FOREWORD

Outline

• The OBD (on-board diagnostic) test inspects the integrity and function of the discharge headlight and output the results when requested by the specific tests.

• OBD test also:

- Provides a quick inspection of the discharge headlight.

- Is usually performed at the start of each diagnostic procedure.

- Provides verification after repairs to ensure that no other faults occurred during service.

• Diagnostic DTC can be read/cleared, using the SST (WDS or equivalent)

Read/clear diagnostic results

• This function allows you to read or clear DTCs in the discharge headlight control unit (LH) memory.

Reading DTCs Procedure Using WDS or equivalent

1. Connect WDS or equivalent to the vehicle DLC-2 16-pin connector.

2. Turn the ignition switch to ON (Engine OFF) or start engine.

3. Retrieve DTC by WDS or equivalent.

Clearing DTCs Procedures Using WDS or equivalent

1. After repairs have been made, perform the reading DTCs procedure.

2. Turn the ignition switch to ON (Engine OFF) or start engine.

3. Erase DTC by WDS or equivalent.

4. Ensure that the customer's concern has been resolved.

PID/Data Monitor and Record Procedure

1. Connect WDS or equivalent to the vehicle DLC-2 16-pin connector.

2. Turn the ignition switch to ON (Engine OFF) or start engine.

3. Access and monitor PIDs by WDS or equivalent.

Note

• The data monitor function monitors the calculated values of input/output signals in the discharge headlight control unit (LH) and the discharge headlight control unit (RH), and it does not directly display monitored value faults as faults in input/output parts themselves. If a monitored value is not within the specification it will be necessary to inspect input/output parts separately by such means as DTC inspection or the active command modes function.