Repair Instruction: Precaution

1. HINTS ON OPERATIONS
   Fig 1: Identifying Precaution For Handling Vehicle

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. JACKING UP AND SUPPORTING VEHICLE
   1. Care must be taken when jacking up and supporting the vehicle. Be sure to lift and support the vehicle at the proper locations.
3. PRECOATED PARTS
   1. Precoated parts are bolts and nuts that are coated with a seal lock adhesive at the factory.
   2. If a precoated part is retightened, loosened or moved in any way, it must be recoated with the specified adhesive.
   3. When reusing a precoated part, clean off the old adhesive and dry the part with compressed air. Then apply new seal lock adhesive appropriate to that part.
   4. Some seal lock agents harden slowly. You may have to wait for the seal lock adhesive to harden.
      Fig 2: Identifying Seal Lock Adhesive

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. GASKETS
   1. When necessary, use a sealer on gaskets to prevent leaks.
5. BOLTS, NUTS AND SCREWS
   1. Carefully follow all the specifications for tightening torques. Always use a torque wrench.
6. FUSES
   1. When inspecting a fuse, check that the wire of the fuse is not broken.
   2. When replacing fuses, be sure that the new fuse has the correct amperage rating. Do not exceed the rating or use one with a lower rating.
      Fig 3: Identifying Correct And Incorrect Fuses

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      ABBREVIATION CHART
      
      

      Illustration	Symbol	Part Name	Abbreviation
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	FUSE	FUSE
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	MEDIUM CURRENT FUSE	M-FUSE
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	HIGH CURRENT FUSE	H-FUSE
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	FUSIBLE LINK	FL
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	CIRCUIT BREAKER	CB

7. CLIPS
   1. The removal and installation methods of typical clips used for vehicle body parts are shown in the table below.

      HINT:

      If clips are damaged during work, always replace the damaged clip with a new one.

      Fig 4: Clip Remove/Install Reference Chart

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
8. CLAWS
   1. The removal and installation methods of typical claws used for vehicle body parts are shown in the table below.

      HINT:

      If claws are damaged during a procedure, always replace the damaged claws with a new caps or covers.

      Fig 5: Claws Remove/Install Reference Chart

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
9. REMOVAL AND INSTALLATION OF VACUUM HOSES
   1. To disconnect a vacuum hose, pull and twist from the end of the hose. Do not pull from the middle of the hose as this may damage the hose.
      Fig 6: Precaution For Vacuum Hose

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. When disconnecting vacuum hoses, use tags to identify where they should be reconnected.
   3. After completing any hose related repairs, double check that the vacuum hoses are properly connected. The label under the hood shows the proper layout.
   4. When using a vacuum gauge, never force the hose onto a connector that is too large. If a hose has been stretched, air may leak. Use a step-down adapter if necessary.
      Fig 7: Identifying Tag On Vacuum Hoses

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
10. TORQUE WHEN USING TORQUE WRENCH WITH EXTENSION TOOL
    Fig 8: Identifying Torque Wrench Dimension

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Use the formula below to calculate special torque values for situations where SST or an extension tool is combined with the torque wrench.

       Formula: T' = L2/(L1 + L2) * T 

       TORQUE SPECIFICATION
       
       

       T'	Reading of torque wrench {N*m (kgf*cm, ft.*lbf)}
       T	Torque {N*m (kgf*cm, ft.*lbf)}
       L1	Length of SST or extension tool {cm (In.)}
       L2	Length of torque wrench {cm (In.)}

       Fig 9: Identifying SST Dimension

       Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
       NOTE: If an extension tool or SST is combined with a torque wrench and the wrench is used to tighten to a torque specification in this information, the actual torque will be excessive and parts will be damaged.

The COROLLA MATRIX is equipped with a Supplemental Restraint System (SRS).

1. GENERAL NOTICE
   1. As malfunctions of the SRS are difficult to confirm, the Diagnostic Trouble Codes (DTCs) become the most important source of information when troubleshooting. When troubleshooting the SRS, always check the DTCs before disconnecting the battery.
   2. Work must be started at least 90 seconds after the ignition switch is turned off and after the cable is disconnected from the negative (-) battery terminal.

      The SRS is equipped with a back-up power source. If work is started within 90 seconds after turning the ignition switch off and disconnecting the cable from the negative (-) battery terminal, the SRS may deploy.

