Component Tests

SPEED SENSOR SIGNAL (TEST MODE)

a. When not using the hand-held tester:
Check the speed sensor signal.




1. Turn the ignition switch OFF.
2. Using SST, connect terminals Ts and CG of the DLC3.
SST 09843-18040

3. Start the engine.
4. Check that the ABS warning light blinks.

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

5. Drive the vehicle straight forward.

HINT: Drive the vehicle at faster than 45 km/h (28 mph) for several seconds.

6. Stop the vehicle.
7. Using SST, connect terminals Tc and CG of the DLC3.
SST 09843-18040




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

HINT:
- See the list of DTC shown.
- If each 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 malfunctions are indicated at the same time, the lowest numbered code will be displayed first.

9. After doing the check, disconnect the SST from terminals Ts, Tc and CG of the DLC3, and turn ignition switch OFF.
SST 09843-18040

b. When Using the hand-held tester:
Check the DTC.




1. Hook up the hand-held tester to the DLC3.
2. Perform steps (3) to (6).
3. Read the DTC by following the prompts on the tester screen.

C1271/71 - C1278/78:

DTC of speed sensor check function