METER / GAUGE SYSTEM Speed Signal Circuit

DESCRIPTION

The vehicle speed signal consists of pulses sent to the combination meter assembly from the brake actuator assembly (skid control ECU).

WIRING DIAGRAM

A01QQNKE01

CAUTION / NOTICE / HINT

Note


  • Before replacing the certification ECU (smart key ECU assembly), refer to the Service Bulletin.

  • When replacing the combination meter assembly, make sure to replace it with a new one.

PROCEDURE


  1. CHECK VEHICLE TYPE


    1. Check vehicle type.

      Result
      Proceed to
      for Radio and Display Type
      for Navigation Receiver Type
      for Radio Receiver Type

    for Navigation Receiver Type

    CHECK NAVIGATION RECEIVER ASSEMBLY Click here

    for Radio Receiver Type

    CHECK RADIO RECEIVER ASSEMBLY Click here

    for Radio and Display Type

  2. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY


    • *1: w/ Rain Sensor

    • *2: w/ Automatic Headlight Beam Level Control System

    • *3: w/ Entry and Start System

    • *4: for U660F

    • *5: for AD Series Engine

    • *6: except AD Series Engine

    • *7: for 11 Speakers


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the G85 windshield wiper relay assembly connector.*1

    3. Disconnect the A67 headlight leveling ECU assembly connector.*2

    4. Disconnect the G84 certification ECU (smart key ECU assembly) connector.*3

    5. Disconnect the B79 TCM connector.*4

    6. Disconnect the A61*5 or A62*6 ECM connector.

    7. Disconnect the M32 stereo component amplifier assembly connector.*7

    8. A01QUFAC03
      *a

      Front view of wire harness connector

      (to Combination Meter Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G16-6 (+S) - Body ground Ignition switch ON 4.5 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - RADIO AND DISPLAY RECEIVER ASSEMBLY) Click here

    OK

  3. CHECK STEREO COMPONENT AMPLIFIER ASSEMBLY

    Note

    For vehicle except 11 speakers, proceed to next step.


    • *1: for Radio and Display Type

    • *2: for Navigation Receiver Type

    • *3: w/ Rain Sensor

    • *4: w/ Automatic Headlight Beam Level Control System

    • *5: w/ Entry and Start System

    • *6: for U660F

    • *7: for AD Series Engine

    • *8: except AD Series Engine


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the G143 radio and display receiver assembly connector.*1

    3. Disconnect the G139 navigation receiver assembly connector.*2

    4. Disconnect the G85 windshield wiper relay assembly connector.*3

    5. Disconnect the A67 headlight leveling ECU assembly connector.*4

    6. Disconnect the G84 certification ECU (smart key ECU assembly) connector.*5

    7. Disconnect the B79 TCM connector.*6

    8. Disconnect the A61*7 or A62*8 ECM connector.

    9. A01QUFAC03
      *a

      Front view of wire harness connector

      (to Combination Meter Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G16-6 (+S) - Body ground Ignition switch ON 4.5 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY) Click here

    OK

  4. CHECK WINDSHIELD WIPER RELAY ASSEMBLY

    Note

    For vehicle without a rain sensor, proceed to next step.


    • *1: for Radio Receiver Type

    • *2: for Navigation Receiver Type

    • *3: for Radio and Display Type

    • *4: w/ Automatic Headlight Beam Level Control System

    • *5: w/ Entry and Start System

    • *6: for U660F

    • *7: for AD Series Engine

    • *8: except AD Series Engine


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the G48 radio receiver assembly connector.*1

    3. Disconnect the G139 navigation receiver assembly connector.*2

    4. Disconnect the G143 radio and display receiver assembly connector.*3

    5. Disconnect the A67 headlight leveling ECU assembly connector.*4

    6. Disconnect the G84 certification ECU (smart key ECU assembly) connector.*5

    7. Disconnect the B79 TCM connector.*6

    8. Disconnect the A61*7 or A62*8 ECM connector.

    9. A01QUFAC03
      *a

      Front view of wire harness connector

      (to Combination Meter Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G16-6 (+S) - Body ground Ignition switch ON 4.5 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - WINDSHIELD WIPER RELAY ASSEMBLY) Click here

    OK

  5. CHECK HEADLIGHT LEVELING ECU ASSEMBLY

    Note

    For vehicle without an automatic headlight beam level control system, proceed to next step.


