Daytime Running Lamp Control Unit: Testing and Inspection

Inspection

1. The daytime running light unit (A) is integrated in the junction box.




2. Check that the light operate according to the following timing chart.




3. If the daytime running light is not operated well, inspect the connector and terminals to be sure they are all making good contact.
If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
If the terminals look OK, go to step 4.
4. Make these input tests at the connector
If any test indicates a problem, find and by using ETM correct the cause, then recheck the system.
If all the input tests prove OK, the junction box must be faulty; replace it.

Inspection

1. Check for continuity and measure the resistance between No.1 and NO.3 terminals.

Standard value :2.5Ohms ± 5%





2. If resistance is not as specified, replace the DRL resistor.