Wheel Speed Sensor: Testing and Inspection

SPEED SENSOR SIGNAL CHECK

1. Turn the Ignition Switch OFF.

DLC1 Connector Face View, Showing Terminals For Speed Sensor Signal Check:

2. Using Special Service Tool (SST) # 09843-18020, connect terminals Ts and E1 of DLC1.
3. Start the engine.

ABS Warning Light Blinks:

4. Check that the Anti-Lock Brake System (ABS) Warning Light blinks.

NOTE: If the ABS Warning Light does not blink, inspect the ABS Warning Light circuit.

5. Drive vehicle faster than 45 km/h (28 mph) for several seconds.
6. Stop the vehicle.
7. Using SST, connect terminals Tc and E1 of Data Link Connector (DLC)1.
SST 09843-18020
8 Read the number of blinks of the ABS Warning Light.

NOTE: See the list of Diagnostic Trouble Codes (DTC).
If every sensor is normal, a normal code is output (A cycle of 0.25 sec. ON and 0.25 sec. OFF is repeated).
If 2 or more malfunction are indicated at the same time, the lowest numbered code will be displayed 1st.

Example Of Malfunction Code:

9. After doing the check, disconnect the SST from terminals Ts and E1, Tc and E1 of DLC1, and turn Ignition Switch OFF.
SST 09843-18020

DTC Check Using Hand-Held Tester:

DTC CHECK USING LEXUS HAND-HELD TESTER

1. Do step 1 - 6 on the previous procedure.
2. Hook up the LEXUS hand-held tester to the DLC2.
3. Read the DTC by following the prompts on the tester screen.
Please refer to the LEXUS hand-held tester operator's manual for further details.

DTC Of Speed Sensor Check Function Chart:

DTC OF SPEED SENSOR CHECK FUNCTION