    • *1: for Radio Receiver Type

    • *2: for Navigation Receiver Type

    • *3: for Radio and Display Type

    • *4: w/ Rain Sensor

    • *5: w/ Entry and Start System

    • *6: for U660F

    • *7: for AD Series Engine

    • *8: except AD Series Engine


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the G48 radio receiver assembly connector.*1

    3. Disconnect the G139 navigation receiver assembly connector.*2

    4. Disconnect the G143 radio and display receiver assembly connector.*3

    5. Disconnect the G85 windshield wiper relay assembly connector.*4

    6. Disconnect the G84 certification ECU (smart key ECU assembly) connector.*5

    7. Disconnect the B79 TCM connector.*6

    8. Disconnect the A61*7 or A62*8 ECM connector.

    9. A01QUFAC03
      *a

      Front view of wire harness connector

      (to Combination Meter Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G16-6 (+S) - Body ground Ignition switch ON 4.5 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - HEADLIGHT LEVELING ECU) Click here

    OK

  6. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    Note

    For vehicle without an entry and start system, proceed to next step.


    • *1: for Radio Receiver Type

    • *2: for Navigation Receiver Type

    • *3: for Radio and Display Type

    • *4: w/ Rain Sensor

    • *5: w/ Automatic Headlight Beam Level Control System

    • *6: for U660F

    • *7: for AD Series Engine

    • *8: except AD Series Engine


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the G48 radio receiver assembly connector.*1

    3. Disconnect the G139 navigation receiver assembly connector.*2

    4. Disconnect the G143 radio and display receiver assembly connector.*3

    5. Disconnect the G85 windshield wiper relay assembly connector.*4

    6. Disconnect the A67 headlight leveling ECU assembly connector.*5

    7. Disconnect the B79 TCM connector.*6

    8. Disconnect the A61*7 or A62*8 ECM connector.

    9. A01QUFAC03
      *a

      Front view of wire harness connector

      (to Combination Meter Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G16-6 (+S) - Body ground Ignition switch ON 4.5 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - CERTIFICATION ECU [SMART KEY ECU ASSEMBLY]) Click here

    OK

  7. CHECK TCM

    Note

    For vehicle except U660F, proceed to next step.


    • *1: for Radio Receiver Type

    • *2: for Navigation Receiver Type

    • *3: for Radio and Display Type

    • *4: w/ Rain Sensor

    • *5: w/ Automatic Headlight Beam Level Control System

    • *6: w/ Entry and Start System

    • *7: for AD Series Engine

    • *8: except AD Series Engine


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the G48 radio receiver assembly connector.*1

    3. Disconnect the G139 navigation receiver assembly connector.*2

    4. Disconnect the G143 radio and display receiver assembly connector.*3

    5. Disconnect the G85 windshield wiper relay assembly connector.*4

    6. Disconnect the A67 headlight leveling ECU assembly connector.*5

    7. Disconnect the G84 certification ECU (smart key ECU assembly) connector.*6

    8. Disconnect the A61*7 or A62*8 ECM connector.

    9. A01QUFAC03
      *a

      Front view of wire harness connector

      (to Combination Meter Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G16-6 (+S) - Body ground Ignition switch ON 4.5 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - TCM) Click here

    OK

  8. CHECK ECM


    • *1: for Radio Receiver Type

    • *2: for Navigation Receiver Type

    • *3: for Radio and Display Type

    • *4: w/ Rain Sensor

    • *5: w/ Automatic Headlight Beam Level Control System

    • *6: w/ Entry and Start System

    • *7: for U660F


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the G48 radio receiver assembly connector.*1

    3. Disconnect the G139 navigation receiver assembly connector.*2

    4. Disconnect the G143 radio and display receiver assembly connector.*3

    5. Disconnect the G85 windshield wiper relay assembly connector.*4

    6. Disconnect the A67 headlight leveling ECU assembly connector.*5

    7. Disconnect the G84 certification ECU (smart key ECU assembly) connector.*6

    8. Disconnect the B79 TCM connector.*7

    9. A01QUFAC03
      *a

      Front view of wire harness connector

      (to Combination Meter Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G16-6 (+S) - Body ground Ignition switch ON 4.5 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM) Click here

