ENGINE (DIAGNOSTICS)(H4DO) > General Description
CAUTION
1. Airbag system wiring harness is routed near the ECM, main relay and fuel pump relay.
CAUTION:
• Do not use electrical test equipment on the airbag system circuits.
• Be careful not to damage the airbag system wiring harness when servicing the ECM, TCM, main relay and fuel pump relay.
2. Never connect the battery in reverse polarity. Doing so will damage the ECM instantly, and other parts will also be damaged.
3. Do not disconnect the battery cables while the engine is running. A large counter electromotive force will be generated in the generator, and this voltage may damage electronic parts such as ECM etc.
4. When disconnecting the connectors of the electrical components, always be sure to turn the ignition switch to OFF. Perform the Clear Memory Mode after connecting the connectors. Clear Memory Mode">
5. When measuring the voltage or resistance of individual sensor or all electrical control modules, use a tapered pin with a diameter of 0.6 mm (0.024 in) or less and touch it to the tip of terminal.
Never insert the tapered pin into the terminal because it deforms inside which may lead to a malfunction.
CAUTION:
When replacing the ECM, be careful not to use the ECM of wrong specification to avoid any damage on the fuel injection system.
NOTE:
When replacing the ECM of the models with immobilizer, immobilizer system must be registered. For detailed operation procedure, refer to the “REGISTRATION MANUAL FOR IMMOBILIZER”.
6. Take care not to allow water to get into the connectors when servicing or washing the vehicle in rainy weather. Avoid exposure to water even if the connectors are waterproof.
7. Use ECM mounting stud bolts for the grounding point when measuring voltage and resistance inside the passenger compartment.
(A) | Stud bolt |
8. Use the engine ground terminal or engine assembly for the grounding point when measuring the voltage and resistance in engine compartment.
9. All parts related to the engine control system are precision parts. Do not drop or otherwise apply impact. Do not reuse the parts that are dropped accidentally.
10. Observe the following cautions when installing a radio in vehicle.
CAUTION:
• The antenna must be kept as far apart as possible from the ECM. Electrical Component Location > LOCATION">
• The antenna feeder must be placed as far apart as possible from the ECM and engine control system harness.
• Carefully adjust the antenna for correct matching.
• When mounting a large power type radio, pay special attention to the three items mentioned above.
• Incorrect installation of the radio may affect the operation of ECM.
11. When disconnecting the fuel hose, release the fuel pressure. Fuel > PROCEDURE">
12. Warning lights may illuminate when performing driving test with jacked-up or lifted-up condition, but this is not a system malfunction. The reason for this is the rotating speed difference between the front and rear wheels. When engine control system diagnosis is finished, perform the VDC memory clearance procedure of self-diagnosis function. Clear Memory Mode">
All-Wheel Drive warning light (CVT models)
This
light blinks if the vehicle is driven with
tires of differing diameters fitted on the
wheels or with an excessively low air
pressure in any of the tires.
WARNING
If the AWD warning light flashes,
promptly park in a safe location then
check whether all four tires are the
same diamete ...
Tire replacement
The wheels and tires are important and
integral parts of your vehicle's design;
they cannot be changed arbitrarily. The
tires fitted as standard equipment are
optimally matched to the characteristics
of the vehicle and were selected to give
the best possible combination of running
performance ...
Dtc b2902 rear height sensor circuit
AUTO HEADLIGHT BEAM LEVELER SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B2902 REAR HEIGHT SENSOR CIRCUITDTC detecting condition:Detected when error occurs in the rear height sensor.Trouble symptom:The auto headlight beam leveler does not operate.CAUTION:Initi ...