VEHICLE STABILITY CONTROL SYSTEM > TEST MODE PROCEDURE

for Preparation Click here

1. Release the parking brake.
   

   NOTICE:

   When releasing the parking brake, move the shift lever to P for safety (for automatic transaxle model) or set the chocks to hold the vehicle for safety (for manual transaxle model).

   HINT:

   When the parking brake is applied or the level of the brake fluid is low, the brake warning light will come on.





2. When the ignition switch is turned to ON, check that the ABS warning, brake warning, TR(A)C OFF indicator, VSC OFF indicator and slip indicator lights come on for approximately 3 seconds.
   

   HINT:

   1. If the skid control ECU stores any DTCs, the ABS warning, brake warning and slip indicator lights will come on.
      
   2. If any of the indicators remains on or does not come on, proceed to troubleshooting for the light circuits listed below.
      

   Trouble Area	See Procedure
   ABS warning light circuit (Remains on)	Click here
   ABS warning light circuit (Does not come on)	Click here
   Brake warning light circuit (Remains on)	Click here
   Brake warning light circuit (Does not come on)	Click here
   TR(A)C OFF indicator light circuit (Remains on)	Click here
   TR(A)C OFF indicator light circuit (Does not come on)	Click here
   VSC OFF indicator light circuit (Remains on)	Click here
   VSC OFF indicator light circuit (Does not come on)	Click here
   Slip indicator light circuit (Remains on)	Click here
   Slip indicator light circuit (Does not come on)	Click here

NOTICE:

After replacement of the brake actuator assembly and/or yaw rate and acceleration sensor, perform zero point calibration of the yaw rate and acceleration sensor.

HINT:

1. If the ignition switch is turned from ON to ACC or off during Test Mode (signal check), DTCs recorded during the sensor check will be cleared.
   
2. During Test Mode (signal check), the skid control ECU records all DTCs of the sensor check function. By performing Test Mode (signal check), the codes are cleared if a normal condition is confirmed. The remaining codes are the codes where a malfunction was found.
   

1. Procedure to enter Test Mode.
   
   

   1. Turn the ignition switch off.
      

   2. Check that the steering wheel is centered.
      

   3. Check that the shift lever is in P (for automatic transaxle model) or the parking brake is applied (for manual transaxle model).
      

   4. Connect the Techstream to the DLC3.
      

   5. Turn the ignition switch to ON.
      

   6. Turn the Techstream on.
      

   7. Switch the skid control ECU to Test Mode using the Techstream. Enter the following menus: Chassis / ABS/VSC/TRAC / Utility / Signal Check.
      

   
   
   

   8. Check that the ABS warning and slip indicator lights come on for several seconds and then blink in Test Mode.
      

      HINT:

      If the ABS warning and slip indicator lights do not blink, inspect the TS and CG terminal circuit and ABS warning and slip indicator light circuits.

      Trouble Area	See Procedure
      TS and CG terminal circuit	Click here
      ABS warning light circuit (Remains on)	Click here
      ABS warning light circuit (Does not come on)	Click here
      Slip indicator light circuit (Remains on)	Click here
      Slip indicator light circuit (Does not come on)	Click here

   9. Check the ABS sensors.
      

      HINT:

      Check that the ABS warning light is blinking in the Test Mode blinking pattern before performing the ABS sensor check.

1. Keep the vehicle stationary on a level surface for 1 second or more.
   

   HINT:

   The acceleration sensor check can be performed with the master cylinder pressure sensor check below.

1. Keep the vehicle stationary and release the brake pedal for 1 second or more, and quickly and continuously depress the brake pedal with a force of 98 N (10 kgf, 22 lbf) or more for 1 second.
   

2. Check that the ABS warning light stays on for 3 seconds.
   

   HINT:

   1. Confirm that the ABS warning light comes on.
      
   2. While the ABS warning light is illuminated, continue to depress the brake pedal with a force of 98 N (10 kgf, 22 lbf) or more.
      
   3. The ABS warning light comes on for 3 seconds every time brake pedal operation above is performed.
      
   4. If the master cylinder pressure sensor check is not completed, depressing the brake pedal causes further decreases in the vacuum in the brake booster, making the sensor check difficult to complete.
      