    OK

  9. CHECK COMBINATION METER ASSEMBLY (OUTPUT VOLTAGE)


    1. Disconnect the A80 brake actuator assembly (skid control ECU) connector.

    2. A01QPOVC33
      *a

      Front view of wire harness connector

      (to Skid Control ECU [Brake Actuator Assembly])

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A80-14 (SP1) - Body ground Ignition switch ON 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BRAKE ACTUATOR ASSEMBLY [SKID CONTROL ECU]) Click here

    OK

  10. CHECK COMBINATION METER ASSEMBLY (SPEED SIGNAL)


    1. Remove the combination meter assembly with the connector(s) still connected.

      Click here

    2. A01QT5JC06
      *a

      Component with harness connected

      (Combination Meter Assembly)

      Connect an oscilloscope to terminal G16-5 (SI) and body ground.

    3. Check the signal waveform according to the condition(s) in the table below.

      Measurement Condition
      Item Condition
      Tester Connection G16-5 (SI) - Body ground
      Tool Setting 5 V/DIV., 20 ms./DIV.
      Vehicle Condition Driving at approximately 20 km/h (12 mph)

      Tech Tips

      When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by A in the illustration narrows.

      OK
      The waveform displayed is as shown in the illustration.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here

  11. CHECK NAVIGATION RECEIVER ASSEMBLY


    • *1: w/ Rain Sensor

    • *2: w/ Automatic Headlight Beam Level Control System

    • *3: w/ Entry and Start System

    • *4: for U660F

    • *5: for AD Series Engine

    • *6: except AD Series Engine


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the G85 windshield wiper relay assembly connector.*1

    3. Disconnect the A67 headlight leveling ECU assembly connector.*2

    4. Disconnect the G84 certification ECU (smart key ECU assembly) connector.*3

    5. Disconnect the B79 TCM connector.*4

    6. Disconnect the A61*5 or A62*6 ECM connector.

    7. A01QUFAC03
      *a

      Front view of wire harness connector

      (to Combination Meter Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G16-6 (+S) - Body ground Ignition switch ON 4.5 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    GO TO STEP 3 Click here

    NG

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - NAVIGATION RECEIVER ASSEMBLY) Click here

  12. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - RADIO AND DISPLAY RECEIVER ASSEMBLY)


    • *1: w/ Rain Sensor

    • *2: w/ Automatic Headlight Beam Level Control System

    • *3: w/ Entry and Start System

    • *4: for U660F

    • *5: for AD Series Engine

    • *6: except AD Series Engine

    • *7: for 11 Speakers


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the G143 radio and display receiver assembly connector.

    3. Disconnect the G85 windshield wiper relay assembly connector.*1

    4. Disconnect the A67 headlight leveling ECU assembly connector.*2

    5. Disconnect the G84 certification ECU (smart key ECU assembly) connector.*3

    6. Disconnect the B79 TCM connector.*4

    7. Disconnect the A61*5 or A62*6 ECM connector.

    8. Disconnect the M32 stereo component amplifier assembly connector.*7

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G16-6 (+S) - G143-17 (SPD) Always Below 1 Ω
      G16-6 (+S) or G143-17 (SPD) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  13. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY)


    • *1: for Radio and Display Type

    • *2: for Navigation Receiver Type

    • *3: w/ Rain Sensor

    • *4: w/ Automatic Headlight Beam Level Control System

    • *5: w/ Entry and Start System

    • *6: for U660F

    • *7: for AD Series Engine

    • *8: except AD Series Engine


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the M32 stereo component amplifier assembly connector.

    3. Disconnect the G143 radio and display receiver assembly connector.*1

    4. Disconnect the G139 navigation receiver assembly connector.*2

    5. Disconnect the G85 windshield wiper relay assembly connector.*3

    6. Disconnect the A67 headlight leveling ECU assembly connector.*4

    7. Disconnect the G84 certification ECU (smart key ECU assembly) connector.*5

    8. Disconnect the B79 TCM connector.*6

    9. Disconnect the A61*7 or A62*8 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G16-6 (+S) - M32-11 (SPD) Always Below 1 Ω
      G16-6 (+S) or M32-11 (SPD) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  14. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - WINDSHIELD WIPER RELAY ASSEMBLY)


    • *1: for Radio Receiver Type

    • *2: for Navigation Receiver Type

    • *3: for Radio and Display Type

    • *4: w/ Automatic Headlight Beam Level Control System

    • *5: w/ Entry and Start System

    • *6: for U660F

    • *7: for AD Series Engine

    • *8: except AD Series Engine


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the G85 windshield wiper relay assembly connector.

