Trailer Towing System: Inspection

INSPECT TOWING CONVERTER CIRCUIT
Remove the towing converter with connector still connected and inspect the wire harness side connector from the back side, as shown in the table.

Fig 1: Inspecting Towing Converter Connector Terminals
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Fig 2: Towing Converter Connector Specifications
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Trailer Socket 7 Pin Type: INSPECT BRAKE CONTROLLER CIRCUIT
Remove the brake controller with connector still connected and inspect the wire harness side connector from the back side, as shown in the table.

Fig 3: Identifying Brake Controller Connector Terminals
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Fig 4: Brake Controller Connector Terminal Specifications
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If the circuit is not as specified, inspect the circuit connected to other parts.
INSPECT TOWING TAIL RELAY CONTINUITY

Fig 5: Identifying Towing Tail Relay Terminals
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Fig 6: Towing Tail Relay Terminal Specifications
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If continuity is not as specified, replace the relay.
INSPECT BATT CHARGE RELAY CIRCUIT

Fig 7: Identifying Batt Charge Relay Terminals
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Fig 8: Batt Charge Relay Terminal Specifications
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If continuity is not as specified, replace the relay.