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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 33 (Hybrid Battery Control System - Service Information (3 Of 3)) >> HV RELAY ASSEMBLY (for LITHIUM-ION BATTERY) >> Inspection [08/2020 - ] >> Procedure

Inspection [08/2020 - ]: Procedure

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  1. INSPECT HV BATTERY JUNCTION BLOCK ASSEMBLY 
    1. Inspect SMRB:
      1. Measure the resistance according to the value(s) in the table below.
        GTY947092Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Component without harness connected
        (HV Battery Junction Block Assembly)        		 - -

        Standard Resistance

        Tester Connection Condition Specified Condition
        y18-1 (+) - a2-1 (CBI) Auxiliary battery voltage not applied between terminals N22-1 (SMRB) and N22-3 (GND) 10 kΩ or higher
        Auxiliary battery voltage applied between terminals N22-1 (SMRB) and N22-3 (GND) Below 1 Ω
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Denso Made 

        Tester Connection Condition Specified Condition
        N22-1 (SMRB) - N22-3 (GND) -40 to 80°C (-40 to 176°F) 25.0 to 59.0 Ω

        Panasonic Made 

        Tester Connection Condition Specified Condition
        N22-1 (SMRB) - N22-3 (GND) -40 to 80°C (-40 to 176°F) 20.6 to 40.8 Ω

        If the result is not as specified, replace the HV battery junction block assembly.

    2. Inspect SMRG:
      1. Measure the resistance according to the value(s) in the table below.
        GTY947110Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Component without harness connected
        (HV Battery Junction Block Assembly)        		 - -

        Standard Resistance

        Tester Connection Condition Specified Condition
        y12-1 (-) - a3-1 (CEI) Auxiliary battery voltage not applied between terminals N22-4 (SMRG) and N22-3 (GND) 10 kΩ or higher
        Auxiliary battery voltage applied between terminals N22-4 (SMRG) and N22-3 (GND) Below 1 Ω
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Denso Made 

        Tester Connection Condition Specified Condition
        N22-4 (SMRG) - N22-3 (GND) -40 to 80°C (-40 to 176°F) 25.0 to 59.0 Ω

        Panasonic Made 

        Tester Connection Condition Specified Condition
        N22-4 (SMRG) - N22-3 (GND) -40 to 80°C (-40 to 176°F) 20.6 to 40.8 Ω

        If the result is not as specified, replace the HV battery junction block assembly.

    3. Inspect SMRP:
      1. Measure the resistance according to the value(s) in the table below.
        GTY947091Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Component without harness connected
        (HV Battery Junction Block Assembly)        		 - -

        Standard Resistance

        Tester Connection Condition Specified Condition
        y12-1 (-) - a3-1 (CEI) Auxiliary battery voltage not applied between terminals N22-2 (SMRP) and N22-3 (GND) 10 kΩ or higher
        Auxiliary battery voltage applied between terminals N22-2 (SMRP) and N22-3 (GND) 24.3 to 29.7 Ω
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        N22-2 (SMRP) - N22-3 (GND) -40 to 80°C (-40 to 176°F) 140 to 290 Ω

        If the result is not as specified, replace the HV battery junction block assembly.

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