Electronic Control

ELECTRONIC CONTROL




a. REMOVAL AND INSTALLATION OF BATTERY TERMINAL
1. Before carrying out any work on the vehicle electronics, disconnect the battery negative (-) terminal cable to prevent component and wire damage caused by accidental short circuits.
2. When disconnecting the terminal cable, turn the ignition switch and head light dimmer switch OFF and loosen the terminal nut completely. Perform these operations without twisting or prying the terminal. Remove the battery cable from the battery post.
3. Clock settings, radio settings, DTCs and other data are erased when the battery cable is removed.
Write down any necessary data before disconnecting the battery 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. To disconnect electronic connectors, pull the connector itself, not the wires.
3. Be careful not to 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 emissions-related components from water.
5. Never use an impact wrench to remove or install temperature switches or temperature sensors.
6. When measuring the resistance of a wire connector, insert the tester probe carefully to prevent terminals from bending.