DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 91 (Heating / Air Conditioning System (HV) - Diagnostic Codes (2 Of 3)) >> AIR CONDITIONING SYSTEM (for HV Model) >> DTC B1498-87: A/C Inverter Local Missing Message [11/2023 - ] >> Procedure

DTC B1498-87: A/C Inverter Local Missing Message [11/2023 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR DTC (HYBRID CONTROL) 
    1. Check for DTCs.

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Result Proceed to
      P058A-01 and P162B-87 are not output A
      P058A-01 or P162B-87 is output B

    Result: 

    B 

    See step  7

    Result: 

    A 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (COMPRESSOR WITH MOTOR ASSEMBLY - AUXILIARY BATTERY AND BODY GROUND) 
    WARNING:

    Do not disconnect the connector on the high-voltage side.

    NOTE:

    As other DTCs will be stored when the ignition switch is turned to ON with the connector disconnected, be sure to clear the DTCs after the inspection.

    Pre-procedure1

    1. Disconnect the C65 compressor with motor assembly connector.
      NOTE:

      Do not allow any foreign matter or water to enter the compressor with motor assembly.

      Procedure1

    2. Measure the voltage according to the value(s) in the table below.
      GTY1179582Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Compressor with Motor Assembly)

      Standard Voltage

      Tester Connection Condition Specified Condition
      C65-1 (IG1) - Body ground Ignition switch ON 11 to 14 V
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      C65-2 (GND) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (COMPRESSOR WITH MOTOR ASSEMBLY - HYBRID VEHICLE CONTROL ECU) 

    Pre-procedure1

    1. Disconnect the C65 compressor with motor assembly connector.
      NOTE:

      Do not allow any foreign matter or water to enter the compressor with motor assembly.

    2. Disconnect the A32 hybrid vehicle control ECU connector.

      Procedure1

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      C65-3 (DOUT) - A32-28 (LIN3) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. INSPECT HV AIR CONDITIONING WIRE 
    WARNING:

    Be sure to wear insulated gloves.

    Pre-procedure1

    1. Disconnect the m1 compressor with motor assembly connector.
      NOTE:

      Do not allow any foreign matter or water to enter the compressor with motor assembly.

    2. Remove the HV air conditioning wire from the inverter with converter assembly.
      NOTE:

      Make sure that no foreign matter, water, etc., enters the inverter with converter assembly.

      HINT: 

      Refer to REMOVAL [11/2023 - ]

      Procedure1

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      m1-2 (PB) - m2-1 (ACPB) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    See step  6

    Result: 

    OK 

    See step  5

  5. INSPECT HV AIR CONDITIONING WIRE 
    WARNING:

    Be sure to wear insulated gloves.

    Pre-procedure1

    1. Disconnect the m1 compressor with motor assembly connector.
      NOTE:

      Do not allow any foreign matter or water to enter the compressor with motor assembly.

    2. Remove the HV air conditioning wire from the inverter with converter assembly.
      NOTE:

      Make sure that no foreign matter, water, etc., enters the inverter with converter assembly.

      HINT: 

      Refer to REMOVAL [11/2023 - ]

      Procedure1

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      m1-1 (PE) - m2-2 (ACPE) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    OK 

    REPLACE COMPRESSOR WITH MOTOR ASSEMBLY. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    NG 

    REPLACE HV AIR CONDITIONING WIRE. Refer to  REMOVAL [11/2023 - ] 

  6. INSPECT HV AIR CONDITIONING WIRE 
    WARNING:

    Be sure to wear insulated gloves.

    Pre-procedure1

    1. Disconnect the m1 compressor with motor assembly connector.
      NOTE:

      Do not allow any foreign matter or water to enter the compressor with motor assembly.

    2. Remove the HV air conditioning wire from the inverter with converter assembly.
      NOTE:

      Make sure that no foreign matter, water, etc., enters the inverter with converter assembly.

      HINT: 

      Refer to REMOVAL [11/2023 - ]

      Procedure1

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      m1-2 (PB) - Other terminals and body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    OK 

    REPLACE COMPRESSOR WITH MOTOR ASSEMBLY AND HV AIR CONDITIONING WIRE 

    Compressor with motor assembly: 

    HV air conditioning wire: 

    Result: 

    NG 

    REPLACE HV AIR CONDITIONING WIRE. Refer to  REMOVAL [11/2023 - ] 

  7. CHECK FOR DTC 

    Pre-procedure1

    1. Disconnect the M107 battery state sensor assembly connector.

      Procedure1

    2. Check for DTCs.

      Body Electrical > Air Conditioner > Trouble Codes 

      Result

      Result Proceed to
      B1498-87 is not output A
      B1498-87 is output B

      Post-procedure1

    3. None

    Result: 

    A 

    REPLACE BATTERY STATE SENSOR ASSEMBLY. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    B 

    See step  8

  8. CHECK FOR DTC (HYBRID CONTROL) 

    Pre-procedure1

    1. Connect the M107 battery state sensor assembly connector.
    2. Disconnect the C65 compressor with motor assembly connector.
      NOTE:

      Do not allow any foreign matter or water to enter the compressor with motor assembly.

      Procedure1

    3. Check for DTCs.

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Result Proceed to
      P058A-01 and P162B-87 are not output A
      P058A-01 or P162B-87 is output B

      Post-procedure1

    4. None

    Result: 

    A 

    REPLACE COMPRESSOR WITH MOTOR ASSEMBLY. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    B 

    See step  9

  9. CHECK HARNESS AND CONNECTOR (COMPRESSOR WITH MOTOR ASSEMBLY - HYBRID VEHICLE CONTROL ECU) 

    Pre-procedure1

    1. Disconnect the A32 hybrid vehicle control ECU connector.
    2. Disconnect the C65 compressor with motor assembly connector.
      NOTE:

      Do not allow any foreign matter or water to enter the compressor with motor assembly.

    3. Disconnect the M107 battery state sensor assembly connector.

      Procedure1

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A32-28 (LIN3) - C65-3 (DOUT) Always Below 1 Ω
      A32-28 (LIN3) - M107-2 (LIN) Always Below 1 Ω
      A32-28 (LIN3) - Other terminals and body ground Always 10 kΩ or higher
      C65-3 (DOUT) - Other terminals and body ground Always 10 kΩ or higher
      M107-2 (LIN) - Other terminals and body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    5. None

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

Diesel-Data.com