Test Mode Procedure
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (for Vacuum Brake Booster): TEST MODE PROCEDURE
NOTICE:
After replacement of the brake actuator assembly and/or yaw rate and deceleration sensor, perform zero point calibration of the yaw rate and deceleration sensor.
HINT
* If the ignition switch is turned from ON to ACC or OFF during Test Mode (signal check), DTCs recorded during the signal check function will be erased.
* During Test Mode (signal check), the skid control ECU records all DTCs of the signal check function. By performing the Test Mode (signal check), the codes are erased if a normal condition is confirmed. The remaining codes are the codes where an abnormality was found.
1. TEST MODE (SIGNAL CHECK) PROCEDURE (WHEN USING TECHSTREAM)
(a) Place the vehicle on a level surface with an inclination of less than +/-1°.
(b) Turn the ignition switch off.
(c) Check that the steering wheel is in the centered position.
(d) Check that the shift lever is in the P position (for automatic transmission model) or the parking brake is applied (for manual transmission model).
CAUTION:
Application of the parking brake is not necessary for entering test mode. However, apply the parking brake for safety.
(e) Connect the Techstream to the DLC3.
(f) Turn the ignition switch to ON.
(g) Turn the Techstream ON.
(h) Switch the skid control ECU to test mode using the Techstream.
Enter the following menus: Chassis / ABS/VSC/TRAC / Utility / Signal Check.
(i) Check that the ABS warning light and VSC OFF indicator light blink as shown in the illustration.
(j) Start the engine.
2. TEST MODE (SIGNAL CHECK) PROCEDURE (WHEN USING SST CHECK WIRE)
(a) Place the vehicle on a level surface with an inclination of less than +/-1°.
(b) Turn the ignition switch off.
(c) Check that the steering wheel is in the centered position.
(d) Check that the shift lever is in the P position (for automatic transmission model) or the parking brake is applied (for manual transmission model).
CAUTION:
Application of the parking brake is not necessary for entering test mode. However, apply the parking brake for safety.
(e) Using SST, connect terminals 12 (TS) and 4 (CG) of the DLC3.
SST : 09843-18040
(f) Turn the ignition switch to ON.
(g) Check that the ABS warning light and VSC OFF indicator light blink as shown in the illustration.
(h) Start the engine.
3. DECELERATION SENSOR CHECK
(a) Keep the vehicle stationary on a level surface for 1 second or more.
HINT
Deceleration sensor check can be performed with the master cylinder pressure sensor check below.
4. MASTER CYLINDER PRESSURE SENSOR CHECK
(a) Leave the vehicle in a stationary condition and release the brake pedal 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.
(b) Check that the ABS warning light stays on for 3 seconds.
HINT
Ensure that the ABS warning light comes on.
5. 4WD DETECTION SWITCH SIGNAL CHECK (only 4WD vehicle)
(a) Check that the ABS warning light is blinking as shown in the illustration.
(b) Check the transfer indicator switch (4WD position).
(1) Push and turn the 4 wheel drive control switch to put the vehicle in 4WD mode.
(2) Push and turn the 4 wheel drive control switch to put the vehicle in 2WD mode.
6. VSC OFF SWITCH CHECK
(a) Press the VSC OFF switch.
(b) Check that the AUTO LSD indicator light comes on.
(c) Press the VSC OFF switch again to turn the AUTO LSD indicator off.
7. YAW RATE AND DECELERATION SENSOR CHECK
(a) Keep the vehicle in a stationary condition on a level surface for 1 second or more.
(b) Move the shift lever from P to the D position (for automatic transmission model) or release the parking brake (for manual transmission model) and drive the vehicle at a speed of approximately 5 km/h (3 mph), and turn the steering wheel either to the left or right 90° or more until the vehicle makes a 180° turn.
(c) Stop the vehicle and move the shift lever to the P position (for automatic transaxle model) or apply the parking brake (for manual transaxle model). 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 Skid Control Buzzer Circuit, and then perform the sensor check again.
* If the skid control buzzer still does not sound, there is a malfunction in the yaw rate and deceleration sensor, so check the DTC.
* Make a 180° turn. 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.
* Do not turn the ignition switch off while turning.
* Do not move the shift lever to the P position (for automatic transaxle model) or do not apply the parking brake (for manual transaxle model) while turning, but changing the vehicle speed, stopping, or driving in reverse is possible.
* Complete the turn within 20 seconds.
8. SPEED SENSOR CHECK
(a) Check the speed sensor signal.
(1) Drive the vehicle straight forward at a speed of 45 km/h (28 mph) or more for several seconds.
(2) Drive the vehicle in reverse for more than 1 second at 3 km/h (2 mph) or more.
HINT
Drive the vehicle in reverse and check the speed sensor signal. Note that the signal check cannot be completed if the vehicle speed is 45 km/h (28 mph) or more.
(3) Check that the ABS warning light goes off.
HINT
* The sensor check may not be completed if wheelspin occurs.
* The ABS warning light blinks when the sensor check has been completed and the brake pedal is depressed.
* The ABS warning light comes on immediately after a malfunction has been detected during the speed sensor check.
(4) Stop the vehicle.
9. END OF SENSOR CHECK
(a) If the sensor check is completed, the ABS warning light blinks (Test Mode) when the vehicle stops and the ABS warning light is off while the vehicle is driving.
NOTICE:
* When the yaw rate and deceleration sensor, speed sensor, and master cylinder pressure sensor checks are completed, the sensor check is completed.
* If the sensor check is not completed, the ABS warning light blinks even while the vehicle is driving and the ABS does not operate.
10. READ SIGNAL CHECK FUNCTION DTCs (WHEN USING TECHSTREAM)
(a) Read the DTC(s) by following the instructions on the Techstream screen.
NOTICE:
* If only the DTCs are displayed, repair the malfunction area and clear the DTCs.
* If the DTCs and Test Mode codes (DTC of signal check function) are displayed, repair the malfunction area, clear the DTCs and perform Test Mode inspection.
11. READ SENSOR SIGNAL CHECK FUNCTION DTCs (WHEN USING SST CHECK WIRE)
(a) Using SST, connect terminals TC and CG of the DLC3.
SST : 09843-18040
(b) Turn the ignition switch to ON.
(c) Count the number of blinks of the ABS warning and SLIP indicator.
NOTICE:
* If only the DTCs are displayed, repair the malfunction area and clear the DTCs.
* If the DTCs or Test Mode codes (DTC of signal check function) are displayed, repair the malfunction area, clear the DTCs and perform Test Mode inspection.
HINT
If more than 1 malfunction is detected at the same time, the lowest numbered code will be displayed first.
(d) After performing the check, disconnect SST from terminals TC and CG of the DLC3 and turn the ignition switch off.
(e) Turn the ignition switch to ON.
HINT
* If the ignition switch is not turned to ON after SST is removed from the DLC3, the previous Test Mode will continue.
* If the ignition switch is turned to ON with terminals TS and CG shorted, the previous Test Mode will continue.
12. DTC OF TEST MODE (SIGNAL CHECK) FUNCTION
ABS Sensor
*: for 4WD
VSC Sensor
HINT
The codes in this table are output only in Test Mode (signal check).