      When the cable is disconnected from the negative (-) battery terminal, clock and audio system memory is erased. Before starting work, make a note of the settings of each memory system. When work is finished, reset the clock and audio system as before.

      CAUTION: Never use a back-up power source (battery or other) to avoid erasing system memory. The back-up power source may inadvertently power the SRS and cause it to deploy.
   3. In minor collisions where the SRS does not deploy, the steering pad, front passenger airbag assembly, front seat side airbag assembly, curtain shield airbag assembly and front seat outer belt assembly should be inspected before further use of the vehicle.

      (See DISPOSAL for steering pad)

      (See DISPOSAL for front passenger airbag assembly)

      (See DISPOSAL for front seat side airbag assembly)

      (See DISPOSAL for curtain shield airbag assembly)

      (See DISPOSAL for front seat outer belt assembly)

   4. Never use SRS parts from another vehicle. When replacing parts, use new parts.
   5. Before repairs, remove the airbag sensor assemblies if impacts are likely to be applied to the sensor during repairs.
   6. Never disassemble and attempt to repair all airbag sensor assemblies and all airbag assemblies.
      1. Steering pad
      2. Front passenger airbag assembly
      3. Front seat side airbag assembly
      4. Curtain shield airbag assembly
      5. Front seat outer belt assembly
   7. Replace the airbag sensor assemblies and the airbag assemblies if: 1) damage has occurred from being dropped, or 2) cracks, dents or other defects in the case, bracket or connector are present.
   8. Do not directly expose the airbag sensor assembly or airbag assembly to hot air or flames.
   9. Use a voltmeter / ohmmeter with high impedance (minimum=10 kΩ) for troubleshooting electrical circuits.
   10. Information labels are attached to the SRS components. Follow the instructions on the labels.
   11. After work on the SRS is completed, check the SRS warning light.
2. SPIRAL CABLE
   1. The steering wheel must be fitted correctly to the steering column with the spiral cable at the neutral position, as cable disconnection and other problems may occur. Refer to the information about correct installation of the steering wheel (See INSTALLATION ).
   Fig 10: Identifying Steering Wheel Mark Location
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. STEERING PAD
   1. Always place a removed or new steering pad surface upward as shown in the illustration. Placing the steering pad the pad surface facing down could cause a serious accident if the airbag inflates. Also, do not place anything on top of the steering pad.
      Fig 11: Identifying Correct Position Of Removed Steering Pad

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Never measure the resistance of the airbag squib. This may cause the airbag to inflate, which could cause serious injury.
      Fig 12: Precaution - Never Measure Resistance Of Airbag Squib

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Grease or detergents of any kind should not be applied to the steering pad.
   4. Store the steering pad in an area where the ambient temperature is below 93°C (200°F), the humidity is not high and there is no electrical noise.
   5. When using electric welding anywhere on the vehicle, disconnect the center airbag sensor assembly connectors. These connectors contain shorting springs. This feature reduces the possibility of the airbag deploying due to current entering the squib wiring.
   6. When disposing of the vehicle or the steering pad by itself, the airbag should be deployed using SST before disposal (See DISPOSAL ). Activate the airbag in a safe place away from electrical noise.
4. FRONT PASSENGER AIRBAG ASSEMBLY
   1. Always place a removed or new front passenger airbag assembly with the pad surface facing upward as shown in the illustration. Placing the airbag assembly with the airbag inflation direction facing down could cause a serious accident if the airbag inflates.
      Fig 13: Identifying Correct Position Of Removed Front Passenger Airbag Assembly

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Never measure the resistance of the airbag squib. This may cause the airbag to inflate, which could cause serious injury.
      Fig 14: Precaution For Resistance Of Airbag Squib

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Grease or detergents of any kind should not be applied to the steering pad.
   4. Store the airbag assembly in an area where the ambient temperature is below 93°C (200°F), the humidity is not high and there is no electrical noise.
   5. When using electric welding anywhere on the vehicle, disconnect the center airbag sensor assembly connectors. These connectors contain shorting springs. This feature reduces the possibility of the airbag deploying due to current entering the squib wiring.
   6. When disposing of the vehicle or the airbag assembly unit by itself, the airbag should be deployed using SST before disposal (See DISPOSAL ). Activate in a safe place, away from electrical noise.
5. FRONT SEAT SIDE AIRBAG ASSEMBLY
   1. Always place a removed or new front seat side airbag assembly with the airbag inflation direction facing up.
   2. Never measure the resistance of the airbag squib. This may cause the airbag to inflate, which could cause serious injury.
      Fig 15: Precaution For Resistance Of Airbag Squib

