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Home >> Toyota >> 2021 >> RAV4 Prime SE >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System - Diagnostic Codes (1 Of 2) (PHEV) >> Meter / Gauge System >> DTC B1321-87: Lost Communication with EMV Missing Message [06/2020 - 10/2022] >> Procedure

DTC B1321-87: Lost Communication with EMV Missing Message [06/2020 - 10/2022]: Procedure

  1. CHECK VEHICLE TYPE 
    1. Check vehicle condition.

      Result

      Result  Proceed to 
      w/ Headup Display System A
      w/o Headup Display System B

    Result: 

    B 

    See step  7

    Result: 

    A 

    See step  2

  2. CHECK FOR DTC 
    1. Check if meter/gauge system DTCs are output.

      Refer to DTC CHECK / CLEAR [06/2020 - ]

      Body Electrical > Combination Meter > Trouble Codes 

    2. Check if audio and visual system*1 or navigation system*2 DTCs are output.
      1. *1: w/ Audio and Visual System
      2. *2: w/ Navigation System

      w/ Audio and Visual System: Refer to DTC CHECK / CLEAR [06/2020 - 10/2022]

      w/ Navigaiton System: Refer to DTC CHECK / CLEAR [06/2020 - 10/2022]

      Body Electrical > Navigation System > Trouble Codes 

    3. Check if headup display system system DTCs are output.

      Refer to DTC CHECK / CLEAR [06/2020 - ]

      Body Electrical > Head Up Display > Trouble Codes 

    4. Check the DTCs and output pattern according to the following table.
      Pattern DTC Output GTS Display Name
      Combination Meter Navigation System Head up Display
      B1321-87 B1324 B1321-87
      Pattern 1 ◦ ◦ ◦
      Pattern 2 ◦ ◦ -
      Pattern 3 ◦ - -

      ◦: DTC is output.

      -: DTC is not output

      Result

      Result Proceed to
      Pattern 1 A
      Pattern 2 B
      Pattern 3 C

    Result: 

    B 

    See step  6

    Result: 

    C 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [06/2020 - 10/2022] 

    Result: 

    A 

    See step  3

  3. CHECK FOR METER MIRROR SUB-ASSEMBLY 
    1. Disconnect the G136 meter mirror sub-assembly connector.
    2. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [06/2020 - ]

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Refer to DTC CHECK / CLEAR [06/2020 - ]

      Body Electrical > Combination Meter > Trouble Codes 

      HINT: 

      • If DTC B1321-87 is output from the meter / gauge system and is not output from the navigation system and audio and visual system or headup display system, it can be suspected that the combination meter assembly has an internal malfunction.
      • If DTC B1321-87 is output from the headup display system or meter / gauge system and is not output from the navigation system and audio and visual system, it can be suspected that the radio and display receiver assembly has an internal malfunction.

      Result

      Result Proceed to
      DTC B1321-87 is output. A
      DTC B1321-87 is not output. B

    Result: 

    B 

    REPLACE METER MIRROR SUB-ASSEMBLY. Refer to  REMOVAL [06/2020 - 12/2021]  , or refer to  REMOVAL [12/2021 - 10/2022] 

    Result: 

    A 

    See step  4

  4. CHECK CAN WIRE 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the combination meter assembly connector.
      GTY974995Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Combination Meter Assembly)
      *b DLC3
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G18-27 (MSCH) - G18-10 (MSCL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      G18-27 (MSCH) - G114-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      G18-10 (MSCL) - G114-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      G18-27 (MSCH) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      G18-10 (MSCL) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [06/2020 - 10/2022] 

    Result: 

    NG 

    See step  5

  5. CHECK CAN WIRE 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the radio and display receiver assembly connector.
      GTY976781Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Radio and Display Receiver Assembly)
      *b DLC3
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G2-5 (CNH1) - G2-6 (CNL1) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      G2-5 (CNH1) - G114-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      G2-6 (CNL1) - G114-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      G2-5 (CNH1) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      G2-6 (CNL1) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [06/2020 - 10/2022] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR 

  6. CHECK CAN WIRE 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the combination meter assembly connector.
      GTY975226Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Combination Meter Assembly)
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G18-27 (MSCH) - G18-10 (MSCL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [06/2020 - 10/2022] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR 

  7. CHECK FOR DTC 
    1. Check if meter/gauge system DTCs are output.

      Refer to DTC CHECK / CLEAR [06/2020 - ]

      Body Electrical > Combination Meter > Trouble Codes 

    2. Check if audio and visual system*1 or navigation system*2 DTCs are output.
      1. *1: w/ Audio and Visual System
      2. *2: w/ Navigation System

      w/ Audio and Visual System: Refer to DTC CHECK / CLEAR [06/2020 - 10/2022]

      w/ Navigaiton System: Refer to DTC CHECK / CLEAR [06/2020 - 10/2022]

      Body Electrical > Navigation System > Trouble Codes 

    3. Check the DTCs and output pattern according to the following table.
      Pattern DTC Output GTS Display Name
      Combination Meter Navigation System
      B1321-87 B1324
      Pattern 1 ◦ ◦
      Pattern 2 ◦ -

      ◦: DTC is output.

      -: DTC is not output

      Result

      Result Proceed to
      Pattern 1 A
      Pattern 2 B

    Result: 

    B 

    See step  10

    Result: 

    A 

    See step  8

  8. CHECK CAN WIRE 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the combination meter assembly connector.
      GTY974995Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Combination Meter Assembly)
      *b DLC3
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G18-27 (MSCH) - G18-10 (MSCL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      G18-27 (MSCH) - G114-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      G18-10 (MSCL) - G114-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      G18-27 (MSCH) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      G18-10 (MSCL) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [06/2020 - 10/2022] 

    Result: 

    NG 

    See step  9

  9. CHECK CAN WIRE 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the radio and display receiver assembly connector.
      GTY976781Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Radio and Display Receiver Assembly)
      *b DLC3
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G2-5 (CNH1) - G2-6 (CNL1) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      G2-5 (CNH1) - G114-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      G2-6 (CNL1) - G114-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      G2-5 (CNH1) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      G2-6 (CNL1) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [06/2020 - 10/2022] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR 

  10. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY 
    1. Disconnect the combination meter assembly connector.
      GTY975226Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Combination Meter Assembly)
    2. Using an oscilloscope, check the waveform.

      OK

      Tester Connection Condition Tool Setting Specified Condition
      G18-27 (MSCH) - G18-10 (MSCL) Ignition switch ON 1 V/DIV., 100 μs./DIV. Pulse generation

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [06/2020 - 10/2022] 

    Result: 

    NG 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [06/2020 - 10/2022] 

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