Part 3
INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION
3. ELECTRONIC CONTROL
NOTICE:
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.
(a) REMOVAL AND INSTALLATION OF 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.
(2) When disconnecting the cable, turn the engine 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.
(b) 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.
(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.
4. REMOVAL AND INSTALLATION OF FUEL CONTROL PARTS
(a) 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.
(b) 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.
5. REMOVAL AND INSTALLATION OF ENGINE INTAKE PARTS
(a) If any metal particles enter inlet system parts, this may damage the engine.
(b) When removing and installing inlet system parts, cover the openings of the removed parts and engine openings. Use gummed tape or other suitable materials.
(c) When installing inlet system parts, check that no metal particles have entered the engine or the installed parts.
6. HANDLING OF HOSE CLAMPS
(a) Before removing the hose, check the clamp position so that it can be reinstalled in the same position.
(b) Replace any deformed or dented clamps with new ones.
(c) When reusing a hose, attach the clamp on the clamp track portion of the hose.
(d) 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.
7. FOR VEHICLES EQUIPPED WITH MOBILE COMMUNICATION SYSTEMS
(a) Install the antenna far away from the ECU and sensors of the vehicle electronic systems as possible.
(b) 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 section on the applicable components.
(c) 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.
(d) Check that the antenna and feeder are correctly adjusted.
(e) Do not install any high-powered mobile communication system.
8. HEADLIGHT INSPECTION MAINTENANCE
(a) When the headlight dimmer switch assembly is set to HEAD, do not touch the discharge headlight's high-voltage socket area.
NOTICE:
When performing inspection maintenance, the discharge headlight's precautions must be followed.
(b) When the headlights are illuminated, do not cover the headlights for 3 minutes or more.
NOTICE:
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 TR(A)C (TRACTION CONTROL) SYSTEM AND VSC (VEHICLE STABILITY CONTROL) SYSTEM
(a) NOTICES FOR WHEN TESTING WITH 2-WHEEL DRUM TESTER
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 wheels and turning the wheels, perform the following procedure to enter inspection mode and disable the TR(A)C and VSC systems.
HINT
* The vehicle may slip unexpectedly out of the dynamometer because of TR(A)C and VSC operations.
* Pressing the VSC OFF switch does not disable TR(A)C and VSC operation completely.
NOTICE:
* Make sure that the VSC OFF indicator light will come on and the TR(A)C OFF message will be displayed on the multi-information display.
* Secure the vehicle with chains for safety.
(1) Activating inspection mode
HINT
Perform steps "C" to "G" within 30 seconds.
1 Ensure that the engine switch is off and the engine is stopped. (Step "A")
2 Make sure that the shift lever is in P. (Step "B")
3 Start the engine. (Step "C")
4 Apply the parking brake by pulling the parking brake lever or pedal. (Step "D")
5 Depress and release the brake pedal twice. (Step "E")
6 While holding the brake pedal down, release and apply the parking brake twice. (Step "F")
7 With the parking brake applied, depress and release the brake pedal twice. (Step "G")
8 Check if the VSC OFF indicator light will come on and the TR(A)C OFF message will be displayed on the multi-information display. (Step "H")
HINT
* If the VSC OFF indicator light does not come on and/or TR(A)C OFF message is not displayed on the multi-information display in step "H", repeat the steps from "A" to "H".
* Turning the engine switch off ends inspection mode.
(b) NOTICES FOR VSC RELATED PROCEDURES
(1) For VSC related parts, adjustments are required after removal and installation. Therefore, perform removal and installation only when necessary.
(2) When performing VSC related procedures, be sure to strictly follow the preparation and completion procedures.
(3) When performing removal and installation or replacement of VSC related parts, first disconnect the cable from the negative (-) battery terminal.