PRECAUTION FOR DISCONNECTING THE BATTERY CABLE
Note
When disconnecting the battery negative (-) terminal, initialize the following systems after the terminal is reconnected:
| System | See procedure |
|---|---|
| Parking assist monitor system | |
| Power back door system |
EXPRESSIONS OF IGNITION SWITCH
The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this section.
| Expression | Switch Type | |
|---|---|---|
| Ignition Switch (Position) | Engine Switch (Condition) | |
| Ignition switch off | LOCK | off |
| Ignition switch on (IG) | ON | on (IG) |
| Ignition switch on (ACC) | ACC | on (ACC) |
| Engine start | START | start |
TROUBLESHOOTING PRECAUTIONS
When there is a malfunction with terminal contact points or part installation problems, removal and installation of the suspected parts may return the system to the normal condition either completely or temporarily.
In order to determine the malfunctioning area, be sure to check the conditions at the time the malfunction occurred, such as DTC output and the Freeze Frame Data, and record them before disconnecting each connector or removing and installing parts.
Since the system may be influenced by malfunctions in systems other than the VSC system, be sure to check for DTCs in other systems.
HANDLING PRECAUTIONS
Do not remove or install VSC parts such as the steering angle sensor or yaw rate sensor (acceleration sensor included) except when required, as they cannot be adjusted correctly after removal or installation.
Be sure to perform preparation before work and confirmation after work is completed by following the directions in the repair manual when working on the VSC system.
Be sure to remove and install the ECU, brake actuator and each sensor, etc. with the ignition switch off unless it is specified in the inspection procedure.
If the ECU, brake actuator or a sensor has been removed and installed, it is necessary to check the system for problems after the parts have been reassembled. Check for DTCs using the intelligent tester, and also check that system functions and signals received by the ECU are normal using Test Mode.
DTC PRECAUTION
Warnings for some DTCs will not be cleared by just replacing the defective parts. If a warning is still displayed after completing a repair, turn the ignition switch off before beginning the procedure for clearing DTCs.
Note
If a part is still malfunctioning even after the DTC is cleared, the DTC will be stored again.
CHASSIS DYNAMOMETER PRECAUTION
Enter Test Mode to disable TRC and VSC control when using a chassis dynamometer Click here.
Tech Tips
The vehicle may unexpectedly move off of the dynamometer because of TRC and VSC operation.
Pressing the VSC OFF switch does not disable TRC and VSC operation completely.
Note
Make sure that the VSC OFF indicator light is blinking (Test Mode is activated).
Secure the vehicle with lock chains for safety.
CAN COMMUNICATION SYSTEM PRECAUTIONS
The CAN communication system is used for data communication between the skid control ECU, the steering angle sensor, the yaw rate sensor (acceleration sensor included) and other ECUs. If there are any problems in the CAN communication lines, corresponding DTCs for the communication lines are output.
If any CAN communication line DTCs are output, repair the malfunction in the communication lines and troubleshoot the VSC system after data communication becomes normal.
In order to enable CAN communication, a specific type of wiring is used for the CAN communication lines. The wiring used for each communication line is a twisted pair of wires that have an equal length. A bypass wire should not be used because the data being transmitted will be corrupted.