Description of On-Board Diagnostics

DIAGNOSIS SYSTEM




a. Check the indicator light.
1. Set the absorber control switch to "NORM".
2. Turn the ignition switch ON and check that the absorber control indicator light goes on for 2 seconds.

HINT: If the indicator check result is not normal, proceed to troubleshooting for the absorber control indicator light circuit.

3. Start the engine.




4. Turn the absorber control switch "SPORT" and check the absorber control indicator light.

b. In case of not using LEXUS hand-held tester:
Check the DTC.
1. Turn the ignition switch OFF.




2. Using SST, connect terminals Tc and CG of the DLC3.
SST 09843-18040
3. Start the engine with the door open.
4. Read the DTC output by the absorber control indicator light.

HINT:
- If no code appears, inspect the Tc circuit and absorber control indicator light circuit.




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

5. Codes are explained in the code table.
6. After completing the check, disconnect terminals Tc and CG of the 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.




c. In case of using LEXUS hand-held tester:
Check the DTC.
1. Hook up the LEXUS 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 LEXUS hand-held tester operator's manual for further details.

d. In case of not using LEXUS hand-held tester:
Clear the DTC.




1. Using SST, connect terminals Tc and CG of the 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.

NOTE: By completing the above operation, the DTC of the ABS, TRAC and VSC will be cancelled out.

4. Check that the indicator light shows the normal code.
5. Remove the SST from the terminals of the DLC3.
SST 09843-18040




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