Symptom Related Diagnostic Procedures

DAYTIME LIGHT SYSTEM INOPERATIVE





Description
The daytime light system is inoperative even though the combination switch (lighting and turn signal switch) and parking brake switch are in the normal setting, also whenever engine is operating.




Diagnosis Procedure

NOTE:
Before performing the diagnosis, check that the following is normal.
- High beam lamp function
- Parking brake warning lamp
- Engine operation status
1.COMBINATION SWITCH (LIGHTING AND TURN SIGNAL SWITCH) INSPECTION
Check the combination switch (lighting and turn signal switch). System Description.
Is the combination switch (lighting and turn signal switch) normal?
YES - GO TO 2.
NO - Repair or replace the malfunctioning part.
2.CHECK DAYTIME LIGHT REQUEST SIGNAL INPUT
CONSULT-III DATA MONITOR
1. Parking brake switch is released.
2. Start engine.
3. Select "DTRL REQ" of IPDM E/R DATA MONITOR item.
4. While operating the combination switch (lighting and turn signal switch), check the monitor status.





Is the item status normal?
YES - GO TO 3.
NO - Replace BCM. Service and Repair.
3.DAYTIME LIGHT RELAY CIRCUIT INSPECTION
Check the daytime light relay circuit. Daytime Light Relay Circuit.
Is the daytime light relay circuit normal?
YES - Replace IPDM E/R. Service and Repair.
NO - Repair or replace the malfunctioning part.