Displaying & Reading Trouble Codes

NOTE: This is the only information provided by the manufacturer for reading diagnostic trouble codes for this system.

PRE-CHECK

1. DIAGNOSIS SYSTEM




a. Release the parking brake lever.
b. Check the indicator.
When the ignition switch is turned ON, check that the ABS warning light, BRAKE warning light, TRAC OFF indicator light and SLIP indicator light go on for 3 seconds.

HINT:
- When the parking brake is applied or the lever of the brake fluid is low, the BRAKE warning light is lit.
- If the indicator check result is not normal, proceed to troubleshooting for the ABS warning light circuit, BRAKE warning light circuit, TRAC OFF indicator light circuit and SLIP indicator light circuit.

Trouble Area
ABS warning light circuit
BRAKE warning light circuit
TRAC OFF indicator light circuit
SLIP indicator light circuit




c. In case of not using hand-held tester:
Check the DTC.
1. Using SST, connect terminals Tc and CG of DLC3.
SST 09843-18040
2. Turn the ignition switch ON.
3. Read the DTC from the ABS warning light and TRAC OFF indicator light on the combination meter.

HINT:
- If no code appears, inspect the ABS warning light circuit or TRAC OFF indicator light circuit.

Trouble Area
ABS warning light circuit
TRAC OFF indicator light circuit




- As an example, the blinking patterns for normal code and codes 11 and 21 are shown.

4. Codes are explained in the code table.
5. After completing the check, disconnect terminals Tc and CG of DLC3 and turn off the display. If 2 or more malfunctions are indicated at the same time the lowest numbered DTC will be displayed 1st.




d. In case of using hand-held tester:
Check the DTC.
1. Hook up the hand-held tester to the DLC3.
2. Turn the ignition switch ON.
3. Read the DTC by following the prompts on the tester screen.

HINT: Please refer to the hand-held tester operator's manual for further details.




e. In case of not using hand-held tester:
Clear the DTC.
1. Using SST, connect terminals Tc and CG of DLC3.
SST 09843-18040
2. Turn the ignition switch ON.
3. Clear the DTC stored in ECU by depressing the brake pedal 8 or more times within 5 seconds.
4. Check that the warning light shows the normal code.
5. Remove the SST from the terminals of DLC3.
SST 09843-18040

HINT: The DTC stored in the ECU will be erased when the battery terminal is disconnected for the troubleshooting.




f. In case of using hand-held tester:
Clear the DTC.
1. Hook up the hand-held tester to the DLC3.
2. Turn the ignition switch ON.
3. Operate the hand-held tester to erase the codes. (See hand-held tester operator's manual.)

2. FREEZE FRAME DATA
a. The vehicle (sensor) status at the occurrence of abnormality of the diagnosis code and during the ABS operating can be memorized and displayed using the hand-held tester.
b. Only one record of freeze frame data is stored, however, freeze frame data during the ABS operating is always up-dated. After the storage of freeze frame data, up to 31 ignition "ON" operations are stored and displayed.






HINT: If the ignition switch "ON" operation exceeds 31 times, "31" appears on the display.

c. If the diagnosis code abnormality occurs, the freeze frame data at the occurrence of the abnormality is stored but the ABS actuation data is deleted.

3. SPEED SENSOR SIGNAL CHECK
a. In case of not using hand-held tester:
Check the speed sensor signal.




1. Turn the ignition switch OFF.
2. Using SST, connect terminals Ts and CG of 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 vehicle straight forward.
Drive vehicle faster than 45 km/h (28 mph) for several seconds.
6. Stop the vehicle.
7. Using SST, connect terminals Tc and CG of DLC3.
SST 09843-18040
8. Read the number of blinks of the ABS warning light.






HINT:
- See the list of DTC shown.
- If every 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 1st.

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




b. In case of using hand-held tester:
Check the speed sensor signal.
1. Hook up the hand-held tester to the DLC3.
2. Do step (3) to (6).
3. Read the DTC by following the prompts on the tester screen.

HINT: Please refer to the hand-held tester operator's manual for further details.

C1271/71 - C1281/81:

DTC of speed sensor check function