Test Z: The Trailer Lamps Are On Continuously

PINPOINT TEST Z: THE TRAILER LAMPS ARE ON CONTINUOUSLY

Z1:

Z1-Z3:

Normal Operation
Voltage to the trailer tow lamps is controlled by the smart junction box (SJB). Circuits CAT06 (YE) and CAT09 (GN) supply voltage to the trailer tow LH and RH stoplamps, respectively.

Possible Causes
- Circuit CAT06 (YE) short to voltage
- Circuit CAT09 (GN) short to voltage
- Trailer
- SJB