Without Scan Tool

SENSOR SIGNAL CHECK (TEST MODE) (USING SST CHECK WIRE)

NOTE: After replacing the yaw rate sensor and/or brake actuator assembly (skid control ECU), perform zero point calibration of the yaw rate sensor.

HINT: If the ignition switch is turned from ON to ACC or LOCK during test mode, the DTCs will be erased.




a. Procedures for the test mode:
1. Turn the ignition switch OFF.
2. Using SST, it connects terminal Ts and CG of DLC3.

SST 09843-18040

3. Check that the steering wheel is in the straight-ahead position and shift the shift lever to P range.
4. Turn the ignition switch to the ON position.




5. Check that the ABS warning light and VSC warning light blink.

HINT: If the ABS warning light does not blink, inspect the ABS warning light circuit or Ts terminal circuit.

Trouble area
ABS warning light circuit
VSC warning light circuit
TS terminal circuit

b. Check the master cylinder pressure sensor.
1. Leaving the vehicle in a stationary condition and the brake pedal in free condition for 1 sec. or more, continue to quickly depress the brake pedal with a force of 98 N (10 kgf, 22 lbf) or more for 1 sec. or more.

HINT: At this time, the ABS warning light goes on for 3 sec.

c. Check the speed sensor signal.
1. Drive the vehicle straight forward at the speed of 28 mph (45 km/h) or over for several seconds and check that the ABS warning light comes off.

HINT: The sensor check may not be completed if the wheels spin or the steering wheels are steered during this check.

2. Stop the vehicle.




3. Using SST, it connects terminal Tc and CG of DLC3.

SST 09843-18040

4. Read the number of blinks of the ABS warning light.

HINT:
- See the list of DTC.
- If every sensors are normal, the normal code is output (A cycle of 0.25 sec. ON and 0.25 sec. OFF is repeated).
- If more than 1 malfunctions are detected at the same time, the lowest numbered code will be displayed first.




5. After the check, disconnect the SST from terminal Tc and CG of the DLC3.




d. Check the yaw rate sensor.
1. Shift the shift lever to the D range and drive the vehicle at the vehicle speed of approx. 3 mph (5 km/h), turn the steering wheel either to left or right 90° or more, and maintain 180° circular drive for the vehicle.
2. Stop the vehicle and shift the shift lever to the P position, check that the skid control buzzer sounds for 3 sec.

HINT:
- If the skid control buzzer sounds, the sensor check is completed normally.
- If the skid control buzzer does not sound, check the skid control buzzer circuit , then perform the sensor check again.
- If the skid control buzzer still won't sound, there is a malfunction in the VSC sensor, so check the DTC.
- Drive the vehicle in a 180° circle. At the end of the turn, the direction of the vehicle should be within 180° ± 5° of its start position.
- Do not spin the wheels.

3. Using SST, connect terminals Tc and CG of DLC3.

SST 09843-18040

4. Read the number of blinks of the VSC warning light.

HINT:
- See the list of DTC.
- If every sensor is normal, there is a normal code output. (A cycle of 0.25 sec. ON and 0.25 sec. OFF is repeated.)
- If 2 or more malfunctions are indicated at the same time, the lowest numbered code will be displayed 1st.




5. After performing the check, disconnect the SST from terminals Ts and CG, Tc and CG of DLC3 and turn the ignition switch OFF.