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

A01KBSYE01

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 SD)
      for Navigation Receiver Type (for HDD)
      for Radio Receiver Type

    for Navigation Receiver Type (for SD)

    CHECK NAVIGATION RECEIVER ASSEMBLY Click here

    for Navigation Receiver Type (for HDD)

    CHECK NAVIGATION ECU SUB-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

    A01KD46C03
    *a

    Front view of wire harness connector

    (to Combination Meter Assembly)

    • *1: w/ Rain Sensor

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

    • *3: w/ Entry and Start System

    • *4: except Manual Transaxle

    • *5: Engine Type Diesel

    • *6: Engine Type Gasoline

    • *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. 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

    A01KD46C03
    *a

    Front view of wire harness connector

    (to Combination Meter Assembly)

    Note

    For vehicle except 11 speakers, proceed to next step.


    • *1: for Radio and Display Type

    • *2: for Navigation Receiver Type (for SD)

    • *3: w/ Rain Sensor

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

    • *5: w/ Entry and Start System

    • *6: except Manual Transaxle

    • *7: Engine Type Diesel

    • *8: Engine Type Gasoline


    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. 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

    A01KD46C03
    *a

    Front view of wire harness connector

    (to Combination Meter Assembly)

    Note

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


    • *1: for Radio Receiver Type

    • *2: for Navigation Receiver Type (for HDD)

    • *3: for Radio and Display Type

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

    • *5: w/ Entry and Start System

    • *6: except Manual Transaxle

    • *7: Engine Type Diesel

    • *8: Engine Type Gasoline

    • *9: for Navigation Receiver Type (for SD)


    1. Disconnect the G16 combination meter assembly connector.

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

    3. Disconnect the G139 navigation ECU sub-assembly connector.*2

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

    5. Disconnect the G139 navigation receiver assembly connector.*9

    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 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

    A01KD46C03
    *a

    Front view of wire harness connector

    (to Combination Meter 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 (for HDD)

    • *3: for Radio and Display Type

    • *4: w/ Rain Sensor

    • *5: w/ Entry and Start System

    • *6: except Manual Transaxle

    • *7: Engine Type Diesel

    • *8: Engine Type Gasoline

    • *9: for Navigation Receiver Type (for SD)


    1. Disconnect the G16 combination meter assembly connector.

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

    3. Disconnect the G139 navigation ECU sub-assembly connector.*2

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

    5. Disconnect the G139 navigation receiver assembly connector.*9

    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 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)

    A01KD46C03
    *a

    Front view of wire harness connector

    (to Combination Meter Assembly)

    Note

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


    • *1: for Radio Receiver Type

    • *2: for Navigation Receiver Type (for HDD)

    • *3: for Radio and Display Type

    • *4: w/ Rain Sensor

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

    • *6: except Manual Transaxle

    • *7: Engine Type Diesel

    • *8: Engine Type Gasoline

    • *9: for Navigation Receiver Type (for SD)


    1. Disconnect the G16 combination meter assembly connector.

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

    3. Disconnect the G139 navigation ECU sub-assembly connector.*2

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

    5. Disconnect the G139 navigation receiver assembly connector.*9

    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 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

    A01KD46C03
    *a

    Front view of wire harness connector

    (to Combination Meter Assembly)

    Note

    For vehicle manual transaxle, proceed to next step.


    • *1: for Radio Receiver Type

    • *2: for Navigation Receiver Type (for HDD)

    • *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: Engine Type Diesel

    • *8: Engine Type Gasoline

    • *9: for Navigation Receiver Type (for SD)


    1. Disconnect the G16 combination meter assembly connector.

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

    3. Disconnect the G139 navigation ECU sub-assembly connector.*2

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

    5. Disconnect the G139 navigation receiver assembly connector.*9

    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 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

  8. CHECK ECM

    A01KD46C03
    *a

    Front view of wire harness connector

    (to Combination Meter Assembly)

    • *1: for Radio Receiver Type

    • *2: for Navigation Receiver Type (for HDD)

    • *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: except Manual Transaxle

    • *8: for Navigation Receiver Type (for SD)


    1. Disconnect the G16 combination meter assembly connector.

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

    3. Disconnect the G139 navigation ECU sub-assembly connector.*2

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

    5. Disconnect the G139 navigation receiver assembly connector.*8

    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 B79 TCM connector.*7

    10. 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

  9. CHECK COMBINATION METER ASSEMBLY (OUTPUT VOLTAGE)

    A01KBRSC02
    *A w/o VSC
    *B w/ VSC
    *a

    Front view of wire harness connector

    (to Brake Actuator Assembly [Skid Control ECU])

    • *1: w/o VSC

    • *2: w/VSC


    1. Disconnect the A63*1 or A64*2 brake actuator assembly (skid control ECU) connector.

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

      Standard Voltage
      w/o VSC
      Tester Connection Switch Condition Specified Condition
      A63-22 (SP1) - Body ground Ignition switch ON 11 to 14 V
      w/ VSC
      Tester Connection Switch Condition Specified Condition
      A64-11 (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)

    A01KD5TC06
    *a

    Component with harness connected

    (Combination Meter Assembly)

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

      Click here

    2. 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 (w/o VSC)
      NG (w/ VSC)

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG (w/o VSC)

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here

    NG (w/ VSC)

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here

  11. CHECK NAVIGATION RECEIVER ASSEMBLY

    A01KD46C03
    *a

    Front view of wire harness connector

    (to Combination Meter Assembly)

    • *1: w/ Rain Sensor

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

    • *3: w/ Entry and Start System

    • *4: except Manual Transaxle

    • *5: Engine Type Diesel

    • *6: Engine Type Gasoline


    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. 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: except Manual Transaxle

