Introduction: Overview Lexus RX III

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1. GENERAL DESCRIPTION This Service Information is written in accordance with SAE J2008. Repair operations can be separated mainly into the following 3 processes: Diagnosis Removing / Installing, Replacing, Disassembling / Reassembling, Checking and Adjusting Final Inspection The following procedure is omitted from this Service Information. However, this procedure must be performed. Use a jack or lift to perform operations. Clean all removed parts. Perform a visual check before and after performing any work.
2. INDEX An alphabetical INDEX service information is provided at the end of the Service Information as a reference to help find the item to be repaired.
3. PREPARATION Use of Special Service Tools (SST) and Special Service Materials (SSM) may be required, depending on the repair procedure. Be sure to use SST and SSM when they are required and follow the work procedure properly. A list of SST and SSM is in the "Preparation" service information of this article.
4. REPAIR PROCEDURES A component illustration is placed under the title where necessary. Non-reusable parts, grease application areas, precoated parts and torque specifications are noted in the component illustrations. The following illustration is an example. Torque specifications, grease application areas and non-reusable parts are emphasized in the procedures. HINT: There are cases where such information can only be explained by using an illustration. In these cases, torque, oil and other information are described in the illustration. Only items with key points are described in the text. What to do and other details are explained using illustrations next to the text. Both the text and illustrations are accompanied by standard values and notices. Illustration What to do and where to do it Task heading What work will be performed Explanation text How to perform the task Information such as specifications and warnings, which are written in boldface text Illustrations of similar vehicle models are sometimes used. In these cases, minor details may be different from the actual vehicle. Procedures are presented in a step-by-step format.
5. SERVICE SPECIFICATIONS Specifications are presented in boldface text throughout the Service Information. The specifications are also found in the "Service Specifications" service information for reference.
6. TERM DEFINITIONS CAUTION Possibility of injury to you or other people. NOTICE Possibility of damage to components being repaired. HINT Provides additional information to help you perform repairs.
7. INTERNATIONAL SYSTEM OF UNITS The units used in this Service Information comply with the International System of Units (SI UNIT) standard. Other units from the metric system and the English systems are also provided. Example: Torque: 30 N*m (310 kgf*cm, 22 ft.*lbf)

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1. VEHICLE IDENTIFICATION NUMBER The vehicle identification number is stamped on the vehicle body and on the certification label as shown in the illustration. A Vehicle Identification Number B Certification Label
2. ENGINE SERIAL NUMBER AND TRANSAXLE SERIAL NUMBER The engine serial number is stamped on the cylinder block of the engine as shown in the illustration. A 2GR-FE Engine Serial Number The transaxle serial number is stamped on the case as shown in the illustration. A U660E and U660F Transaxle Serial Number

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1. BASIC REPAIR HINT HINTS ON OPERATIONS 1 Attire Always wear a clean uniform. A hat and safety shoes must be worn. 2 Vehicle protection Prepare a grille cover, fender cover, seat cover and floor mat before starting work. 3 Safety procedures When working with 2 or more persons, be sure to check the safety of one another. When working with the engine running, make sure to provide ventilation for exhaust fumes in the workshop. If working on high temperature, high pressure, rotating, moving, or vibrating parts, wear appropriate safety equipment and take extra care not to injure yourself or others. When jacking up the vehicle, be sure to support the specified locations with safety stands. When lifting up the vehicle, use appropriate safety equipment. 4 Preparation of tools and measuring equipment Before starting work, prepare a tool stand, SST, measuring equipment, oil, and any replacement parts required. 5 Removal and installation, disassembly and assembly operations Diagnose with a thorough understanding of proper procedures and of the reported problem. Before removing any parts, check the general condition of the assembly and for deformation and damage. If the procedure is complicated, take notes. For example, note the total number of electrical connections, bolts, or hoses removed. Add matchmarks to ensure reassembly of components in the original positions. Temporarily mark hoses and their fittings if needed. Clean and wash the removed parts if necessary and assemble them after a thorough check. 6 Removed parts Place the removed parts in a separate box to avoid mixing them up with new parts or contaminating the new parts. For non-reusable parts such as gaskets, O-rings and self-locking nuts, replace them with new ones as instructed in this Service Information. Retain the removed parts for customer inspection, if requested. JACKING UP AND SUPPORTING VEHICLE Care must be taken when jacking up and supporting the vehicle. Be sure to lift and support the vehicle at the proper locations. PRECOATED PARTS TEXT IN ILLUSTRATION *1 Seal Lock Adhesive Precoated parts are bolts and nuts that are coated with seal lock adhesive at the factory. If a precoated part is retightened, loosened or moved in any way, it must be recoated with the specified adhesive. When reusing a precoated part, clean off the old adhesive and dry the part with compressed air. Then apply new seal lock adhesive appropriately to that part. Some seal lock agents harden slowly. You may have to wait for the seal lock adhesive to harden. GASKETS When necessary, use a sealer on gaskets to prevent leaks. BOLTS, NUTS AND SCREWS Carefully follow all the specifications for tightening torque. Always use a torque wrench. FUSES TEXT IN ILLUSTRATION *1 INCORRECT *2 CORRECT When inspecting a fuse, check that the wire of the fuse is not broken. If the wire of a fuse is broken, confirm that there are no shorts in its circuit. When a fuse is replaced, a fuse with the same amperage rating must be used. Illustration Symbol Part Name Abbreviation FUSE FUSE MEDIUM CURRENT FUSE M-FUSE HIGH CURRENT FUSE H-FUSE FUSIBLE LINK FL CIRCUIT BREAKER CB CLIPS 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 a procedure, always replace the damaged clips with new ones. Shape (Example) Removal/Installation Remove the clips with a clip remover or pliers. Remove the clips with a clip remover or screwdriver. Remove the clips with a wide scraper to prevent panel damage. Remove the clips by pushing the center pin through and prying out the shell. Remove the clips by unscrewing the center pin and prying out the shell. Remove the clips by prying out the pin and then prying out the shell. CLAWS 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 cap or cover that has damaged claws with a new one. Shape (Example) Illustration Procedure Using a screwdriver, disengage the claws and remove the cap or cover. Using a screwdriver, disengage the claws and remove the cap or cover. Using a screwdriver, detach the claws and remove the cap or cover. HINGES, GUIDES, CLAMPS, PINS, ETC. The removal and installation methods of typical hinges, guides, clamps and pins used for vehicle body parts are shown in the table below. HINT: If clamps are damaged during a procedure, always replace the cap or cover that has damaged clamps with a new one. Shape (Example) Removal/Installation REMOVAL AND INSTALLATION OF VACUUM HOSES To disconnect a vacuum hose, pull and twist it from the end of the hose. Do not pull it from the middle of the hose as this may damage the hose. TEXT IN ILLUSTRATION *1 INCORRECT *2 CORRECT When disconnecting vacuum hoses, use tags to identify where they should be reconnected. After completing any hose related repairs, double-check that the vacuum hoses are properly connected. The label under the hood shows the proper layout. 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. TORQUE WHEN USING TORQUE WRENCH WITH EXTENSION TOOL Use the formula below to calculate special torque values for situations where SST or an extension tool is combined with a torque wrench. Formula T' = (L2/(L1 + L2))*T 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.)} NOTE: If an extension tool or SST is combined with a torque wrench and used to tighten to a torque specification in this Service Information , the actual torque will be excessive and parts will be damaged.