    3. Disconnect the G48 radio receiver assembly connector.*1

    4. Disconnect the G139 navigation receiver assembly connector.*2

    5. Disconnect the G143 radio and display receiver assembly connector.*3

    6. Disconnect the A67 headlight leveling ECU assembly connector.*4

    7. Disconnect the G84 certification ECU (smart key ECU assembly) connector.*5

    8. Disconnect the B79 TCM connector.*6

    9. Disconnect the A61*7 or A62*8 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G16-6 (+S) - G85-24 (SPD) Always Below 1 Ω
      G16-6 (+S) or G85-24 (SPD) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE WINDSHIELD WIPER RELAY ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  15. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - HEADLIGHT LEVELING ECU)


    • *1: for Radio Receiver Type

    • *2: for Navigation Receiver Type

    • *3: for Radio and Display Type

    • *4: w/ Rain Sensor

    • *5: w/ Entry and Start System

    • *6: for U660F

    • *7: for AD Series Engine

    • *8: except AD Series Engine


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the A67 headlight leveling ECU assembly connector.

    3. Disconnect the G48 radio receiver assembly connector.*1

    4. Disconnect the G139 navigation receiver assembly connector.*2

    5. Disconnect the G143 radio and display receiver assembly connector.*3

    6. Disconnect the G85 windshield wiper relay assembly connector.*4

    7. Disconnect the G84 certification ECU (smart key ECU assembly) connector.*5

    8. Disconnect the B79 TCM connector.*6

    9. Disconnect the A61*7 or A62*8 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G16-6 (+S) - A67-16 (SPDR) Always Below 1 Ω
      G16-6 (+S) or A67-16 (SPDR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  16. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - CERTIFICATION ECU [SMART KEY ECU ASSEMBLY])


    • *1: for Radio Receiver Type

    • *2: for Navigation Receiver Type

    • *3: for Radio and Display Type

    • *4: w/ Rain Sensor

    • *5: w/ Automatic Headlight Beam Level Control System

    • *6: for U660F

    • *7: for AD Series Engine

    • *8: except AD Series Engine


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the G84 certification ECU (smart key ECU assembly) connector.

    3. Disconnect the G48 radio receiver assembly connector.*1

    4. Disconnect the G139 navigation receiver assembly connector.*2

    5. Disconnect the G143 radio and display receiver assembly connector.*3

    6. Disconnect the G85 windshield wiper relay assembly connector.*4

    7. Disconnect the A67 headlight leveling ECU assembly connector.*5

    8. Disconnect the B79 TCM connector.*6

    9. Disconnect the A61*7 or A62*8 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G16-6 (+S) - A67-16 (SPDR) Always Below 1 Ω
      G16-6 (+S) or A67-16 (SPDR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  17. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - TCM)


    • *1: for Radio Receiver Type

    • *2: for Navigation Receiver Type

    • *3: for Radio and Display Type

    • *4: w/ Rain Sensor

    • *5: w/ Automatic Headlight Beam Level Control System

    • *6: w/ Entry and Start System

    • *7: for AD Series Engine

    • *8: except AD Series Engine


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the B79 TCM connector.

    3. Disconnect the G48 radio receiver assembly connector.*1

    4. Disconnect the G139 navigation receiver assembly connector.*2

    5. Disconnect the G143 radio and display receiver assembly connector.*3

    6. Disconnect the G85 windshield wiper relay assembly connector.*4

    7. Disconnect the A67 headlight leveling ECU assembly connector.*5

    8. Disconnect the G84 certification ECU (smart key ECU assembly) connector.*6

    9. Disconnect the A61*7 or A62*8 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G16-6 (+S) - B79-3 (SPD) Always Below 1 Ω
      G16-6 (+S) or B79-3 (SPD) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TCM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  18. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM)


    • *1: for AD Series Engine

    • *2: except AD Series Engine

    • *3: for Radio Receiver Type

    • *4: for Navigation Receiver Type

    • *5: for Radio and Display Type

    • *6: w/ Rain Sensor

    • *7: w/ Automatic Headlight Beam Level Control System

    • *8: w/ Entry and Start System

    • *9: for U660F


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the A61*1 or A62*2 ECM connector.

