 113to or greater than the lowest tensile strength of the parts980 142being welded. The conversion chart on the right shows therelationship of steel tensile strength (MPa) to the minimum(1,000 psi 1 ksi)welding wire tensile strength (ksi). Typical ER70S-6 MIG wire has a minimum tensile strengthof 70 ksi (483 MPa). It can be used when welding up to440 MPa steel parts. Refer to the diagrams shown below:MAG Butt WeldsMAG Plug Welds980 Mpa Steel590 Mpa Steel590 Mpa Steel590 Mpa SteelWire tensile strength must be: 590 Mpa ( 86 ksi)Wire tensile strength must be: 590 Mpa ( 86 ksi)MAG PLUG WELDING GUIDELINES MAG plug welding may be done when joining bodycomponents to 590–980 MPa steel parts. Follow the recommendations described in the basicBody Repair Manual “Repair Guidelines forHigh-Strength Steel Parts” and “MAG WeldingConditions for High-Strength Steel (Except1,500 MPa) Parts.”MAG BUTT WELDING GUIDELINES MAG butt welding may be done only on steel partswith a tensile strength of 780 MPa and lower. Welding speed is critical to achieve the correct weldstrength and minimize the heat affected zone (HAZ). Follow the recommendations described in the basicBody Repair Manual “Repair Guidelines forHigh-Strength Steel Parts” and “MAG WeldingConditions for High-Strength Steel (Except 1,500 MPa) Parts.” 2017 American Honda Motor Co., Inc. – All Rights Reserved9 of 16

Airbag System Components and RepairsAIRBAG SYSTEM COMPONENTS1. Two SRS (Supplemental Restraint System)front airbags. The driver’s airbag is stored in the center of thesteering wheel; the front passenger’s airbag is stored in the dashboard. Both are marked SRS AIRBAG.2. Two front knee airbags. The driver’s knee airbag is stored under the steering column. The front passenger’sknee airbag is stored under the glove box. Both are marked SRS AIRBAG.3. Two side airbags, one for the driver and one for a front passenger. The airbags are stored in the outeredges of the seat-backs. Both are marked SIDE AIRBAG.4. Two side curtain airbags, one for each side of the vehicle. The airbags are stored in the ceiling, above theside windows. The front and rear pillars are marked SIDE CURTAIN AIRBAG.5. An electronic control unit that, when the vehicle is on, continually monitors information about the variousimpact sensors, seat and buckle sensors, rollover sensor, airbag activators, seat belt tensioners, and othervehicle information. During a crash event, the unit can record such information.6. Automatic front seat belt tensioners. In addition, the driver’s and front passenger’s seat belt bucklesincorporate sensors that detect whether or not they are fastened.7. A driver’s seat position sensor. If the seat is too far forward, the airbag will inflate with less force.8. Weight sensors in the front passenger’s seat. The front passenger’s airbag will be turned off if the weight onthe seat is approximately 65 lbs (29 kg) or less (the weight of an infant or small child).9. Impact sensors that can detect a moderate-to-severe front or side impact.10. An indicator on the dashboard that alerts you that the front passenger’s front airbag has been turned off.11. An indicator on the instrument panel that alerts you to a possible problem with your airbag system or seatbelt tensioners.12. Safing Sensor.13. A rollover sensor that can detect if your vehicle is about to roll over and signal the control unit to deployboth side curtain airbags. 2017 American Honda Motor Co., Inc. – All Rights Reserved10 of 16

AIRBAG SYSTEM INDICATORSThere are two indicators used for the airbag system.Supplemental Restraint System (SRS) IndicatorWhen you turn the ignition to ON, this indicator should come on and then go offafter about 6 seconds. If the SRS indicator does not go off or does not come on at all,there is a problem with the system. DTCs must be read and cleared using the i-HDS (or equivalent)scan tool. Contact a Honda dealer for assistance if necessary. If a vehicle is sent to the dealer for airbag system repair ortroubleshooting, include a copy of the repair estimate with partnumbers and the source for any replaced airbag system parts.SRS IndicatorPASSENGER AIRBAG OFF IndicatorThe indicator comes on to alert you that the passenger’s front airbag has been turned off. This occurs when the front passenger’s weight sensors detectabout 65 lb. (29 kg) or less, the weight of an infant or small childon the seat.PASSENGER AIRBAG If the indicator comes on with no front passenger and no objectsOFF Indicatoron the seat or with an adult occupying the seat, something maybe interfering with the seat weight sensors or there may be aproblem with the system. Contact a Honda dealer for assistanceif necessary.AIRBAG SYSTEM REPAIRS REQUIRED AFTER DEPLOYMENTTo restore proper function and allow DTCs to be cleared, the airbag system must be repaired as specified inthe service information. Refer to “Component Replacement/Inspection After Deployment” for completeinformation. Do not install used, refurbished, or modified airbag system parts! When making airbag system repairs, only use new genuine replacement parts, which are manufactured tothe same standards and quality as the original parts. To ensure the correct replacement airbag system parts are installed, provide the VIN when ordering parts.Compare the part numbers on the new and removed parts to make sure they match.AIRBAG SYSTEM ELECTRICAL REPAIRSExcept when doing electrical inspections that require battery power, always turn the ignition to OFF,disconnect the negative battery cable, then wait at least 3 minutes before starting work. For easier identification, electrical connectors that contain onlyairbag system wiring are yellow in color. Many harnesses that contain primarily airbag wiring are alsowrapped in yellow tape. Airbag system wiring that runs in a common harness, such as afloor harness, is generally not marked. Never attempt to modify, splice, or repair airbag system wiring.If any part of the airbag system wiring is damaged, replace theaffected wiring harness(es).NOTE: Refer to the service information for complete restraintsystems operation, diagnostic, and repair information. 2017 American Honda Motor Co., Inc. – All Rights Reserved11 of 16

Electrical Repair InformationTIRE PRESSURE MONITORING SYSTEM (TPMS) WITH FILL ASSISTThis vehicle is equipped with an initiator-type TPMS. The Low Tire Pressure/TPMS indicator comes on if the air pressureis too low in one or more tires. TPMS messages will also appearon

Always refer to the service information manual and Body Repair Manual for complete repair information. A subscription may be purchased at: techinfo.honda.com. Applies To: 2018 Odyssey Model Series – ALL. Body Repair News. May 2017. 2018 Odyssey: New Model Body Repair Information. TABLE OF CONTENTS. 1 of 16 . New Model Body Technology. Page 2: Body Repair Information; Page 7. Welding .