2. FOR VEHICLES EQUIPPED WITH SRS AIRBAG AND SEAT BELT PRETENSIONER This vehicle is equipped with a Supplemental Restraint System (SRS). WARNING: Before performing pre-disposal deployment of any SRS component, review and closely follow all applicable environmental and hazardous material regulations. Pre-disposal deployment may be considered hazardous material treatment. Failure to carry out the service operations in the correct sequence could cause the SRS to unexpectedly deploy during servicing and lead to serious injury. Furthermore, if a mistake is made when servicing the SRS, it is possible that the SRS may fail to operate properly. Before servicing (including removal or installation of parts, inspection or replacement), be sure to read the following service information carefully. GENERAL NOTICE 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 for DTCs before disconnecting the battery. Work must be started at least 90 seconds after the engine 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 engine 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, the clock and audio system memory will be cleared. 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. WARNING: Never use a back-up power source (battery or other) to avoid clearing the system memory. The back-up power source may inadvertently power the SRS and cause it to deploy. If the vehicle has been involved in a minor collision where the SRS does not deploy, the steering pad, front passenger airbag assembly, knee airbag assembly, seat side airbag assembly, curtain shield airbag assembly and seat outer belt assembly should be inspected before further use of the vehicle. Never use SRS parts from another vehicle. When replacing parts, use new parts. Before repairs, remove the airbag sensor assemblies if impacts are likely to be applied to the sensor during repairs. Never disassemble and attempt to repair any airbag sensor assemblies or airbag assemblies. Steering pad Front passenger airbag assembly Knee airbag assembly Seat side airbag assembly Curtain shield airbag assembly Seat outer belt assembly 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. Do not directly expose the airbag sensor assemblies or airbag assemblies to hot air or flames. Use a voltmeter/ohmmeter with high impedance (minimum = 10 kohms) for troubleshooting electrical circuits. Information labels are attached to the SRS components. Follow the instructions on the labels. After work on the SRS is completed, check the SRS warning light. SPIRAL CABLE TEXT IN ILLUSTRATION *1 Alignment Mark The steering wheel must be fitted correctly to the steering column with the spiral cable at the neutral position. Otherwise, cable damage and other problems may occur. Refer to the information about correct installation of the steering wheel. Refer to «INSTALLATION». STEERING PAD Always place a removed or new steering pad with the surface facing upward as shown in the illustration. Placing the steering pad with the pad surface facing downward could cause a serious accident if the airbag deploys. Also, do not place anything on top of the steering pad. TEXT IN ILLUSTRATION *1 CORRECT *2 INCORRECT Never measure the resistance of the airbag squib. This may cause the airbag to deploy, which could cause serious injury. Grease or detergents of any kind should not be applied to the steering pad. 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. Before using an electric welder 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. When disposing of the vehicle or the steering pad by itself, the airbag should be deployed using SST before disposal. Refer to «DISPOSAL». Deploy the airbag in a safe place away from electrical noise. FRONT PASSENGER AIRBAG ASSEMBLY 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 deployment direction facing downward could cause a serious accident if the airbag deploys. TEXT IN ILLUSTRATION *1 CORRECT *2 INCORRECT Never measure the resistance of the airbag squib. This may cause the airbag to deploy, which could cause serious injury. Grease or detergents of any kind should not be applied to the front passenger airbag assembly. 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. Before using an electric welder 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. When disposing of the vehicle or the airbag assembly unit by itself, the airbag should be deployed using SST before disposal. Refer to «DISPOSAL». Deploy the airbag in a safe place away from electrical noise. KNEE AIRBAG ASSEMBLY Always place a removed or new knee airbag assembly with the airbag deployment direction facing upward as shown in the illustration. Placing the airbag assembly with the airbag deployment direction facing downward could cause a serious accident if the airbag deploys. TEXT IN ILLUSTRATION *1 CORRECT *2 INCORRECT Never measure the resistance of the airbag squib. This may cause the airbag to deploy, which could cause serious injury. Grease or detergents of any kind should not be applied to the knee airbag assembly. Store the knee 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. Before using an electric welder 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. When disposing of a vehicle or knee airbag assembly unit by itself, the airbag should be deployed using SST before disposal. Refer to «DISPOSAL» (for driver side). Refer to «DISPOSAL» (for front passenger side). Deploy in a safe place away from electrical noise. SEAT SIDE AIRBAG ASSEMBLY Always place a removed or new seat side airbag assembly with the airbag deployment direction facing upward. Never measure the resistance of the airbag squib. This may cause the airbag to deploy, which could cause serious injury. Grease or detergents of any kind should not be applied to the seat side airbag assembly. 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. Before using an electric welder 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. When disposing of a vehicle or the airbag assembly unit by itself, the airbag should be deployed using SST before disposal. Refer to «DISPOSAL» (for front side). Refer to «DISPOSAL» (for rear side). Deploy the airbag in a safe place away from electrical noise. CURTAIN SHIELD AIRBAG ASSEMBLY Always place a removed or new curtain shield airbag assembly in a clear plastic bag, and keep it in a safe place. TEXT IN ILLUSTRATION *1 CORRECT *2 INCORRECT *3 Clear Plastic Bag - - WARNING: The plastic bag should be disposed of after use. NOTE: Never disassemble the curtain shield airbag assembly. Never measure the resistance of the airbag squib. This may cause the airbag to deploy, which could cause serious injury. Grease or detergents of any kind should not be applied to the curtain shield airbag assembly. 