TORQUE VECTORING DIFFERENTIAL SYSTEM, Diagnostic DTC:C2A0D

DTC Code DTC Name
C2A0D TVD Relay SW Circuit

DESCRIPTION

When the engine switch is turned on (IG), the TVD relay is turned on/off for a period of 3 seconds as part of the initial check. This DTC is stored when a malfunction of the TVD relay SW circuit is detected.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate
C2A0D TVD Relay SW Circuit

Diagnosis Condition:


  • IG power source voltage is 10 V or more.

Abnormal condition (1):


  • PIG voltage is equal to or lower than (IG voltage -1.5 V) when the TVD relay is on.

Abnormal condition (2):


    When all of the following conditions are met:

  • TVD relay is off.

  • IG power source voltage is 10 V or more and below 18.5 V.

  • PIG voltage is equal to or lower than (IG voltage -1.5 V).

Malfunction Time (1):


  • 1.25 seconds or more

Malfunction Time (2):


  • 2 seconds or more

Trip logic:


  • 1 trip detection logic

  • Torque vectoring differential ECU assembly

  • TVD relay

  • Wire harness or connector

  • Master Warning Light: Comes on

  • Multi-information Display Error Message: Comes on
DTC Detection Conditions
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition IG power source voltage is 10 V and more ○ ○
Malfunction Status PIG voltage is equal to or lower than (IG voltage -1.5 V) when the TVD relay is on ○ -

    When all of the following conditions are met:

  • TVD relay is off

  • IG power source voltage is 10 V or more and below 18.5 V

  • PIG voltage is equal to or lower than (IG voltage -1.5 V)

 - ○
Detection Time 1.25 seconds or more 2 seconds or more
Number of Trips 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

WIRING DIAGRAM

Refer to the wiring diagram for DTC C2A03.

Click here

CAUTION / NOTICE / HINT

Tech Tips

If the torque vectoring differential ECU assembly has been replaced, perform "All Learning".

Click here

PROCEDURE


  1. INSPECT TVD RELAY


    1. B002DS0C01
      *A for LHD
      *1 No. 1 Engine Room Relay Block
      *2 TVD Relay
      B002DLXC01
      *A for RHD
      *1 No. 1 Engine Room Relay Block
      *2 TVD Relay

      Remove the TVD relay from the No. 1 engine room relay block.

    2. B002D45C17
      *1 TVD Relay

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 - 5 Battery voltage not applied between terminals 1 and 2 10 kΩ or higher
      3 - 5 Battery voltage applied between terminals 1 and 2 Below 1 Ω

    3. Install the TVD relay.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE TVD RELAY

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)


    1. B002DS0C01
      *A for LHD
      *1 No. 1 Engine Room Relay Block
      *2 TVD Relay
      B002DLXC01
      *A for RHD
      *1 No. 1 Engine Room Relay Block
      *2 TVD Relay

      Remove the TVD relay from the No. 1 engine room relay block.

    2. Turn the engine switch on (IG).

    3. B002ECCC01
      *A for LHD
      *1 No. 1 Engine Room Relay Block
      *2 TVD Relay Holder
      B002DK0C01
      *A for RHD
      *1 No. 1 Engine Room Relay Block
      *2 TVD Relay Holder

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      1 (TVD relay holder) - Body ground Engine switch on (IG) 10 to 14 V
      3 (TVD relay holder) - Body ground Engine switch on (IG) 10 to 14 V

    4. Turn the engine switch off.

    5. Install the TVD relay.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE POWER SOURCE CIRCUIT

    OK

  3. CHECK HARNESS AND CONNECTOR (TVD RELAY - TORQUE VECTORING DIFFERENTIAL ECU ASSEMBLY)


    1. B002DS0C01
      *A for LHD
      *1 No. 1 Engine Room Relay Block
      *2 TVD Relay
      B002DLXC01
      *A for RHD
      *1 No. 1 Engine Room Relay Block
      *2 TVD Relay

      Remove the TVD relay from the No. 1 engine room relay block.

    2. Disconnect the U42 and U43 torque vectoring differential ECU assembly connectors.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      5 (TVD relay holder) - U42-1 (PIG) Always Below 1 Ω
      5 (TVD relay holder) - U42-4 (PIG1) Always Below 1 Ω
      2 (TVD relay holder) - U43-7 (PIGR) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      5 (TVD relay holder) - 2 (TVD relay holder) Always 10 kΩ or higher
      5 (TVD relay holder) - Body ground Always 10 kΩ or higher
      2 (TVD relay holder) - Body ground Always 10 kΩ or higher

    4. Reconnect the U42 and U43 torque vectoring differential ECU assembly connectors.

    5. Install the TVD relay.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TORQUE VECTORING DIFFERENTIAL ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR