With Manufacturer's Scan Tool

SENSOR SIGNAL CHECK (TEST MODE) (USING HAND-HELD TESTER)

NOTE: After replacing the yaw rate sensor (deceleration sensor) and/or brake actuator assembly (skid control ECU), perform zero point calibration of the yaw rate sensor and deceleration sensor. (See step 10.)

HINT:
- If the ignition switch is turned from ON to the ACC or LOCK position during test mode, DTC of sensor check function will be erased.
- During test mode, ECU records all DTC of sensor check function. By performing sensor signal check, the codes are erased if normality is confirmed. The codes left over are the codes where an abnormality was found.

a. Procedures for test mode:
1. Turn the ignition switch off.
2. Check that the shift lever position is in the P position.
3. Connect the hand-held tester to the DLC3.
4. Put the hand-held tester in test mode.




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

HINT: If the ABS warning light and VSC warning light do not blink, inspect the ABS warning light circuit and VSC warning light circuit.

Trouble area
ABS warning light circuit
VSC warning light circuit

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

HINT: At this time, the ABS warning light remains on for 3 seconds.

c. Check the yaw rate sensor:




1. Shift the shift lever to the D position and drive the vehicle at a speed of approx. 3 mph (5 km/h), and maintain a 180 degree circular drive for the vehicle.
2. Stop the vehicle and shift the shift lever to the P position, then check that the skid control buzzer sounds for 3 seconds.

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 does not sound, there is a malfunction in the VSC sensor, so check for DTC.
- Drive the vehicle in a 180 degree circle. At the end of the turn, ensure that the vehicle is exactly 180 degree within a tolerance of ± 5 degree, and facing the other direction from its original start position.
- Do not spin the wheels.

d. Check the speed sensor:
1. Drive the vehicle straight forward at the speed of 28 mph (45 km/h) or higher for several seconds and check that the ABS warning light goes off.

HINT: The sensor check may not be completed if the vehicle has its wheels spun or its steering wheel turned during this check.

2. Stop the vehicle.

e. Read the DTC following the tester screen.

HINT: Refer to the hand-held tester operator's manual for further details.