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. Before using an electric welder 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. When disposing of a vehicle or the airbag assembly unit by itself, the airbag should be deployed using SST before disposal. Refer to «DISPOSAL». Deploy the airbag in a safe place away from electrical noise. SEAT OUTER BELT ASSEMBLY (SEAT BELT PRETENSIONER) Never measure the resistance of the seat outer belt assembly. This may cause the pretensioner of the seat outer belt assembly to activate, which could cause serious injury. Never disassemble the seat outer belt assembly. Never install the seat outer belt assembly on another vehicle. Store the seat outer belt assembly in an area where the ambient temperature is below 80°C (176°F), the humidity is not high and there is no electrical noise. Before using an electric welder 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. When disposing of a vehicle or the seat outer belt assembly unit by itself, the seat outer belt assembly should be activated before disposal. Refer to «DISPOSAL» (for front side). Refer to «DISPOSAL» (for rear side). Activate the seat outer belt assembly in a safe place away from electrical noise. As the seat outer belt assembly is hot after being activated, allow some time for it to cool down sufficiently before disposal. Never apply water to cool down the seat outer belt assembly. Grease, detergents, oil or water should not be applied to the seat outer belt assembly. CENTER AIRBAG SENSOR ASSEMBLY Never reuse a center airbag sensor assembly that has been involved in a collision where the SRS has deployed. The connectors to the center airbag sensor assembly should be connected or disconnected with the sensor installed to the vehicle. If the connectors are connected or disconnected while the center airbag sensor assembly is not installed, the SRS may activate. Work must be started at least 90 seconds after the engine switch is turned off and the cable is disconnected from the negative (-) battery terminal, even if only loosening the bolts of the center airbag sensor assembly. WIRE HARNESS AND CONNECTOR All the connectors in the system are a standard yellow color. If an SRS wire harness has an open circuit or a connector is broken, replace it.
3. ELECTRONIC CONTROL TEXT IN ILLUSTRATION *1 Cable *2 Negative (-) Battery Terminal NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal. After the engine switch is turned off, the display and navigation module display (HDD navigation system) records various types of memory and settings. As a result, after turning the engine switch off, make sure to wait at least 60 seconds before disconnecting the cable from the negative (-) battery terminal. DISCONNECTING AND RECONNECTING NEGATIVE BATTERY CABLE Before performing work on electronic components, disconnect the cable from the negative (-) battery terminal to prevent damage to the electrical system or components. When disconnecting the cable, turn the engine switch and headlight switch off and loosen the cable nut completely. Perform these operations without twisting or prying the cable. Then disconnect the cable. Clock settings, radio settings, audio system memory, DTCs and other data will be cleared when the cable is disconnected from the negative (-) battery terminal. Write down any necessary data before disconnecting the cable. HANDLING OF ELECTRONIC PARTS TEXT IN ILLUSTRATION *1 INCORRECT 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. Do not pull on the wires when disconnecting electronic connectors. Pull on the connector itself. Do not drop electronic components, such as sensors or relays. If they are dropped on a hard surface, they should be replaced. When cleaning the engine with steam, protect the electronic components, air filter and emission-related components from water. Never use an impact wrench to remove or install temperature switches or temperature sensors. When measuring the resistance between terminals of a wire connector, insert the tester probe carefully to prevent the terminals from bending.
4. REMOVAL AND INSTALLATION OF FUEL CONTROL PARTS PLACE FOR REMOVING AND INSTALLING FUEL SYSTEM PARTS Work in a location with good air ventilation that does not have welders, grinders, drills, electric motors, stoves, or any other ignition sources nearby. Never work in a pit or near a pit as fuel vapors will collect there. REMOVING AND INSTALLING FUEL SYSTEM PARTS Prepare a fire extinguisher before starting work. To prevent static electricity, install a ground wire to the fuel changer and vehicle, and do not spray the surrounding area with water. Be careful when performing work in this area, as the floor 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. Avoid using electric motors, work lights and other electric equipment that can cause sparks or high temperatures. Avoid using iron hammers as they may create sparks. Dispose of fuel-contaminated cloth separately using a fire resistant container.
5. REMOVAL AND INSTALLATION OF ENGINE INTAKE PARTS If any metal particles enter intake system parts, this may damage the engine. When removing and installing intake system parts, cover the openings of the removed parts and engine openings. Use adhesive tape or other suitable materials. When installing intake system parts, check that no metal particles have entered the engine or installed parts.
6. HANDLING OF HOSE CLAMPS TEXT IN ILLUSTRATION *1 Clamp Track *2 Spring Type Clamp Before removing a hose, check the clamp position so that it can be reinstalled in the same position. Replace any deformed or dented clamps with new ones. When reusing a hose, attach the clamp on the clamp track portion of the hose. For a spring type clamp, it may be necessary to spread the tabs slightly after installation by pushing them in the direction of the arrows as shown in the illustration.
