For the parking light, there are 3 things that can cause it :
1. Faulty light switch.
2. Faulty parklamp relay.
3. Autolamp control module is not cutting off when ignition is turned off.
When problem occurs, to test if it is the switch, disconnect switch connector and if light stays on, it is not due to the switch.
Unplug the parklamp relay and connect a test lamp across either Tan/White and Light Green/Yellow wire and if test lamp lights up, the Autolamp Module is at fault.
Is vehicle equipped with Daytime Running Lights?
Wednesday, September 20th, 2017 AT 2:14 PM