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Grease or detergents of any kind should not be applied to the front seat side airbag assembly.
   4. Store the airbag assembly in an area where the ambient temperature is below 93°C (200°F), the humidity is not high and there is no electrical noise.
   5. When using electric welding anywhere on the vehicle, disconnect the center airbag sensor assembly connectors. These connectors contain shorting springs. This feature reduces the possibility of the airbag deploying due to current entering the squib wiring.
   6. When disposing of a vehicle or the airbag assembly unit by itself, the airbag should be deployed using SST before disposal (See DISPOSAL ). Activate in a safe place away from electrical noise.
6. CURTAIN SHIELD AIRBAG ASSEMBLY
   1. Always place a removed or new curtain shield airbag assembly in a clear plastic bag, and keep it in a safe place.
      Fig 16: Identifying Correct Position Of Removed Curtain Shield Airbag Assembly

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      CAUTION: The plastic bag is not reusable.
      NOTE: Never disassemble the curtain shield airbag assembly.
   2. Never measure the resistance of the airbag squib. This may cause the airbag to inflate, which could cause serious injury.
      Fig 17: Precaution For Resistance Of Airbag Squib

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Grease or detergents of any kind should not be applied to the front seat side airbag assembly.
   4. Store the airbag assembly in an area where the ambient temperature is below 93°C (200°F), the humidity is not high and there is no electrical noise.
   5. When using electric welding anywhere on the vehicle, disconnect the center airbag sensor assembly connectors. These connectors contain shorting springs. This feature reduces the possibility of the airbag deploying due to current entering the squib wiring.
   6. When disposing of a vehicle or the airbag assembly unit by itself, the airbag should be deployed using SST before disposal (See DISPOSAL ). Activate in a safe place away from electrical noise.
7. FRONT SEAT OUTER BELT ASSEMBLY (SEAT BELT PRETENSIONER)
   1. Never measure the resistance of the front seat outer belt. This may cause the pretensioner of the front seat outer belt to activate, which could cause serious injury.
      Fig 18: Precaution For Resistance Of Seat Outer Belt

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Never disassemble the front seat outer belt.
   3. Never install the front seat outer belt on another vehicle.
   4. Store the front seat outer belt in an area where the ambient temperature is below 80°C (176°F), the humidity is not high and there is no electrical noise.
   5. When using electric welding anywhere on the vehicle, disconnect the center airbag sensor assembly connectors. These connectors contain shorting springs. This feature reduces the possibility of the airbag deploying due to current entering the squib wiring.
   6. When disposing of a vehicle or the airbag assembly unit by itself, the airbag should be deployed using SST before disposal (See DISPOSAL ). Activate in a safe place away from electrical noise.
   7. As the front seat outer belt is hot after being activated, allow some time for it to cool down sufficiently before disposal. Never apply water to cool down the front seat outer belt.
   8. Grease, detergents, oil or water should not be applied to the front seat outer belt.
8. CENTER AIRBAG SENSOR ASSEMBLY
   1. Never reuse an center airbag sensor assembly that has been involved in a collision where the SRS has deployed.
   2. The connectors to the center airbag sensor assembly should be connected or disconnected with the sensor placed on the floor. If the connectors are connected or disconnected while the center airbag sensor assembly is not placed on the floor, the SRS may activate.
   3. Work must be started at least 90 seconds after the ignition switch is turned off and the cable is disconnected from the negative (-) battery terminal, even if only loosening the set bolts of the center airbag sensor assembly.
9. WIRE HARNESS AND CONNECTOR
   1. All the connectors in the system are a standard yellow color. If the SRS wire harness becomes disconnected or the connector becomes broken, repair or replace it.