   5. If the vacuum remaining in the booster is insufficient, the master cylinder pressure sensor check may not be completed. In this case, run the engine at idle to obtain sufficient vacuum.
      
   6. If the brake pedal is strongly depressed when the vacuum in the booster is insufficient, the brake warning light may come on in accordance with the booster pressure control. In this case, run the engine at idle to obtain sufficient vacuum.
      

1. Check the speed sensor signal.
   
   

   1. Drive the vehicle straight-ahead.
      Accelerate the vehicle to a speed of 45 km/h (28 mph) or more for several seconds and check that the ABS warning light goes off.
      

      HINT:

      1. The sensor check may not be completed if wheelspin occurs.
         
      2. The ABS warning light blinks when the sensor check has been completed and the brake pedal is depressed.
         
      3. The ABS warning light comes on immediately after a malfunction has been detected during the speed sensor check.
         

2. Stop the vehicle.
   

   NOTICE:

   1. Before performing the speed sensor check, complete the acceleration sensor and master cylinder pressure sensor checks.
      
   2. The speed sensor check may not be completed if the speed sensor check is started while turning the steering wheel or spinning the wheels.
      
   3. After the ABS warning light goes off, if the vehicle speed exceeds 80 km/h (50 mph), a sensor check code will be stored again. Decelerate or stop the vehicle before the speed reaches 80 km/h (50 mph).
      
   4. If the sensor check has not been completed, the ABS warning light will blink while driving and the ABS will not operate.
      

   HINT:

   When the sensor check has been completed, the ABS warning light goes off while driving and blinks in the Test Mode pattern while the vehicle is stationary.

1. 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:

   1. When the acceleration sensor, speed sensor, and master cylinder pressure sensor checks are completed, the sensor check is completed.
      
   2. If the sensor check has not been completed, the ABS warning light will blink while driving and the ABS will not operate.
      

1. Read the DTC(s) by following the Techstream screen.
   

   NOTICE:

   1. If only DTCs other than the Test Mode sensor check DTCs are displayed, repair the malfunction and clear the DTCs.
      
   2. If the Test Mode sensor check DTCs and other DTCs are displayed or if only the Test Mode sensor check DTCs are displayed, repair the malfunction, clear the DTCs, and perform the Test Mode inspection again.
      

   HINT:

   See the list of DTCs (See procedure "A").

2. Turn the ignition switch off and disconnect the Techstream.
   

NOTICE:

After replacement of the brake actuator assembly and/or yaw rate and acceleration sensor, perform zero point calibration of the yaw rate and acceleration sensor.

HINT:

1. If the ignition switch is turned from ON to ACC or off during Test Mode (signal check), DTCs recorded during the sensor check will be cleared.
   
2. During Test Mode (signal check), the skid control ECU records all DTCs of the sensor check function. By performing Test Mode (signal check), the codes are cleared if a normal condition is confirmed. The remaining codes are the codes where a malfunction was found.
   

1. Procedure to enter Test Mode.
   
   

   1. Turn the ignition switch off.
      

   2. Check that the steering wheel is centered.
      

   3. Check that the shift lever is in P (for automatic transaxle model) or the parking brake is applied (for manual transaxle model).
      

   
   
   

   4. Using SST, connect terminals TS and CG of the DLC3.
      

      SST

      09843-18040  
      

   5. Turn the ignition switch to ON.
      

   
   
   

   6. Check that the ABS warning and slip indicator lights come on for several seconds and then blink in Test Mode.
      

      HINT:

      If the ABS warning and slip indicator lights do not blink, inspect the TS and CG terminal circuit and ABS warning and slip indicator light circuits.

      Trouble Area	See Procedure
      TS and CG terminal circuit	Click here
      ABS warning light circuit (Remains on)	Click here
      ABS warning light circuit (Does not come on)	Click here
      Slip indicator light circuit (Remains on)	Click here
      Slip indicator light circuit (Does not come on)	Click here

   7. Check the ABS sensors.
      

      HINT:

      Check that the ABS warning light is blinking in the Test Mode blinking pattern before performing ABS sensor check.

