Without Scan Tool

ABS SENSOR SIGNAL CHECK (TEST MODE)

When not using hand-held tester:

NOTE: When having replaced the yaw rate sensor, deceleration sensor and/or ECU, perform zero point calibration of the yaw rate and deceleration sensors (see step 9).

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

a. Procedures for test mode:
1. Turn the ignition switch OFF.
2. Move the shift lever to the P position.




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

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4. Check that the steering wheel is in the straight-ahead position.
5. Turn the ignition switch ON.
6. Check that the ABS warning light blinks.

HINT: If the ABS warning light does not blink, inspect the ABS warning light circuit or TS terminal circuit.

Trouble Area
TS terminal circuit
ABS warning light circuit

b. Check the brake pedal load sensing switch.
1. By pumping the brake pedal, release the booster vacuum.
2. Turn the ignition switch to ON (do not start the engine) and keep depressing the brake pedal for 1 second or more with a force of approximately 59 N (6 kgf, 14 lbf) or more.
3. Check that the brake warning light is illuminated and the operating sound of the ABS motor is heard.
4. Start the engine and depress the brake pedal with a force of approximately 59 N (6 kgf, 14 lbf) or more.
5. Check that the brake warning light turns off.

HINT: When rechecking, exit test mode and then activate test mode again.

c. Check the deceleration sensor.
Keep the vehicle in a stationary condition on a level place for 1 second or more.

d. Check the master cylinder pressure sensor.
1. Leaving the vehicle in a stationary condition and the brake pedal in free condition for 1 second or more, continue to depress the brake pedal with a force of 98 (10 kgf, 22 lbf) or more for 1 second or more.
2. While the vehicle is stopped, release the brake pedal.
3. While the vehicle is stopped, quickly depress the brake pedal once or more and check that the ABS warning light is illuminated for 3 seconds.

HINT: Repeat the operation until the ABS warning light is illuminated.

e. Check the speed sensor signal.
Drive the vehicle straightforward.
Drive the vehicle with the speed faster than 45 km/h (28 mph) for several seconds and check that the ABS warning light turns off.

HINT: The sensor check may not be completed if the wheels spin or the steering wheel is steered during this check.

f. Stop the vehicle.




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

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

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

i. After doing the check, disconnect the SST from terminals TS and CG, TC and CG of the DLC3 and turn the ignition switch OFF.

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