7. FOR VEHICLES EQUIPPED WITH MOBILE COMMUNICATION SYSTEMS Install an antenna as far away from the ECU and sensors of the vehicle electronic systems as possible. Install an antenna and feeder at least 20 cm (7.87 in.) away from the ECU and sensors of the vehicle electronic systems. For details about ECU and sensor locations, refer to appropriate the service information on the applicable components. Keep the antenna and feeder separate from other wiring as much as possible. This will prevent signals sent from the communication equipment from affecting vehicle equipment and vice versa. Check that the antenna and feeder are correctly adjusted. Do not install a high-powered mobile communication system.
8. HEADLIGHT INSPECTION OR MAINTENANCE When the headlight dimmer switch assembly is set to HEAD, do not touch the discharge headlight's high-voltage socket area. NOTE: When performing inspection or maintenance, the discharge headlight precautions must be followed. When the headlights are illuminated, do not cover the headlights for 3 minutes or more. TEXT IN ILLUSTRATION *1 Illumination for 3 minutes or more prohibited if covered NOTE: As the headlight's outer lens is made of resin, the resulting heat created when covering the headlight for an extended period of time may deform the headlight.
9. FOR VEHICLES EQUIPPED WITH AIR SUSPENSION SYSTEM Before raising the vehicle using a jack or lift, or working under the vehicle, make sure to disable vehicle height control using the height control OFF switch. HINT: When vehicle height control is disabled using the height control OFF switch, "HEIGHT CONTROL OFF" will be shown on the multi-information display in the combination meter. The history that vehicle height control has been disabled using the height control OFF switch will remain even if the cable is disconnected from the negative (-) battery terminal. Vehicle height control disabled using the height control OFF switch will resume when the vehicle speed reaches 30 km/h. In order to resume vehicle height control disabled using the height control OFF switch, push the height control OFF switch again with the engine running and the engine switch on (IG).
10. FOR VEHICLES EQUIPPED WITH TRACTION CONTROL (TR(A)C) AND VEHICLE STABILITY CONTROL (VSC) SYSTEMS When testing with a 2-wheel drum tester such as a speedometer tester, a combination speedometer and brake tester, or a chassis dynamometer, or when jacking up the front wheels and turning the wheels, perform the following procedure to enter inspection mode and disable the TR(A)C and VSC systems. Refer to «PRECAUTION». HINT: The vehicle may slip unexpectedly out of the dynamometer because of TR(A)C and VSC operation. Pressing the VSC OFF switch (for vehicles with a VSC OFF switch) does not disable TR(A)C and VSC operation completely. NOTE: Make sure that the VSC warning light is blinking. Secure the vehicle with chains for safety.
11. WHEN SERVICING ACTIVE TORQUE CONTROL AWD VEHICLES NOTE: In the case of using speedometer tester, brake tester, or chassis dynamometer and so on, there is some possibility of differential between the front wheels and rear wheels. Therefore, please switch AWD mode to "AWD test mode" before doing tests or remove the fuse before doing tests and delete the diagnostic code "C1298"after the tests. WHEN USING A SPEEDOMETER TESTER NOTE: Inspection should be done using the front wheels. Do not brake or accelerate suddenly. Maximum vehicle speed must be less than 60 km/h (37 mph) (when using free rollers to support the rear wheels, vehicle speed must be less than 50 km/h (31 mph)). Driving time should be less than 1 minute. Follow all usage and safety procedures in the operator's Service Information for the speedometer tester. Place the front wheels onto the rollers. Enter inspection mode to disable TR(A)C and VSC control. Place the rear wheels on free rollers or use safety stands to allow the rear wheels to rotate freely. Secure the vehicle with suitable chains or straps. Start the engine, and then measure the vehicle speed while increasing the speed gradually with the shift lever in D. After the test is finished, decrease the speed gradually, and then stop the vehicle. WHEN USING A BRAKE TESTER NOTE: A high-speed type brake tester cannot be used. Vehicle speed should be less than 0.5 km/h (0.3 mph). Follow all usage and safety procedures in the operator's Service Information for the brake tester. Place the wheels to be tested (front or rear) onto the rollers. Move the shift lever to N. Start the engine to allow normal brake booster operation. Operate the brakes to perform the test. WHEN USING A CHASSIS DYNAMOMETER Enter inspection mode to disable TR(A)C and VSC control. Follow the instructions shown in the illustration. NOTE: Do not brake or accelerate suddenly. Confirm that the vehicle is securely immobilized. Follow all usage and safety procedures in the operator's Service Information for the chassis dynamometer. Be sure to follow the instructions specified in the illustration. Failure to do so may cause deterioration of AWD system function, malfunction of drivetrain components and risk of the vehicle jumping off the dynamometer. TEXT IN ILLUSTRATION *1 Two-wheel chassis dynamometer *2 Four-wheel chassis dynamometer (directly-connected) *3 Four-wheel chassis dynamometer (except directly-connected) *4 remove *5 prohibited - WHEN USING AN ON-VEHICLE BALANCER Raise the vehicle until all 4 wheels are off the ground. Support the vehicle with safety stands at an appropriate height. Make sure that vehicle does not lean in any direction, and that the tires are completely clear of the floor. Place the vibration pick-up unit into position for the wheel to be measured*1. Release the parking brake. Check that no dragging force exists when turning each wheel by hand. Put the wheel balancer in position. Wheel balance measurement should be done by using both the engine and the wheel balancer drive roller to spin the wheels. HINT: *1: Different on-vehicle wheel balancers have different requirements for mounting the vibration pick-up unit(s). Refer to the operator's Service Information for the wheel balancer to confirm requirements for use. NOTE: Start the engine and then increase the vehicle speed gradually with the shift lever in D. Do not accelerate or decelerate suddenly. Deceleration should be done by braking gradually. Make sure that no one is standing in-line with the spinning wheels. Measurement should be done quickly. Confirm that the vehicle is securely immobilized. Follow all usage and safety procedures in the operator's manual for the wheel balancer.
12. WHEN TOWING ACTIVE TORQUE CONTROL AWD VEHICLES Use one of the following methods to tow the vehicle. If the vehicle has trouble with the chassis or drive train, use method 1 (flat bed truck). NOTE: Do not use any towing method other than those shown above. The following towing methods shown below are dangerous and can damage the vehicle, so do not use them. Do not tow the vehicle with only two wheels on the ground. Do not use a sling-type towing method either from the front or rear. NOTE: If these towing methods are used either from the front or rear, the following may occur. The drive train may overheat and be damaged and the wheels may off the dolly. In addition, if the vehicle is equipped with the VSC system, the system will apply the brakes to the rotating wheels.
13. FOR VEHICLES EQUIPPED WITH CATALYTIC CONVERTER WARNING: If a large amount of unburned gasoline or gasoline vapors flow into the converter, it may cause converter overheating and create a fire hazard. To prevent this, observe the following precautions: Use only unleaded gasoline. Avoid idling the engine for more than 20 minutes. Avoid performing unnecessary spark tests. Perform a spark test only when absolutely necessary. Perform this test as rapidly as possible. While testing, never race the engine unless instructed. Avoid a prolonged engine compression measurement. Engine compression measurements must be performed as rapidly as possible. 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.
14. INSPECTION AND ADJUSTMENT OF JOINT ANGLE DURING REMOVAL AND INSTALLATION OF PROPELLER SHAFT (AWD) When performing operations which involve the removal and installation of the propeller shaft, always check the joint angle. Make adjustments if necessary. Refer to «INSTALLATION». TEXT IN ILLUSTRATION *1 No. 1 Joint Angle *2 No. 4 Joint Angle

GENERAL INFORMATION

1. A large number of ECU controlled systems are used in this vehicle. In general, ECU controlled systems are considered to be very intricate, requiring a high level of technical knowledge to troubleshoot. However, most problem checking procedures only involve inspecting the ECU controlled system circuits one by one. An adequate understanding of the system and a basic knowledge of electricity is enough to perform effective troubleshooting, accurate diagnosis and necessary repairs.

1. (For using the Techstream*) HINT: *: The Techstream is the name for the diagnostic tester in North America. Before using the Techstream, read the operator's manual thoroughly. If the Techstream cannot communicate with the ECU controlled systems when connected to the DLC3 with the engine switch on (IG) and the Techstream turned on, there is a problem on the vehicle side or the Techstream side. If communication is possible when the Techstream is connected to another vehicle, inspect the diagnosis data link line (bus (+) line), CANH and CANL lines, and the power circuits for the vehicle ECUs. If communication is still not possible when the Techstream is connected to another vehicle, the problem is probably in the Techstream itself. Perform the Self Test procedure outlined in the Techstream operator's manual.

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1. TROUBLESHOOTING PROCEDURES The troubleshooting procedures consist of diagnosis procedures for when a DTC is stored and diagnosis procedures for when no DTC is stored. The basic idea is explained in the following table. Procedure Type Details Troubleshooting Method DTC Based Diagnosis The diagnosis procedure is based on the DTC that is stored. The malfunctioning part is identified based on the DTC detection conditions using a process of elimination. The possible trouble areas are eliminated one-by-one by use of the Techstream and inspection of related parts. Symptom Based Diagnosis (No DTCs stored) The diagnosis procedure is based on problem symptoms. The malfunctioning part is identified based on the problem symptoms using a process of elimination. The possible trouble areas are eliminated one-by-one by use of the Techstream and inspection of related parts. Vehicle systems are complex and use many ECUs that are difficult to inspect independently. Therefore, a process of elimination is used, where components that can be inspected individually are inspected, and if no problems are found in these components, the related ECU is identified as the problem and replaced. It is extremely important to ask the customer about the environment and the conditions present when the problem occurred (Customer Problem Analysis). This makes it possible to simulate the conditions and confirm the symptom. If the symptom cannot be confirmed or the DTC does not recur, the malfunctioning part may not be identified using the troubleshooting procedure, and the ECU for the related system may be replaced even though it is not defective. If this happens, the original problem will not be solved. In order to prevent endless expansion of troubleshooting procedures, the troubleshooting procedures are written with the assumption that multiple malfunctions do not occur simultaneously for a single problem symptom. To identify the malfunctioning part, troubleshooting procedures narrow down the target by separating components, ECUs and wire harnesses during the inspection. If the wire harness is identified as the cause of the problem, it is necessary to inspect not only the connections to components and ECUs but also all of the wire harness connectors between the component and the ECU.
2. DESCRIPTION Each system data and the Diagnostic Trouble Codes (DTCs) can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.
3. CHECK DLC3 The vehicle ECUs use ISO 15765-4 communication protocol. The terminal arrangement of the DLC3 complies with ISO 15031-3 and matches the ISO 15765-4 format. Symbol Terminal No. Name Reference Terminal Result Condition SIL 7 Bus "+" line 5 - Signal ground Pulse generation During transmission CG 4 Chassis ground Body ground 1 ohms or less Always SG 5 Signal ground Body ground 1 ohms or less Always BAT 16 Battery positive Body ground 11 to 14 V Always CANH 6 CAN "High" line 14 - CANL 54 to 69 ohms engine switch off* Battery positive 6 kohms or higher engine switch off* 4 - CG 200 ohms or higher engine switch off* CANL 14 CAN "Low" line Battery positive 6 kohms or higher engine switch off* 4 - CG 200 ohms or higher engine switch off* NOTE: *: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the engine switch, any other switches or the doors. If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector.