    • *5: Engine Type Diesel

    • *6: Engine Type Gasoline

    • *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 (for SD)

    • *3: w/ Rain Sensor

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

    • *5: w/ Entry and Start System

    • *6: except Manual Transaxle

    • *7: Engine Type Diesel

    • *8: Engine Type Gasoline


    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 (for HDD)

    • *3: for Radio and Display Type

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

    • *5: w/ Entry and Start System

    • *6: except Manual Transaxle

    • *7: Engine Type Diesel

    • *8: Engine Type Gasoline

    • *9: for Navigation Receiver Type (for SD)


    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 ECU sub-assembly connector.*2

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

    6. Disconnect the G139 navigation receiver connector.*9

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

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

    9. Disconnect the B79 TCM connector.*6

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

    11. 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 (for HDD)

    • *3: for Radio and Display Type

    • *4: w/ Rain Sensor

    • *5: w/ Entry and Start System

    • *6: except Manual Transaxle

    • *7: Engine Type Diesel

    • *8: Engine Type Gasoline

    • *9: for Navigation Receiver Type (for SD)


    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 ECU sub-assembly connector.*2

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

    6. Disconnect the G139 navigation receiver assembly connector.*9

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

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

    9. Disconnect the B79 TCM connector.*6

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

    11. 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 (for HDD)

    • *3: for Radio and Display Type

    • *4: w/ Rain Sensor

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

    • *6: except Manual Transaxle

    • *7: Engine Type Diesel

    • *8: Engine Type Gasoline

    • *9: for Navigation Receiver Type (for SD)


    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 ECU sub-assembly connector.*2

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

    6. Disconnect the G139 navigation receiver assembly connector.*9

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

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

    9. Disconnect the B79 TCM connector.*6

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

    11. 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 - CERTIFICATION ECU [SMART KEY ECU ASSEMBLY])


    • *1: for Radio Receiver Type

    • *2: for Navigation Receiver Type (for HDD)

    • *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: Engine Type Diesel

    • *8: Engine Type Gasoline

    • *9: for Navigation Receiver Type (for SD)


    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 ECU sub-assembly connector.*2

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

    6. Disconnect the G139 navigation receiver assembly connector.*9

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

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

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

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

    11. 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 (U660F)
      OK (U760E)
      OK (U760F)
      OK (K111)
      OK (K111F)
      NG

    OK (U660F)

    REPLACE TCM Click here

    OK (U760E)

    REPLACE TCM Click here

    OK (U760F)

    REPLACE TCM Click here

    OK (K111)

    REPLACE TCM Click here

    OK (K111F)

    REPLACE TCM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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


    • *1: Engine Type Diesel

    • *2: Engine Type Gasoline

    • *3: for Radio Receiver Type

    • *4: for Navigation Receiver Type (for HDD)

    • *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: except Manual Transaxle

    • *10: for Navigation Receiver Type (for SD)


    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 ECU sub-assembly connector.*4

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

    6. Disconnect the G139 navigation receiver assembly connector.*10

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

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

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

    10. Disconnect the B79 TCM connector.*9

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

      Standard Resistance
      Engine Type Diesel
      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
      Result
      Proceed to
      OK (1AD-FTV)
      OK (2AD-FHV)
      OK (2AD-FTV)
      OK (2AR-FE)
      OK (3ZR-FAE)
      OK (3ZR-FE)
      NG

    OK (1AD-FTV)

    REPLACE ECM Click here

    OK (2AD-FHV)

    REPLACE ECM Click here

    OK (2AD-FTV)

    REPLACE ECM Click here

    OK (2AR-FE)

    REPLACE ECM Click here

    OK (3ZR-FAE)

    REPLACE ECM Click here

    OK (3ZR-FE)

    REPLACE ECM 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 A63*1 or A64*2 brake actuator assembly (skid control ECU) connector.

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

      Standard Resistance
      w/o VSC
      Tester Connection Condition Specified Condition
      G16-5 (SI) - A63-22 (SP1) Always Below 1 Ω
      G16-5 (SI) or A63-22 (SP1) - Body ground Always 10 kΩ or higher
      w/ VSC
      Tester Connection Condition Specified Condition
      G16-5 (SI) - A64-11 (SP1) Always Below 1 Ω
      G16-5 (SI) or A64-11 (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 NAVIGATION ECU SUB-ASSEMBLY

    A01KD46C03
    *a

    Front view of wire harness connector

    (to Combination Meter Assembly)

    • *1: w/ Rain Sensor

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

    • *3: w/ Entry and Start System

    • *4: except Manual Transaxle

    • *5: Engine Type Diesel

    • *6: Engine Type Gasoline


    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. 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

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

  21. 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: except Manual Transaxle

    • *5: Engine Type Diesel

    • *6: Engine Type Gasoline


    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

  22. CHECK RADIO RECEIVER ASSEMBLY

    A01KD46C03
    *a

    Front view of wire harness connector

    (to Combination Meter Assembly)

    • *1: w/ Rain Sensor

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

    • *3: w/ Entry and Start System

    • *4: except Manual Transaxle

    • *5: Engine Type Diesel

    • *6: Engine Type Gasoline


    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. 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

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

  23. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - NAVIGATION ECU SUB-ASSEMBLY)


    • *1: w/ Rain Sensor

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

    • *3: w/ Entry and Start System

    • *4: except Manual Transaxle

    • *5: Engine Type Diesel

    • *6: Engine Type Gasoline


    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 ECU SUB-ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  24. 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: except Manual Transaxle

    • *5: Engine Type Diesel

    • *6: Engine Type Gasoline


    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