1. REMOVAL AND INSTALLATION OF BATTERY TERMINAL
   NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.
   1. Before performing electronic work, disconnect the cable from the negative (-) battery terminal to prevent component and wire damage caused by accidental short circuits.
      Fig 19: Disconnecting Battery Negative Cable

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. When disconnecting the cable, turn the ignition switch and headlight dimmer switch off and loosen the cable nut completely. Perform these operations without twisting or prying the cable. Then disconnect the cable.
   3. Clock settings, radio settings, audio system memory, DTCs and other data are erased when the cable is disconnected from the negative (-) battery terminal. Write down any necessary data before disconnecting the cable.
2. HANDLING OF ELECTRONIC PARTS
   1. Do not open the cover or case of the ECU unless absolutely necessary. If the IC terminals are touched, the IC may be rendered inoperative by static electricity.
   2. Do not pull the wires when disconnecting electronic connectors. Pull the connector itself.
   3. Do not drop electronic components, such as sensors or relays. If they are dropped on a hard surface, they should be replaced.
   4. When cleaning the engine with steam, protect the electronic components, air filter and emission-related components from water.
      Fig 20: Precaution For Handling Of Electronic Parts

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   5. Never use an impact wrench to remove or install temperature switches or temperature sensors.
   6. When measuring the resistance between terminals of a wire connector, insert the tester probe carefully to prevent terminals from bending.

1. PLACE FOR REMOVING AND INSTALLING FUEL SYSTEM PARTS
   1. Work in a location with good air ventilation that does not have welders, grinders, drills, electric motors, stoves, or any other ignition sources.
   2. Never work in a pit or near a pit as vaporized fuel will collect in those places.
2. REMOVING AND INSTALLING FUEL SYSTEM PARTS
   1. Prepare a fire extinguisher before starting the operation.
   2. To prevent static electricity, install a ground wire to the fuel changer, vehicle and fuel tank, do not spray the surrounding area with water. Be careful when performing work in this area, as the work surface will become slippery. Do not clean up gasoline spills with water, as this may cause the gasoline to spread, and possibly create a fire hazard.
   3. Avoid using electric motors, working lights and other electric equipments that can cause sparks or high temperatures.
   4. Avoid using iron hammers as they may create sparks.
   5. Dispose of fuel-contaminated cloth separately using a fire resistant container.

1. If any metal particles enter inlet system parts, this may damage the engine.
2. When removing and installing inlet system parts, cover the openings of the removed parts and engine openings. Use gummed tape or other suitable materials.
3. When installing inlet system parts, check that no metal particles have entered the engine or the installed parts.
   Fig 21: Covering Openings Of Removed Parts And Engine Openings

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Before removing the hose, check the clamp position so that it can be reinstalled in the same position.
2. Replace any deformed or dented clamps with new ones.
3. When reusing a hose, attach the clamp on the clamp track portion of the hose.
4. For a spring type clamp, you may want to spread the tabs slightly after installation by pushing in the direction of the arrows as shown in the illustration.
   Fig 22: Handling Of Hose Clamps

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Install the antenna far away from the ECU and sensors of the vehicle electronic systems as possible.
2. Install an antenna feeder at least 20 cm (7.87 in.) away from the ECU and sensors of the vehicle electronic systems. For details about ECU and sensors locations, refer to the article on the applicable component(s).
3. Keep the antenna and feeder separate from other wirings as much as possible. This will prevent signals sent from the communication equipment from affecting vehicle equipment and vice-versa.
   Fig 23: Installing Antenna

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Check that the antenna and feeder are correctly adjusted.
5. Do not install any high-powered mobile communication system.

When testing with a 2 wheel drum tester such as a speedometer tester, a combination tester of the speedometer and brake, a chassis dynamometer, or when jacking up the front wheels and driving the wheels, always deactivate the TRAC system OFF before testing.

1. NOTICES WHEN USING DRUM TESTER
   1. Before beginning testing, disable the VSC. To disable the VSC, turn the ignition switch off and connect SST to terminals TS and CG of the DLC3.

      SST 09843-18040 

      NOTE:

      • Confirm that the VSC warning light blinks.
      • VSC system will be reset when the engine is restarted.
      • For safety, secure the vehicle with restraint chains while using a wheel dynamometer.
        Fig 24: Identifying DLC3 Connector Terminals

        Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. NOTICES OF RELATED OPERATIONS TO VSC
   1. Do not carry out unnecessary installation and removal as it might affect the adjustment of VSC related parts.
   2. Be sure to follow the instructions for work preparation and final confirmation of proper operation of the VSC system.

1. Use only unleaded gasoline.
2. Avoid idling the engine for more than 20 minutes.
3. Avoid performing unnecessary spark jump tests.
   1. Perform a spark jump test only when absolutely necessary. Perform this test as rapidly as possible.
   2. While testing, never race the engine.
4. Avoid a prolonged engine compression measurement. Engine compression measurements must be performed as rapidly as possible.
5. Do not run the engine when the fuel tank is nearly empty. This may cause the engine to misfire and create an extra load on the converter.