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1. BASIC INSPECTION WHEN MEASURING RESISTANCE OF ELECTRONIC PARTS Unless otherwise stated, all resistance measurements are standard values measured at an ambient temperature of 20°C (68°F). Resistance measurements may be inaccurate if measured at high temperatures, i.e. immediately after the vehicle has been running. Measurements should be made after the engine has cooled down. HANDLING CONNECTORS TEXT IN ILLUSTRATION *1 INCORRECT *2 INCORRECT *3 CORRECT When disconnecting a connector, first squeeze the mating connector housing halves tightly together to release the lock, and then press the lock claw and separate the connector. When disconnecting a connector, do not pull on the harnesses. Grasp the connector directly and separate it. Before connecting a connector, check that there are no deformations, damage, looseness or missing terminals. When connecting a connector, press firmly until it locks with a "click" sound. If checking a connector with a TOYOTA electrical tester, check the connector from the backside (harness side) using a mini test lead. NOTE: As a waterproof connector cannot be checked from the backside, check it by connecting a sub-harness. Do not damage the terminals by moving the inserted tester needle. CHECKING CONNECTORS TEXT IN ILLUSTRATION *1 Core Wire *2 Looseness of Crimping *3 Terminal Deformation *4 Pull Lightly Checking when a connector is connected: Squeeze the connectors together to confirm that they are fully connected and locked. Checking when a connector is disconnected: Check by pulling the wire harness lightly from the backside of the connector. Look for unlatched terminals, missing terminals, loose crimps or broken conductor wires. Visually check for corrosion, metallic or foreign matter and water, and bent, rusted, overheated, contaminated or deformed terminals. Checking the contact pressure of the terminal: Prepare a spare male terminal. Insert it into a female terminal, and check for ample tension when inserting and after full engagement. NOTE: When testing a gold-plated female terminal, always use a gold-plated male terminal. CONNECTOR TERMINAL REPAIR METHOD TEXT IN ILLUSTRATION *1 CORRECT *2 INCORRECT If there is any foreign matter on the terminal, clean the contact point with compressed air or a cloth. Never rub the contact point using sandpaper as the plating may come off. If there is abnormal contact pressure, replace the female terminal. If the male terminal is gold-plated (gold color), use a gold-plated female terminal; if it is silver-plated (silver color), use a silver-plated female terminal. Damaged, deformed or corroded terminals should be replaced. If the terminal does not lock into the housing, the housing may have to be replaced. WIRE HARNESS HANDLING TEXT IN ILLUSTRATION *1 INCORRECT *2 INCORRECT *3 INCORRECT If removing a wire harness, check the wiring and clamps before proceeding so that it can be restored in the same way. Never twist, pull or slacken the wire harness more than necessary. The wire harness should never come into contact with any high temperature part, rotating, moving, vibrating or sharp-edged parts. Avoid contact with panel edges, screw tips and other sharp items. When installing parts, never pinch the wire harness. Never cut or break the cover of the wire harness. If it is cut or broken, repair it with insulating tape or replace the wire harness.
2. CHECK FOR OPEN CIRCUIT For an open circuit in the wire harness in (Scheme 1), measure the resistance and voltage as follows: Check the resistance. Disconnect connectors A and C and measure the resistance between the terminals of the connectors. Standard Resistance (Scheme 2) Tester Connection Specified Condition Connector A terminal 1 - Connector C terminal 1 10 kohms or higher Connector A terminal 2 - Connector C terminal 2 Below 1 ohms HINT: Measure the resistance while lightly shaking the wire harness vertically and horizontally. If the results match the values specified above, an open circuit exists between terminal 1 of connector A and terminal 1 of connector C. Disconnect connector B and measure the resistance between the terminals of the connectors. Standard Resistance (Scheme 3) Tester Connection Specified Condition Connector A terminal 1 - Connector B1 terminal 1 Below 1 ohms Connector B2 terminal 2 - Connector C terminal 2 10 kohms or higher If the results match the values specified above, an open circuit exists between terminal 1 of connector B2 and terminal 1 of connector C. Check the voltage. In a circuit in which voltage is applied to the ECU connector terminal, an open circuit can be checked by conducting a voltage check. With each connector still connected, measure the voltage between body ground and the following terminals (in this order): 1) terminal 1 of connector A, 2) terminal 1 of connector B, and 3) terminal 1 of connector C. Standard Voltage (Scheme 4) Tester Connection Specified Condition Connector A terminal 1 - Body ground 5 V Connector B terminal 1 - Body ground 5 V Connector C terminal 1 - Body ground Below 1 V If the results match the values specified above, an open circuit exists in the wire harness between terminal 1 of connector B and terminal 1 of connector C.
3. CHECK FOR SHORT CIRCUIT If a wire in the harness is shorted to ground (Scheme 5), locate the shorted service information by measuring the resistance as follows: Check the resistance to body ground. Disconnect connectors A and C and measure the resistance. Standard Resistance (Scheme 6) Tester Connection Specified Condition Connector A terminal 1 - Body ground Below 1 ohms Connector A terminal 2 - Body ground 10 kohms or higher HINT: Measure the resistance while lightly shaking the wire harness vertically and horizontally. If the results match the values specified above, a short circuit exists between terminal 1 of connector A and terminal 1 of connector C. Disconnect connector B and measure the resistance. Standard Resistance (Scheme 7) Tester Connection Specified Condition Connector A terminal 1 - Body ground 10 kohms or higher Connector B2 terminal 2 - Body ground Below 1 ohms If the results match the values specified above, a short circuit exists between terminal 1 of connector B2 and terminal 1 of connector C.
