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On-Vehicle Inspection

WARNING: This page is about a different car, the 2004 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT TURN SIGNAL FLASHER CIRCUIT (w/o: Daytime Running Light) 
    1. Measure voltage between terminals as shown in the chart below.
      Fig 1: Identifying Turn Signal Flasher Circuit Terminal
      G02857789Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      SPECIFIED CONDITION

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

      Tester connection Condition Specified condition
      2 - Ground Hazard switch OFF --> ON 0V --> 10-14 V (60 to 120 time per minutes)
      2 - Ground Turn signal switch (right turn) OFF --> ON 0V --> 10-14 V (60 to 120 time per minutes)
      3 - Ground Hazard switch OFF --> ON 0V --> 10-14 V (60 to 120 time per minutes)
      3 - Ground Turn signal switch (left turn) OFF --> ON 0V --> 10-14 V (60 to 120 time per minutes)
      5 - Ground Turn signal switch (left turn) OFF --> ON 10-14V --> 0V
      6 - Ground Turn signal switch (right turn) OFF --> ON 10-14V --> 0V
      8 - Ground Hazard switch OFF --> ON 10-14V --> 0V
  2. INSPECT TURN SIGNAL FLASHER CIRCUIT (w/: Daytime Running Light) 
    1. Measure voltage between terminals as shown in the chart below.
      Fig 2: Identifying Turn Signal Flasher Circuit Terminal
      G02857790Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      SPECIFIED CONDITION

      Tester connection Condition Specified condition
      9 - Ground Constant Continuity
      1 - Ground Turn ignition switch ON Battery positive voltage
      1 - Ground Turn ignition switch OFF No voltage
      6 - Ground Constant 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 from the back side as shown in the chart.
      SPECIFIED CONDITION

      Tester connection Condition Specified condition
      2 - Ground Hazard switch OFF --> ON 0V -->10-14 V (60 to 120 time per minutes)
      2 - Ground Turn signal switch (right turn) OFF --> ON 0V -->10-14 V (60 to 120 time per minutes)
      2 - Ground Turn signal switch (right turn) ON --> OFF 10-14 V (60 to 120 time per minutes) --> 10-14V
      3 - Ground Hazard switch OFF --> ON 0V --> 10-14 V (60 to 120 time per minutes)
      3 - Ground Turn signal switch (right turn) OFF--> ON 0V -->10-14 V (60 to 120 time per minutes)
      4 - Ground Hazard switch 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 Turn signal switch (left turn) ON --> OFF 10-14 V (60 to 120 time per minutes) --> 10-14V
      5 - Ground Hazard switch OFF --> ON 0V -->10-14 V (60 to 120 time per minutes)
      5 - Ground Turn signal switch (left turn) OFF --> ON 0V -->10-14 V (60 to 120 time per minutes)
      7 - Ground Turn signal switch (left turn) OFF --> ON 10-14 V --> 0V
      8 - Ground Turn signal switch (right turn) OFF --> ON 10-14 V --> 0V
      10 - Ground Hazard switch OFF --> ON 10-14 V --> 0V
  3. INSPECT TOWING CONVERTER RELAY 
    1. Measure voltage between terminals as shown in the chart below.
      Fig 3: Identifying Towing Converter Relay Terminal
      G02857791Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      SPECIFIED CONDITION

      Tester connection Condition Specified condition
      1 - Ground Constant 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 Constant 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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