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On-Vehicle Inspection

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  1. INSPECT TURN SIGNAL FLASHER CIRCUIT 
    1. Measure voltage between terminals as shown in the chart below.
      Fig 1: Measuring Voltage Terminals As Shown In Chart Below
      G03476399Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      SPECIFIED TESTER CONDITION

      Tester connection Condition Specified condition
      9 - Ground Always Continuity
      1 - Ground Turn ignition switch ON Battery positive voltage
      1 - Ground Turn ignition switch OFF No voltage
      6 - Ground Always Battery positive voltage
    2. Connect the connector to the turn signal flasher and turn the ignition switch to ON, and inspect the wire harness side connector on the back side as shown in the chart.
    SPECIFIED TESTER CONDITION

    Tester connection Condition Specified condition
    2 - Ground Hazard switch OFF --> ON 0 V <=> 10 - 14 V (60 to 120 time per minutes)
    2 - Ground Turn signal switch (right turn) OFF --> ON 0 V <=> 10 - 14 V (60 to 120 time per minutes)
    2 - Ground Hazard switch ON --> OFF 0 V <=> 10 - 14 V (60 to 120 time per minutes) --> 10 - 14 V
    3 - Ground Hazard switch OFF --> ON 0 V <=> 10 - 14 V (60 to 120 time per minutes)
    3 - Ground Turn signal switch (right turn) OFF --> ON 0 V <=> 10 - 14 V (60 to 120 time per minutes)
    4 - Ground Hazard switch OFF --> ON 0 V <=> 10 - 14 V (60 to 120 time per minutes)
    4 - Ground Turn signal switch (left turn) OFF --> ON 0 V <=> 10 - 14 V (60 to 120 time per minutes)
    4 - Ground Turn signal switch (left turn) ON --> OFF 0 V <=> 10 - 14 V (60 to 120 time per minutes) --> 10 - 14 V
    5 - Ground Hazard switch OFF --> ON 0 V <=> 10 - 14 V (60 to 120 time per minutes)
    5 - Ground Turn signal switch (left turn) OFF --> ON 0 V <=> 10 - 14 V (60 to 120 time per minutes)
    7 - Ground Turn signal switch (left turn) OFF --> ON 10 - 14 V --> 0 V
    8 - Ground Turn signal switch (right turn) OFF --> ON 10 - 14 V --> 0 V
    10 - Ground Hazard switch OFF --> ON 10 - 14 V --> 0 V
    12 - Ground Turn ignition switch ON and engine OFF --> ON 10 - 14 V --> 0 V
    Fig 2: Identifying Towing Relay Connector
    G03476400Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT TOWING CONVERTER RELAY 
    1. Measure voltage between terminals as shown in the chart below.
    SPECIFIED TESTER CONDITION

    Tester connection Condition Specified condition
    1 - Ground Always Battery positive voltage
    2 - Ground Turn signal switch (right turn) OFF --> ON 0V --> 10 - 14 V (60 to 120 time per minutes)
    2 - Ground Depress the brake pedal Battery positive voltage
    3 - Ground Turn signal switch (right turn) OFF --> ON 0V --> 10 - 14 V (60 to 120 time per minutes)
    4 - Ground Turn signal switch (left turn) OFF --> ON 0V --> 10 - 14 V (60 to 120 time per minutes)
    4 - Ground Depress the brake pedal Battery positive voltage
    6 - Ground Always Continuity
    8 - Ground Depress the brake pedal Battery positive voltage
    9 - Ground Turn signal switch (left turn) OFF --> ON 0V --> 10 - 14 V (60 to 120 time per minutes)
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