4. CHECK AND REPLACE ECU NOTE: The connector should not be disconnected from the ECU. Perform the inspection from the backside of the connector on the wire harness side. When no measuring condition is specified, perform the inspection with the engine stopped and the engine switch on (IG). Check that the connectors are fully seated. Check for loose, corroded or broken wires. First, check the ECU ground circuit. If it is faulty, repair it. If it is normal, the ECU could be faulty. Temporarily replace the ECU with a normally functioning one and check if the symptoms occur. If the trouble symptoms disappear, replace the original ECU. Measure the resistance between the ECU ground terminal and body ground. TEXT IN ILLUSTRATION *1 Ground Standard resistance Below 1 ohms Disconnect the ECU connector. Check the ground terminals on the ECU side and wire harness side for bent terminals, corrosion or foreign matter. Lastly, check the contact pressure of the female terminals. TEXT IN ILLUSTRATION *1 Component without harness connected (ECU) *2 Ground *3 Front view of wire harness connector (to ECU) *4 Ground

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1. OPERATION FLOW HINT: Perform troubleshooting in accordance with the procedure below. The following is an outline of basic troubleshooting procedure. Confirm the troubleshooting procedure for the circuit you are working on before beginning troubleshooting. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step CUSTOMER PROBLEM ANALYSIS Ask the customer about the conditions and environment when the problem occurred. NEXT: Go to next step INSPECT BATTERY VOLTAGE Standard voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step. NEXT: Go to next step SYMPTOM CONFIRMATION AND DTC (AND FREEZE FRAME DATA) CHECK Visually check the wire harnesses, connectors and fuses for open and short circuits. Warm up the engine to the normal operating temperature. Confirm the problem symptoms and conditions, and check for DTCs. Result Result Proceed to DTC is output A DTC is not output B B --> GO TO STEP f A: Go to next step DTC CHART Find the output DTC in the DTC chart. Look at the Trouble Area column for a list of potentially malfunctioning circuits and/or parts. NEXT --> GO TO STEP g . PROBLEM SYMPTOMS CHART Find the problem symptoms in the problem symptoms table. Look at the Suspected Area column for a list of potentially malfunctioning circuits and/or parts. NEXT: Go to next step CIRCUIT INSPECTION OR PARTS INSPECTION Identify the malfunctioning circuit or part. NEXT: Go to next step ADJUST, REPAIR OR REPLACE Adjust, repair or replace the malfunctioning circuit or parts. NEXT: Go to next step CONFIRMATION TEST After the adjustment, repairs or replacement of components, confirm that the malfunction no longer exists. If the malfunction does not recur, perform a confirmation test under the same conditions and in the same environment as when the malfunction first occurred. NEXT --> END
2. CUSTOMER PROBLEM ANALYSIS HINT: When troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred. Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases. The following 5 items are important points for problem analysis: What Vehicle model, system name When Date, time, occurrence frequency Where Road conditions Under what conditions? Driving conditions, weather conditions How did it happen? Problem symptoms
3. SYMPTOM CONFIRMATION AND DIAGNOSTIC TROUBLE CODE HINT: The diagnostic system in this vehicle has various functions. The first function is the Diagnostic Trouble Code (DTC) check. A DTC is a code stored in the ECU memory whenever a malfunction in the signal circuits to the ECU occurs. In a DTC check, a previous malfunction's DTC can be checked by a technician during troubleshooting. Another function is the Input Signal Check, which checks if the signals from various switches are sent to the ECU correctly. By using these functions, the problem areas can be narrowed down and troubleshooting can be more effective. Diagnostic functions are incorporated in the following systems of this vehicle. System Symptom Confirmation and Diagnostic Trouble Code DTC Check (Normal Mode) DTC Check (Check Mode) Sensor Check/Test Mode (Input Signal Check) Data List Active Test 2GR-FE SFI System o o - o o Cruise Control System o - - o o Dynamic Radar Cruise Control System o - - o o U660F Automatic Transaxle System o o - o o U660E Automatic Transaxle System o o - o o Active Torque Control 4WD System o - - o o Air Suspension System o - o o o Tire Pressure Warning System o - - o o Vehicle Stability Control System o - o o o Power Steering System o - - o - Power Tilt and Power Telescopic Steering Column System o - - o o Steering Lock System o - - o - Audio and Visual System (w/ Navigation System) o - - - - Audio and Visual System (w/o Navigation System) o - - - - Rear Seat Entertainment System o - - - - Navigation System (for DVD) o - - - - Navigation System (for HDD) o - - - - Intuitive Parking Assist System o - - o o Parking Assist Monitor System o - - o - Side Monitor System (w/ Rear View Monitor System) o - - o - Side Monitor System (w/ Parking Assist Monitor System) o - - o - Rear View Monitor System (w/ Side Monitor System) o - - o - Rear View Monitor System (w/o Side Monitor System) - - - - - Garage Door Opener System - - - - - LIN Communication System o - - o - CAN Communication System o - - - - Power Door Lock Control System o - - o o Wireless Door Lock Control System o - - o o Smart Access System with Push-Button Start (for Entry Function) o - - o o Smart Access System with Push-Button Start (for Start Function) o - - o o Engine Immobilizer System o - - o o Theft Deterrent System - - - o o Remote Engine Starter System - - - - - Lighting System (interior) - - - o o Meter / Gauge System o - - o o Clock System - - - - - Airbag System o o - o - Occupant Classification System o - - o - Pre-Collision System o - - o o Front Power Seat Control System (w/ Memory) o - - o o Front Power Seat Control System (w/o Memory) - - - - - Seat Heater System - - - - - Climate Control Seat System - - - - - Seat Belt Tension Reducer System - - - - - Seat Belt Warning System - - - o o Air Conditioning System o - - o o Accessory Socket System - - - - - Power Window Control System o - - o o Windshield Deicer System - - - - o Window Defogger System - - - - o Sliding Roof System o - - o o Back Door Closer System o - - o o Power Back Door System o - - o o Fuel Lid Opener System - - - - - Power Mirror Control System - - - o o Wiper and Washer System - - - - - Lighting System (exterior) o - - o o Horn System - - - - - Towing Converter System - - - - - In the DTC check, it is very important to determine whether the problem indicated by the DTC either: 1) still occurs, or 2) occurred in the past but has returned to normal. In addition, the DTC should be compared to the problem symptom to see if they are related. For this reason, DTCs should be checked before and after confirmation of symptoms (i.e., whether or not problem symptoms exist) to determine current system conditions, as shown in the flowchart below. Never skip the DTC check. Failing to check for DTCs, depending on the case, may result in unnecessary troubleshooting for systems operating normally or lead to repairs not related to the problem. Follow the procedure listed in the flowchart in the correct order. The following flowchart shows how to proceed with troubleshooting using the DTC check. Directions from the flowchart will indicate how to proceed either to DTC troubleshooting or to the troubleshooting of each problem symptom. DTC CHECK NEXT: Go to next step MAKE A NOTE OF DTC DISPLAYED AND THEN CLEAR MEMORY NEXT: Go to next step SYMPTOM CONFIRMATION Result Result Proceed to No symptoms exist A Symptoms exist B B --> GO TO STEP e . A: Go to next step SIMULATION TEST USING SYMPTOM SIMULATION METHODS NEXT: Go to next step DTC CHECK Result Result Proceed to DTC is not output A DTC is output B B --> TROUBLESHOOTING OF PROBLEM INDICATED BY DTC A: Go to next step SYMPTOM CONFIRMATION Result Result Proceed to No symptoms exist A Symptoms exist B If a DTC was displayed in the initial DTC check, the problem may have occurred in a wire harness or connector in that circuit in the past. Check the wire harness and connectors. B --> END A --> TROUBLESHOOT FOR EACH PROBLEM SYMPTOM The problem still occurs in a place other than the diagnostic circuit (the DTC displayed first is either for a past problem or a secondary problem).
