Sensor Signal Check (Test Mode)

SENSOR SIGNAL CHECK






HINT: If the ignition switch is turned from ON to ACC or LOCK during test mode, DTC will be erased.

a. In case of not using LEXUS hand-held tester:
Check the sensor signal.
1. Turn the ignition switch OFF.
2. Using SST, connect terminals Ts and E1 of the DLC1 or terminals Ts and CC of the DLC3.
SST 09843-18020 or 09843-18040
3. Start the engine.




4. Check that the ABS warning light blinks.

HINT: If the ABS warning light does not blink, inspect the ABS warning light circuit and Ts terminal circuit.

5. Keep the vehicle in the stationary condition on the flat place for 1 sec. or more.
6. Keeping the vehicle in the stationary condition and the brake pedal in free condition for 1 Sec. or more, continue to depress the brake pedal with 147 N (15 kgf, 33 lbf) or more for 1 sec. or more.
7. Keeping the vehicle in the stationary condition, depress the brake pedal with 98 N (10 kgf, 22 lbf) or more quickly.

HINT: The above mentioned condition comes into existence, the ABS warning light comes ON for 3 seconds.

8. Drive the vehicle straight forward.
When driving the vehicle at the speed faster than 45 km/h (28 mph) for several seconds, check that the ABS warning light comes off.

HINT: There is a case that the sensor check is not completed if the vehicle has its rear wheels spun or its steering wheel steered during this check.

9. Stop the vehicle.
10. Using SST, connect terminals Tc and E1 of the DLC1 or terminals Tc and CG of the DLC3.
SST 09843-18020 or 09843-18040
11. Read the number of blinks of the ABS warning light.






HINT:
- See the DTC list shown.
- If every sensor is normal, a normal code is output (A cycle of 0.25 seconds ON and 0.25 seconds OFF is repeated).
- If 2 or more malfunctions are indicated simultaneously, the lowest numbered code will be displayed first.

12. After doing the check, disconnect the SST from terminals Ts and E1, Tc and E1 of the DLC1 or terminals Ts and CG, Tc and CG of the DLC3, and turn the ignition switch OFF.
SST 09843-18020 or 09843-18040




b. In case of using LEXUS hand-held tester:
Check the sensor signal.
1. Connect the LEXUS hand-held tester to the DLC3.
2. Do step (3) to (9).
3. Read the DTC by following the prompts on the tester screen.

HINT: Please refer to the LEXUS hand-held tester operator's manual for further details.

C1271/71 - C1281/81:

DTC of sensor check function: