Tundra 4WD V6-3.4L (5VZ-FE) (2004)
1. INSPECT TOWING CONVERTER CIRCUIT
Remove the towing converter with the connector still connected and inspect the wire harness side connector from the backside, as shown in the
table.
It the result is as specitied, replace the towing converter.
2. INSPECT TOWING TAIL RELAY (Marking: TOW TAIL) CONTINUITY
If the continuity is not as specified, replace the relay.