Parking lights goes off issue. Help !

Hi chally lovers !

I a French owner of a 2012 392HEMI SRT8 challenger VIN 2C3CDYCJ3CH105897

I have a very tricky issue and a very hard time to gather information and tips. We do not have DODGE official dealer in France but only a very few “specialized” workshops and if they accept may car they will charge me insane so I tried to trouble shoot by myself sinc long time now …

The issue :

- Parking lights (front ambers+4 side markers+central tail light bar) goes off after 2 minutes when ignition is on. Then impossible to turn on again. The real problem is the tail lights because no more taillight at night. This does not happen when ignition is off and you turn the parking lights on with the turning selector on dash.

- Error code is released for parking lights circuit. B165C ACTIVE Park Lamp Control Circuit Low

- Wiring is white with violet stripe for parking lights.

- Turn and brake signals still works properly.

Investigations done :

- Swap hood and trunk fuse/relay boards with an other challenger’s : no result.

- When P lights goes off the voltage in circuit drop from 12V to -5V;

- Check all connections, clean, tight etc : no result.

- Check fuses : all good.

- Remove side markers bulb : no result.

- Disconnect ambers : no result.

- Disconnect tail light center bar : no result.



Main questions :

- Impossible to find electrical drawings? Where is the parking lights relay ?

- As there is a delay before switching off I assume something is kind of heating before tripping ?

- Could this be a ECU action ?

If someone can help. Thanks.

 

Hi.
Finally the issue was found. 2 parking lights circuit wires were badly tied to harness and rubbing against left exhaust manifold heat shield. The cable insulation was grinned to cooper creating a ground fault.
All is OK now.

 

Congratulations on finally finding the problem. Following up with the group is appreciated.
Have a good new year!