Acceleration/Deceleration Sensor: Service Precautions

SPEED SENSOR AND DECELERATION SENSOR DIAGNOSIS SYSTEM


Precaution:
While checking the speed sensor diagnosis system, the ABS does not operate and the brake system operates as a normal brake system.


1. INSPECT BATTERY POSITIVE VOLTAGE
- Inspect that the battery positive voltage is 10-14 V.






2. Check that the warning light turns "ON".
(a) Turn the ignition switch "ON".
(b) Check "ABS" warning light turns of for 3 seconds. If not inspect and repair or replace the fuse, bulb and wire harness.
(c) Check the "ABS" warning light turns "OFF".
(d) Turn the ignition switch "OFF".






3. Do the following steps.
(a) Using SST, connect terminals Ts and E1 of the DLC1. SST 09843-18020
(b) Start the engine.
(c) Check that the warning light blinks about 4 times every 1 second.
(d) Stop the vehicle on a level surface for more than 1 second.






4. Drive Vehicle
- Drive the vehicle faster than 45km/h (28 mph) for several seconds.
- The warning light is "OFF" when it works normally.






5. Read DTC
(a) Stop the vehicle and the warning light will begin to blink.
(b) Using SST, connect the terminals Tc and E1 of DLC1







(c) Read the number of blinks of the ABS warning light. (compare to accompanying table/chart)

DTC OF SPEED SENSOR CHECK FUNCTION:

Hint:
If normal, the warning light blinks about 2 times per second.






- If 2 or more malfunctions are indicated at the same time, the smallest numbered code will be displayed 1st.


6. Repair Malfunctioning Parts
- Repair or rep;ace the malfunctioning parts.

Hint:
When repairing or replacing parts, turn the ignition switch "OFF".



7. Remove SST
- Remove the SST from terminals Tc, Ts and E1 of the DLC1. SST 09843-18020