Component Tests

SENSOR SIGNAL CHECK (TEST MODE) (USING HAND-HELD TESTER)

If the ignition switch is turned from the ON to the ACC or LOCK position during SIGNAL CHECK (test mode), DTC of sensor check function will be erased.

a. Procedures for sensor signal check




1. Turn the ignition switch off.
2. Check that the shift lever is in P position.




3. Connect the hand-held tester to the DLC3.
4. Start the engine.
5. Operate the hand-held tester in SIGNAL CHECK (test mode).
6. Check that the ABS warning light blinks.

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

Trouble area
ABS warning light

b. Start the sensor signal check.




1. Drive vehicle straight forward.

Drive the vehicle at a speed of 28 to 34 mph (45 to 55 km/h) or higher for several seconds.

HINT: The sensor check may not be completed if the vehicle has its wheel spun or its steering wheel steered during this check.

2. Stop the vehicle.




c. Signal check results.
d. Read the DTCs.

HINT:
- If the check result is OK, the ABS warning light blink goes off when the brake pedal is once depressed.
- See the list of DTC (Refer to step 3).




- If every sensor is normal, there is a normal system code 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 1st.

C1271/71 - C1278/78:

DTC of speed sensor check function

HINT: The codes in this table are output only in TEST MODE.