Component Tests and General Diagnostics

SPEED SENSOR DIAGNOSIS SYSTEM

DIAGNOSIS SYSTEM INSPECTION

PRECAUTION
While checking the speed sensor diagnosis system, ABS does not operate and brake system operates as normal brake system.
1. INSPECT BATTERY POSITIVE VOLTAGE
Inspect that the battery positive voltage is 10 - 14 V.





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

3. PERFORM FOLLOWING STEPS





(a) Using SST, connect terminals Ts and E1 of the data link connector 1. SST 09843-18020
(b) Start the engine.





(c) Check that the warning light blinks about 4 times every 1 second.





4. INSPECT SENSOR SIGNAL CHANGE
(a) Drive the faster than 45 km/h (28 mph) for several seconds.
(b) Check that the warning light signal turns off.
If the warning light signal is abnormal, perform the steps 5 and 6.

HINT: The high-speed check is possible at 80 km/h .(50 mph) or higher.

5. READ DIAGNOSTIC CODE





(a) Stop the vehicle, and warning light will begin to blink.
(b) Using SST, connect terminals Tc and E1 of the data link connector 1.





(c) Read the number of blinks of the ABS warning light. (See DIAGNOSTIC CODE)





HINT: If normal, the warning light blinks about 4 times every 1 second.

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

6. REPAIR MALFUNCTIONING PARTS
Repair or replace the malfunctioning parts.

HINT: When repairing or replacing parts, turn the ignition switch to OFF.

7. REMOVE SST
Remove the SST from terminals Tc, Ts and E1 of the data link connector 1. SST 09843-18020