TCS Sequence Control

1. Under the Traction Control System (TCS) sequence control, after the hydraulic unit solenoid valve is driven, the operation of the hydraulic unit can be checked by means of the brake tester or pressure gauge.
2. TCS sequence control can be started by diagnosis connector or scan tool.

OPERATIONAL GUIDELINES OF THE TCS SEQUENCE CONTROL WITH DIAGNOSIS CONNECTOR





1. Connect diagnosis terminals to terminals No. 4 of the diagnosis connector beside driver's seat heater unit.
2. Set the speed of all wheels at 10 km/h (6 MPH) or less.
3. Turn ignition switch OFF.
4. Within 0.5 seconds after the ABS and TCS warning light goes out, press TCS OFF switch. Within 1.0 second thereafter, release and press the switch again. Then, keep the switch pressed.

NOTE:
^ When the TCS sequence control is set to on, the brake pedal must not be depressed.
^ Engine must operate.
^ When TCS OFF switch is not depressed within 0.5 seconds after ABS and TCS warning lights go out, the trouble code mode comes on.

5. After completion of TCS sequence control, turn ignition switch OFF.

OPERATIONAL GUIDELINES OF THE TCS SEQUENCE CONTROL WITH SCAN TOOL
1. Connect scan tool to data link connector beside driver's seat heater unit.
2. Start engine.
3. Put scan tool to TCS mode.





4. Press F D 2 ENT key.





5. When the message shown in the figure is displayed, press ENT key.
6. Check points will be displayed on scan tool.





7. When TCS sequence control cannot be started (by system malfunction, etc.), the message shown in the figure will be displayed.

NOTE: Read the trouble codes. Repair faulty parts.

CONDITIONS FOR COMPLETION OF TCS SEQUENCE CONTROL
When the following conditions develop, the ABS sequence control stops and ABS and TCS warning lights come on while the ABS and TCS function will then stop. The brake system functions as a conventional brake system.
1. When the speed of at least one wheel reaches 10 km/h (6 MPH).
2. When terminal No. 4 is separated from ground. (When scan tool is not used.)
3. When the brake pedal is depressed during sequence control and the braking lamp switch is set to ON.
4. When TCS OFF switch is released. (When scan tool is not used.)
5. After completion of the TCS sequence control.
6. When output signal to break TCS control is emitted from ECM.
7. When malfunction is detected.

NOTE: When malfunction has been detected and the ABS sequence control operation has stopped, the trouble codes are stored in memory.

CONDITIONS FOR TCS SEQUENCE CONTROL





NOTE:
^ When scan tool is used, control operation starts at point A. It is not required to operate TCS OFF switch for starting sequence control operation. The patterns from ignition key ON to the point A show that operation is started by diagnosis connector.