Tundra 2WD V6-4.0L (1GR-FE) (2005)
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Remove the towing converter with the connector still connected and inspect the wire harness side connector from the backside, as shown in the
table.
If the result is as specified, replace the towing converter.
2. INSPECT TOWING TAIL RELAY CONTINUITY
If the continuity is not as specified, replace the relay.
3. INSPECT SUB BATTERY RELAY (Marking: SUB BATT) CONTINUITY
If the continuity is not as specified, replace the relay.