Test Z

PINPOINT TEST Z: THE TRAILER LAMPS ARE INOPERATIVE - RH TRAILER TURN SIGNALS/STOPLAMPS/HAZARD LAMPS

Test Z1-Z3:

Test Z4-Z5:

Normal Operation
When the RH trailer tow turn relay is energized, power is routed from circuit 175 (BK/YE) to the trailer tow connector through circuit 64 (DG). When circuit 378 (BN/YE) is supplied power from the multifunction switch (such as when the brakes are applied or the RH turn signal is engaged), the RH turn relay is energized. Ground is supplied to the trailer tow turn lamp relays through circuit 1205 (BK).

Possible Causes
- circuit 64 (DG) open
- circuit 175 (BK/YE) open
- circuit 378 (BN/YE) open
- circuit 1205 (BK) open
- trailer tow turn lamp relay
- trailer