VEHICLE STABILITY CONTROL SYSTEM(for TMMF Made) TEST MODE PROCEDURE

TEST MODE (SIGNAL CHECK) PROCEDURE (for Using Intelligent Tester)

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.

   Tech Tips

   Application of the parking brake is not included in the conditions for the commencement of test mode.

4. Connect the intelligent tester to the DLC3.

5. Turn the ignition switch to ON.

6. Turn the tester on.

7. Switch the skid control ECU to test mode using the intelligent tester.

   Entry the following menu: Chassis / ABS/VSC/TRC / Utility / Signal Check.

8. Check that the ABS warning light and Slip indicator light blinks.

TEST MODE (SIGNAL CHECK) PROCEDURE (for Using SST Check Wire)

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.

   Tech Tips

   Application of the parking brake is not included in the conditions for the commencement of test mode.

4. 

   Text in Illustration

   *a	Front view of DLC3

   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 light and Slip indicator light blinks.

DECELERATION SENSOR CHECK

1. Release the parking brake and drive the vehicle at a speed of 3 km/h (2 mph) or more, and turn the steering wheel either to the left or right 90° or more to turn the vehicle through 180 degrees.

   Tech Tips

   
   

   • The skid control ECU checks whether the lateral acceleration reaches 0.1 G or more while the vehicle is turning. When the lateral acceleration reaches 0.1 G.

   • The table shows the vehicle speeds and turning radius under which the lateral acceleration reaches 0.1 G or more.

     Reference

     Vehicle Speed km/h (mph)	Turning Radius m (ft)
     10 (6)	7.87 (25.82)
     15 (9)	17.72 (58.13)
     20 (12)	31.49 (103.31)
     25 (16)	49.21 (161.45)

   • Do not spin the wheels.

2. Check that the DTC output Click here.

   Tech Tips

   
   

   • If the signal check has been completed normally, the DTC C1279 will be deleted.

   • If the DTC C1279 output, there is a malfunction in the yaw rate sensor, so check for DTCs.

MASTER CYLINDER PRESSURE SENSOR CHECK

1. 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.

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

SPEED SENSOR CHECK

1. Check that the ABS warning light is blinking.

2. 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. Check that the ABS warning light goes off.

      Tech Tips

      
      

      • 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.

      • If the speed sensor check is commenced while the steering wheel is turned, the ABS warning light may come on after the low speed check is finished.

      • The ABS warning light comes on immediately when an abnormality is detected.

      • When the speed sensor signal is normal, the ABS warning light turns off while driving at 45 km/h (28 mph) or more and blinks in the test mode pattern while the vehicle is stationary.

      • Do not drive the vehicle at a speed of 80 km/h (50 mph) or more after the ABS warning light turns off, because test mode DTCs are set again when the vehicle speed exceeds 80 km/h (50 mph).

      • If the vehicle is driven on extremely rough or bumpy roads, sensor signal check may fail and middle speed check DTCs may not be deleted. In such cases, stop the vehicle and drive it again to resume the speed sensor check.

   3. Stop the vehicle.

END OF SENSOR CHECK

1. When the sensor check is successfully completed, the ABS warning light blinks in the test mode pattern when the vehicle is stopped, and goes off when the vehicle is driven.

   Note

   If the sensor check is not completed, the ABS warning light blinks even while the vehicle is driving and the ABS does not operate.

READ SIGNAL CHECK FUNCTION DTCs (for Using Intelligent Tester)

1. Read the DTC(s) by following the instructions on the tester screen.

READ SENSOR SIGNAL CHECK FUNCTION DTCs (for Using SST Check Wire)

1. 

   Text in Illustration

   *a	Front view of DLC3

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

   SST

   09843-18040

2. Turn the ignition switch to ON.

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

   Tech Tips

   
   

   • 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.

   • 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).

   • 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.

   • When multiple codes are stored, they are output in order starting with the lowest DTC number

4. After the check, disconnect the SST from terminals TC and CG of the DLC3.

5. Turn the ignition switch off.

SENSOR SIGNAL CHECK FUNCTION DTCs