4. SYMPTOM SIMULATION HINT: The most difficult case in troubleshooting is when no problem symptoms occur. In such a case, a thorough problem analysis must be carried out. A simulation of the same or similar conditions and environment in which the problem occurred in the customer's vehicle should be carried out. No matter how much skill or experience a technician has, troubleshooting without confirming the problem symptoms will lead to important repairs being overlooked and mistakes or delays. For example With a problem that only occurs when the engine is cold or as a result of vibration caused by the road during driving, the problem can never be determined if the symptoms are being checked on a stationary vehicle or a vehicle with a warmed-up engine. Vibration, heat or water penetration (moisture) is difficult to reproduce. The following symptom simulation tests are effective substitutes for the conditions and can be applied to a stationary vehicle. Important points in the symptom simulation test: In the symptom simulation test, the problem symptoms as well as the problem area or parts must be confirmed. First, narrow down the possible problem circuits according to the symptoms. Then, connect the tester and carry out the symptom simulation test, judging whether the circuit being tested is defective or normal. Also, confirm the problem symptoms at the same time. Refer to appropriate Problem Symptoms Table for each system to narrow down the possible causes. To reproduce DTCs, it is necessary to satisfy the respective DTC detection conditions. VIBRATION METHOD: When a malfunction seems to occur as a result of vibration. TEXT IN ILLUSTRATION *1 Vibrate Slightly *2 Shake Slightly *3 Vibrate Slightly PART AND SENSOR Apply slight vibration with a finger to the part of the sensor suspected to be the cause of the problem, and check whether the malfunction occurs. NOTE: Applying strong vibration to relays may open the relays. CONNECTORS Slightly shake the connector vertically and horizontally. WIRE HARNESS Slightly shake the wire harness vertically and horizontally. HINT: The connector joint and fulcrum of the vibration are the major areas that should be checked thoroughly. HEAT METHOD: When a malfunction seems to occur when the area in question is heated. Heat the component that is the possible cause of the malfunction with a hair dryer or similar device. Check if the malfunction occurs. NOTE: Do not heat components to more than 60°C (140°F). Exceeding this temperature may damage the components. Do not apply heat directly to parts in an ECU. WATER SPRINKLING METHOD: When a malfunction seems to occur on a rainy day or in high-humidity. Sprinkle water onto the vehicle and check if the malfunction occurs. NOTE: Never sprinkle water directly into the engine compartment. Indirectly change the temperature and humidity by spraying water onto the front of the radiator. Never apply water directly onto the electronic components. HINT: If the vehicle has or had a water leak problem, the leak may have damaged the ECU or connections. Look for evidence of corrosion or short circuits. Proceed with caution during water tests. HIGH ELECTRICAL LOAD METHOD: When a malfunction seems to occur when the electrical load is high. Turn on the heater blower, headlights, rear window defogger and all other electrical loads. Check if the malfunction recurs.
5. DIAGNOSTIC TROUBLE CODE CHART Look for output Diagnostic Trouble Codes (DTCs) (from the DTC checks) in the appropriate service information's Diagnostic Trouble Code Chart. Use the chart to determine the trouble area and the proper inspection procedure. A description of each of the chart's columns is shown in the table below. Item Description DTC No. Indicates the diagnostic trouble code. Detection Item Indicates the system or details of the problem. Trouble Area Indicates the suspected areas of the problem. See Indicates the service information where the inspection procedure for each circuit is to be found, or gives instruction for checking and repairs.
6. PROBLEM SYMPTOMS TABLE When no DTC is output but the problem still occurs, use the Problem Symptoms Table. The suspected areas (circuits or parts) for each problem symptom are shown in the table. The suspected areas are listed in order of probability. A description of each of the table columns is shown in the following table. HINT: In some cases, the problem is not detected by the diagnostic system even though a problem symptom occurs. It is possible that the problem occurs outside the detection range of the diagnostic system, or that the problem occurs in a completely different system. Item Description Symptom - Suspected Area Indicates the circuit or part which needs to be checked. See Indicates the service information where the inspection procedure is located.
7. INSPECTION A description of the main points for inspection of suspected areas is shown in the following table. Item Description Description The major role and operation of the circuit or system and its component parts are explained. DTC No., DTC Detection Condition and Trouble Area Indicates the diagnostic trouble codes, DTC detection conditions and suspected areas for a problem. Wiring Diagram This is a wiring diagram for the circuit or system. This diagram can be used together with the Electrical Wiring Diagram to thoroughly understand the circuit. Wire colors are indicated by alphabetical codes. B = Black, L = Blue, R = Red, BR = Brown, LG = Light Green, V = Violet, G = Green, O = Orange, W = White, GR = Gray, P = Pink, Y = Yellow, SB = Sky Blue The first letter indicates the basic wire color and the second letter indicates the color of the stripe. Inspection Procedure This shows the procedure not only to determine whether the circuit is normal or abnormal, but also to determine whether the problem is located in the sensors, actuators, wire harness or ECU. Illustration of the ECU connector during the check The illustration shows whether the connector being checked is connected or disconnected. The connections for an electrical tester are indicated by (+) or (-) after the terminal name. For inspections between a connector and body ground, information about the ground is not shown in the illustration.

ABBREVIATIONS USED IN SERVICE INFORMATION

See also:
• INSPECTION - Step 2