    3. Disconnect the G48 radio receiver assembly connector.*3

    4. Disconnect the G139 navigation receiver assembly connector.*4

    5. Disconnect the G143 radio and display receiver assembly connector.*5

    6. Disconnect the G85 windshield wiper relay assembly connector.*6

    7. Disconnect the A67 headlight leveling ECU assembly connector.*7

    8. Disconnect the G84 certification ECU (smart key ECU assembly) connector.*8

    9. Disconnect the B79 TCM connector.*9

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

      Standard Resistance
      for AD Series Engine
      Tester Connection Condition Specified Condition
      G16-6 (+S) - A61-14 (SPD) Always Below 1 Ω
      G16-6 (+S) or A61-14 (SPD) - Body ground Always 10 kΩ or higher
      2AR-FE
      Tester Connection Condition Specified Condition
      G16-6 (+S) - A62-57 (SPD) Always Below 1 Ω
      G16-6 (+S) or A62-57 (SPD) - Body ground Always 10 kΩ or higher
      3ZR-FE, 3ZR-FAE
      Tester Connection Condition Specified Condition
      G16-6 (+S) - A62-44 (SPD) Always Below 1 Ω
      G16-6 (+S) or A62-44 (SPD) - Body ground Always 10 kΩ or higher
      2WW
      Tester Connection Condition Specified Condition
      G16-6 (+S) - A62-57 (SPD) Always Below 1 Ω
      G16-6 (+S) or A62-57 (SPD) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM for 2AD-FHV: Click here for 2AD-FTV: Click here for 2AR-FE: Click here for 2WW: Click here for 3ZR-FAE: Click here for 3ZR-FE: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  19. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BRAKE ACTUATOR ASSEMBLY [SKID CONTROL ECU])


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the A80 brake actuator assembly (skid control ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G16-5 (SI) - A80-14 (SP1) Always Below 1 Ω
      G16-5 (SI) or A80-14 (SP1) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  20. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - NAVIGATION RECEIVER ASSEMBLY)


    • *1: w/ Rain Sensor

    • *2: w/ Automatic Headlight Beam Level Control System

    • *3: w/ Entry and Start System

    • *4: for U660F

    • *5: for AD Series Engine

    • *6: except AD Series Engine


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the G139 navigation receiver assembly connector.

    3. Disconnect the G85 windshield wiper relay assembly connector.*1

    4. Disconnect the A67 headlight leveling ECU assembly connector.*2

    5. Disconnect the G84 certification ECU (smart key ECU assembly) connector.*3

    6. Disconnect the B79 TCM connector.*4

    7. Disconnect the A61*5 or A62*6 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G16-6 (+S) - G139-17 (SPD) Always Below 1 Ω
      G16-6 (+S) or G139-17 (SPD) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  21. CHECK RADIO RECEIVER ASSEMBLY


    • *1: w/ Rain Sensor

    • *2: w/ Automatic Headlight Beam Level Control System

    • *3: w/ Entry and Start System

    • *4: for U660F

    • *5: for AD Series Engine

    • *6: except AD Series Engine


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the G85 windshield wiper relay assembly connector.*1

    3. Disconnect the A67 headlight leveling ECU assembly connector.*2

    4. Disconnect the G84 certification ECU (smart key ECU assembly) connector.*3

    5. Disconnect the B79 TCM connector.*4

    6. Disconnect the A61*5 or A62*6 ECM connector.

    7. A01QUFAC03
      *a

      Front view of wire harness connector

      (to Combination Meter Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G16-6 (+S) - Body ground Ignition switch ON 4.5 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    GO TO STEP 4 Click here

    NG

  22. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - RADIO RECEIVER ASSEMBLY)


    • *1: w/ Rain Sensor

    • *2: w/ Automatic Headlight Beam Level Control System

    • *3: w/ Entry and Start System

    • *4: for U660F

    • *5: for AD Series Engine

    • *6: except AD Series Engine


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the G48 radio receiver assembly connector.

    3. Disconnect the G85 windshield wiper relay assembly connector.*1

    4. Disconnect the A67 headlight leveling ECU assembly connector.*2

    5. Disconnect the G84 certification ECU (smart key ECU assembly) connector.*3

    6. Disconnect the B79 TCM connector.*4

    7. Disconnect the A61*5 or A62*6 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G16-6 (+S) - G48-17 (SPD) Always Below 1 Ω
      G16-6 (+S) or G48-17 (SPD) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR