Test V
PINPOINT TEST V: THE INDIVIDUAL TRAILER LAMP IS INOPERATIVETest V1-V2:
Test V3-V5:
Test V6-V8:
Test V8-V11:
Test V12:
Normal Operation
When the LH trailer tow turn relay is energized, power is routed from circuit 175 (BK/YE) to the trailer tow connector through circuit 52 (YE). When circuit 374 (DB/WH) is supplied power from the multifunction switch (such as when the brakes are applied or the LH turn signal is engaged), the LH turn relay is energized. 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 374 (DB/WH) open.
- Circuit 378 (BN/YE) open.
- Circuit 175 (BK/YE) open.
- Circuit 52 (YE) open.
- Circuit 64 (DG) open.
- Circuit 1205 (BK) open.
- Trailer tow turn lamp relay.
- Trailer.