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On-Vehicle Inspection [11/2016 - ]: Procedure

WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK AUXILIARY BATTERY 
    1. Check that the auxiliary battery cables are connected to the correct terminals.

      If they are not, connect them properly.

    2. Check the auxiliary battery for damage and deformation. If severe damage, deformation or leakage is found, replace the auxiliary battery.
  2. CHECK AUXILIARY BATTERY VOLTAGE 
    1. Turn the power switch off and turn on the high beam headlights for 30 seconds. This will remove the surface charge from the auxiliary battery.
    2. Measure the auxiliary battery voltage according to the value(s) in the table below.

      Result

      Tester Connection Condition Specified Condition Result
      Positive (+) auxiliary battery terminal - Negative (-) auxiliary battery terminal 20°C (68°F), Power switch off 12.5 V or higher Auxiliary battery is OK
      12.0 to 12.4 V Recharge auxiliary battery
      Below 12.0 V Replace auxiliary battery
  3. RECHARGE AUXILIARY BATTERY 
    1. Recharge the auxiliary battery.

      HINT: 

      • Recharge the auxiliary battery according to the charger's instructions.
      • Apply the appropriate charging current according to the type of auxiliary battery shown in the table below.
      Auxiliary Battery Type Charging Current
      S55D23L Below 5 A
    2. Turn the power switch off and turn on the high beam headlights for 30 seconds. This will remove the surface charge from the auxiliary battery.
    3. Measure the auxiliary battery voltage according to the value(s) in the table below.

      Result

      Tester Connection Condition Specified Condition Result
      Positive (+) auxiliary battery terminal - Negative (-) auxiliary battery terminal 20°C (68°F), Power switch off 12.5 V or higher Auxiliary battery is OK
      12.0 to 12.4 V Recharge auxiliary battery
      Below 12.0 V Replace auxiliary battery
  4. CHECK AUXILIARY BATTERY TERMINAL, FUSIBLE LINK AND FUSE 
    1. Check that the auxiliary battery terminals are not loose or corroded.

      Positive (+) Auxiliary Battery Terminal 

      Torque: 6.4 N*m (65 kgf*cm, 57 in.*lbf) 

      Negative (-) Auxiliary Battery Terminal 

      Torque: 6.5 N*m (66 kgf*cm, 58 in.*lbf) 

      If the terminals are corroded, clean them.

    2. Measure the resistance of each fusible link and fuse for the auxiliary battery charging system.

      Standard Resistance

      Below 1 Ω

      If any of the results is not as specified, replace the fusible link or fuse as necessary.

  5. CHECK AMD TERMINAL 
    1. Remove the service plug grip.

      Refer to REMOVAL [02/2014 - ]

    2. Check that the AMD terminal is connected securely, and there is no contact problem.

      If there are any arc marks, replace the affected parts.

    3. Check that the nut for the AMD terminal is tightened to the specified torque.

      If there are no arc marks and the AMD terminal connection is faulty, connect the AMD terminal securely.

      Torque: 8.5 N*m (87 kgf*cm, 75 in.*lbf) 

    4. Install the service plug grip.

      Refer to INSTALLATION [02/2014 - ]

  6. CHECK DC/DC CONVERTER FUNCTION 
    1. Connect the AC/DC 400 A probe to the positive (+) auxiliary battery cable.
      GTY440930Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Probe Direction
      *b Current Flowing into Auxiliary Battery
    2. Turn the power switch on (READY) and leave the vehicle as it is until the electric current flowing into the auxiliary battery becomes 10 A or less.
    3. Turn on the high beam headlights, and turn the blower motor switch to the HI position and the rear window defogger on.
    4. Measure the current and voltage according to the value(s) in the table below.
      GTY450666Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Probe Direction
      *b Current Flowing from Auxiliary Battery

      Result

      Item Tester Connection Condition Specified Condition
      Current flowing from auxiliary battery Positive (+) auxiliary battery cable Power switch on (READY)
      (The high beam headlights are on, the blower motor switch is in the HI position, and the rear window defogger is turned on.)      		 0 A or less
      (No current from auxiliary battery)
      Auxiliary battery voltage Positive (+) auxiliary battery terminal - Negative (-) auxiliary battery terminal 13 to 15 V

      If the result is not as specified, replace the inverter with converter assembly.

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