Release the parking brake.

NOTICE:

Before releasing the parking brake, move the shift lever to P or set chocks to prevent the vehicle from rolling.

HINT:

When the parking brake is applied or the brake fluid level is low, the brake warning light comes on.

When the ignition switch is turned to ON, check that the ABS warning, brake warning, VSC OFF indicator and TRAC OFF indicator, Slip indicator lights come on for approximately 3 seconds.

HINT:

1. If the skid control ECU (brake actuator assembly) stores any DTCs, the ABS warning and Slip indicator lights will come on.
   
2. If any of the indicators remain on or do not come on, proceed to troubleshooting for the light circuits listed below.
   

Procedure to enter Test Mode.

1. Turn the ignition switch off.
   

2. Check that the steering wheel is in the straight-ahead position.
   

3. Check that the shift lever is in neutral and apply the parking brake.
   

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 (brake actuator assembly) 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 the Test Mode blinking pattern.
   

   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

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

HINT:

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

Leave the vehicle in a stationary condition 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.

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

HINT:

1. Ensure that the ABS warning light comes on.
   
2. While the ABS warning light stays on, 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 vacuum in the brake booster, making the sensor check difficult to complete.
   
5. If the vacuum 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 is insufficient, the brake warning light may come on in accordance with booster pressure control. In this case, run the engine at idle to obtain sufficient vacuum.
   

Check the speed sensor signal.

NOTICE:

Before performing the speed sensor signal check, complete the deceleration sensor and master cylinder pressure sensor checks.

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.
   

   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.
      

Stop the vehicle.

NOTICE:

1. The speed sensor check may not be completed if the sensor check is started with the steering wheel turned or one or more wheels spinning.
   
2. After the ABS warning light goes off and 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).
   
3. If the sensor check has not been completed, the ABS warning light blinks during driving and the ABS system does not operate.
   

HINT:

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

Briefly press the VSC OFF switch.

Check that the VSC OFF indicator light on.

Briefly press the VSC OFF switch again to turn the VSC OFF indicator light off.

If the sensor check is completed, the ABS warning light blinks and Slip indicator blinks (Test Mode) when the vehicle stops and the ABS warning light is off while the vehicle is being driven.

NOTICE:

1. When the yaw rate sensor, deceleration 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 being driven and the ABS does not operate.
   

Read the DTC(s) by following the tester screen.

NOTICE:

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

List of DTCs.

HINT:

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

Turn the ignition switch off and disconnect the Techstream.

Procedure to enter Test Mode.

1. Turn the ignition switch off.
   

2. Check that the steering wheel is in the straight-ahead position.
   

3. Check that the shift lever is in neutral and apply the parking brake.
   





4. Using SST, connect terminals 12 (TS) and 4 (CG) of the DLC3.
   

   Text in Illustration 

   *a	Front view of 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 VSC OFF 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

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

HINT:

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

Leave the vehicle in a stationary condition 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.

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

HINT:

1. Ensure that the ABS warning light comes on.
   
2. While the ABS warning light stays on, 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 vacuum in the brake booster, making the sensor check difficult to complete.
   
5. If the vacuum 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 is insufficient, the brake warning light may come on in accordance with booster pressure control. In this case, run the engine at idle to obtain sufficient vacuum.
   

Check the speed sensor signal.

NOTICE:

Before performing the speed sensor signal check, complete the deceleration sensor and master cylinder pressure sensor signal checks.

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.
   

   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.
      

Stop the vehicle.

NOTICE:

1. The speed sensor check may not be completed if the sensor check is started with the steering wheel turned or one or more wheels spinning.
   
2. After the ABS warning light goes off and 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).
   
3. If the sensor check has not been completed, the ABS warning light blinks during driving and the ABS system does not operate.
   

HINT:

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

Briefly press the VSC OFF switch.

Check that the VSC OFF indicator light on.

Briefly press the VSC OFF switch again to turn the VSC OFF indicator light off.

If the sensor check is completed, the ABS warning light blinks and Slip indicator blinks (Test Mode) when the vehicle stops and the ABS warning light is off while the vehicle is being driven.

NOTICE:

1. When the yaw rate sensor, deceleration 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 will blink even while the vehicle is driven and the ABS will not operate.
   

Using SST, connect terminals 12 (TS), 13 (TC) and 4 (CG) of the DLC3.

SST

09843-18040  

Count the number of blinks of the ABS warning and VSC OFF indicator lights.

NOTICE:

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

HINT:

1. When the system is operating correctly, each light will blink continuously in a pattern of 0.25 seconds on, and then 0.25 seconds off.
   
2. When one DTC is output, each light will output the same code at 4 second intervals (for example, code 21 would be output as 2 flashes, a 1.5 second pause, and then 1 flash).
   
3. When 2 or more DTCs are output, each light will output a different code at 2.5 second intervals, and when all codes have been output, there will be a 4 second pause and the sequence will repeat.
   
4. When multiple codes are stored, they are output in order starting with the lowest DTC number
   

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

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 shorted, the previous Test Mode will continue.