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.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
If the circuit is not as specified, inspect the circuit connected to other parts.
- 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.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
TESTER CONNECTION SPECIFIED CONDITIONTester Connection Condition Specified Condition 1 - 3 Stop Light Switch ON (Brake Pedal Depressed) 10 - 14V 1 - 3 Stop Light Switch OFF (Brake Pedal Released) 0 V 2 - 3 Always 10 - 14 V 3 - 4 Stop Light Switch ON (Brake Pedal Depressed) 10 - 14 V 3 - 4 Stop Light Switch OFF (Brake Pedal Released) 0 V 3 - 5 Light Control Switch TAIL Or HEAD 10 - 14 V 3 - 5 Light Control Switch OFF 0 V Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
If the circuit is not as specified, inspect the circuit connected to other parts.
- INSPECT TOWING TAIL RELAY CONTINUITY TESTER CONNECTION SPECIFIED CONDITION
Condition Tester Connection Specified Condition Always 1 - 2 Continuity Always 3 - 5 No Continuity Apply B+ Between Terminals 1 And 2. 3 - 5 Continuity If continuity is not as specified, replace the relay.
- INSPECT BATT CHARGE RELAY CIRCUIT TESTER CONNECTION SPECIFIED CONDITION
Condition Tester Connection Specified Condition Always 1 - 2 Continuity Always 3 - 5 No Continuity Apply B+ Between Terminals 1 And 2. 3 - 5 Continuity If continuity is not as specified, replace the relay.