ANTI-LOCK BRAKE SYSTEM TEST MODE PROCEDURE

TEST MODE (SIGNAL CHECK) PROCEDURE

1. Place the vehicle on a level surface with an inclination of less than 1%.

2. Turn the ignition switch off.

3. Check that the shift lever is in P.

   CAUTION:

   Apply the parking brake for safety.

4. Connect the GTS to the DLC3.

5. Turn the ignition switch to ON.

6. Turn the GTS on.

7. Enter the following menus: Chassis / ABS/VSC/TRC / Utility / Signal Check.

8. Check that the ABS warning light blinks at 0.125 second intervals (0.125 seconds on and 0.125 seconds off).

9. Start the engine.

10. ABS Signal Check

    Tech Tips

    Check that the ABS warning light is blinking in the test mode blinking pattern (0.125 seconds on and 0.125 seconds off) before performing the ABS signal check.

11. Master Cylinder Pressure Sensor and Deceleration Sensor Check

    
    

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

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

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

       Tech Tips

       During test mode, the ABS warning light turns on for 3 seconds every time the above operation is performed.

12. Center Differential Lock Detection Switch (Transfer Shift Actuator Assembly) Check

    
    

    1. Press the center differential lock detection switch (transfer shift actuator assembly) to lock the center differential.

       Tech Tips

       Move the vehicle either forward or backward a little to engage the center differential lock.

    2. Press the center differential lock switch (transfer shift actuator assembly) to unlock the center differential.

13. Speed Sensor Check

    Note

    
    

    • Before performing the speed sensor signal check, complete the master cylinder pressure sensor check.

    • The signal check may not be completed if the wheels of the vehicle spin or the steering wheel is turned during this check.

    
    

    1. Drive the vehicle straight forward at a speed of 45 km/h (28 mph) or more for several seconds (forward signal check).

    2. Check that the ABS warning light goes off.

    3. Drive the vehicle in reverse for more than 1 second at 3 km/h (2 mph) or more (reverse signal check).

    4. Check that the ABS warning light goes off.

       Tech Tips

       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.

       Note

       
       

       • The sensor check may not be completed if wheelspin occurs.

       • The ABS warning light blinks when the sensor check is 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.

    5. Stop the vehicle.

       Note

       
       

       • The speed sensor signal check may not be completed if the speed sensor signal check is started while turning the steering wheel or spinning the wheels.

       • If the signal check is not completed, the ABS warning light blinks while driving and the ABS does not operate.

       Tech Tips

       When the signal check is completed, the ABS warning light goes off while driving and blinks in the test mode pattern while stationary.

14. End of Signal Check

    
    

    1. If the signal check is completed, the ABS warning light blinks (0.125 seconds on and 0.125 seconds off) when the vehicle is stopped and goes off while driving the vehicle.

       Note

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

15. Read test mode (signal check) DTCs.

    
    

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

       Note

       
       

       • If only DTCs other than test mode signal check DTCs are output, repair the malfunctions and clear the DTCs.

       • If test mode signal check DTCs and other DTCs are output or if only test mode sensor check DTCs are output, repair the malfunctions, clear the DTCs, and perform the test mode inspection again.

       Tech Tips

       Refer to Signal Check DTCs.

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

LIST OF TEST MODE (SIGNAL CHECK) DTC