Speed Sensor Diagnostic System

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 VOLTAGE
Inspect that the battery voltage is about 12 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 in engine room.
SST 09843-18020
(b) Pull the parking brake lever up, and start the engine.



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

4. INSPECT SENSOR SIGNAL CHANGE
(a) Release the parking brake.
(b) Drive the faster than 80 km/h (50 mph) for several seconds.



(c) Check that the warning light signal.
If the warning light signal is abnormal. perform the steps 5 and 6.
5. READ DIAGNOSTIC TROUBLE CODE
(a) Stop the vehicle, and warning light will being to blink.



(b) Using SST, connect the terminals Tc and E1 of data link connector 1.
(c) Read the number of blinks of the ABS warning light.
(See DIAGNOSTIC TROUBLE CODE)



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



If two 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




DIAGNOSTIC CODE