1. Keep the vehicle stationary on a level surface for 1 second or more.
   

   HINT:

   The acceleration sensor check can be performed with the master cylinder pressure sensor check below.

1. Keep the vehicle stationary and release the brake pedal for 1 second or more, and quickly and continuously depress the brake pedal with a force of 98 N (10 kgf, 22 lbf) or more for 1 second.
   

2. Check that the ABS warning light stays on for 3 seconds.
   

   HINT:

   1. Confirm that the ABS warning light comes on.
      
   2. While the ABS warning light is illuminated, continue to depress the brake pedal with a force of 98 N (10 kgf, 22 lbf) or more.
      
   3. The ABS warning light comes on for 3 seconds every time the brake pedal operation above is performed.
      
   4. If the master cylinder pressure sensor check is not completed, depressing the brake pedal causes further decreases in the vacuum in the brake booster, making the sensor check difficult to complete.
      
   5. If the vacuum remaining in the booster is insufficient, the master cylinder pressure sensor check may not be completed. In this case, run the engine at idle to obtain sufficient vacuum.
      
   6. If the brake pedal is strongly depressed when the vacuum in the booster is insufficient, the brake warning light may come on in accordance with the booster pressure control. In this case, run the engine at idle to obtain sufficient vacuum.
      

1. Check the speed sensor signal.
   
   

   1. Drive the vehicle straight-ahead.
      Accelerate the vehicle to a speed of 45 km/h (28 mph) or more for several seconds and check that the ABS warning light goes off.
      

      HINT:

      1. The sensor check may not be completed if wheelspin occurs.
         
      2. The ABS warning light blinks when the sensor check has been completed and the brake pedal is depressed.
         
      3. The ABS warning light comes on immediately after a malfunction has been detected during the speed sensor check.
         

2. Stop the vehicle.
   

   NOTICE:

   1. Before performing the speed sensor check, complete the acceleration sensor and master cylinder pressure sensor checks.
      
   2. The speed sensor check may not be completed if the speed sensor check is started while turning the steering wheel or spinning the wheels.
      
   3. After the ABS warning light goes off, if the vehicle speed exceeds 80 km/h (50 mph), a sensor check code will be stored again. Decelerate or stop the vehicle before the speed reaches 80 km/h (50 mph).
      
   4. If the sensor check has not been completed, the ABS warning light will blink while driving and the ABS will not operate.
      

   HINT:

   When the sensor check has been completed, the ABS warning light goes off while driving and blinks in the Test Mode pattern while the vehicle is stationary.

1. 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:

   1. When the acceleration sensor, speed sensor, and master cylinder pressure sensor checks are completed, the sensor check is completed.
      
   2. If the sensor check is not completed, the ABS warning light blinks even while the vehicle is driving and the ABS will not operate.
      

1. Using SST, connect terminals TC and CG of the DLC3.
   

   SST

   09843-18040  
   





2. Count the number of blinks of the ABS warning and slip indicator lights.
   

   
   
   
   

   NOTICE:

   1. If only DTCs other than the Test Mode sensor check DTCs are displayed, repair the malfunction and clear the DTCs.
      
   2. If the Test Mode sensor check DTCs and other DTCs are displayed or if only the Test Mode sensor check DTCs are displayed, repair the malfunction, clear the DTCs, and perform the Test Mode inspection again.
      

   HINT:

   1. If more than 1 malfunction is detected at the same time, the lowest numbered code will be displayed first.
      
   2. See the list of DTCs (See procedure "A").
      

3. After performing the check, disconnect SST from terminals TS and CG, and TC and CG of the DLC3 and turn the ignition switch off.
   

4. Turn the ignition switch to ON.
   

   HINT:

   1. If the ignition switch is not turned to ON after SST is removed from the DLC3, the previous Test Mode will continue.
      
   2. If the ignition switch is turned to ON with terminals TS and CG connected, the previous Test Mode will continue.
      

HINT:

The codes in this table are output only in Test Mode (signal check).

1. Press the VSC OFF switch.
   

2. Check that the TR(A)C OFF indicator light goes off.
   

3. Press the VSC OFF switch again.