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CAN COMMUNICATION SYSTEM (for RHD) Short to GND in CAN Bus Line

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DTC Code DTC Name
  Short to GND in CAN Bus Line
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DESCRIPTION

There may be a short circuit between the CAN bus lines and GND when the resistance between terminals 6 (CANH) and 4 (CG) or terminals 14 (CANL) and 4 (CG) of the DLC3 is below 200 Ω.

Symptom Trouble Area
The resistance between terminals 6 (CANH) and 4 (CG) or terminals 14 (CANL) and 4 (CG) of the DLC3 is below 200 Ω.

  • Short between CAN bus lines and GND

  • ECM

  • Hybrid vehicle control ECU

  • Skid control ECU assembly

  • Main body ECU (driver side junction block)

  • No. 1 meter ECU sub-assembly

  • Multi-media module receiver assembly

  • Air conditioning amplifier assembly

  • Headlight swivel ECU assembly

  • Center airbag sensor assembly

  • No. 1 junction connector

  • No. 2 junction connector

  • No. 3 junction connector
A01H08IE01
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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

The vehicle is equipped with an SRS (Supplemental Restraint System) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the Precaution in the SRS (Click here).

Tip:

Operating the power switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

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PROCEDURE


  1. Click here

    PRECAUTION

    Note:

    After turning the power switch off, waiting time may be required before disconnecting the cable from the auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the auxiliary battery terminal notice before proceeding with work (Click here).


  2. Click here

    DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL


    1. Disconnect the cable from the negative (-) auxiliary battery terminal before measuring the resistances of the CAN main wire and the CAN branch wire.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

      Note:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Click here).


  3. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - DLC3)


    1. A01GXEKE21

      Disconnect the L98 No. 3 junction connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L31-6 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      L31-14 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 1. Text in Illustration
      *a Front view of DLC3

  4. Click here

    CONNECT CONNECTOR


    1. Reconnect the L98 No. 3 junction connector.


  5. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR SIDE)


    1. A01GXEKE21

      Disconnect the A67 No. 1 junction connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L31-6 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      L31-14 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 2. Text in Illustration
      *a Front view of DLC3

  6. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR - ECM)


    1. A01GY1LE05

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A67-9 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      A67-20 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 3. Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 1 Junction Connector)
      *b Front view of DLC3

  7. Click here

    CONNECT CONNECTOR


    1. Reconnect the A67 No. 1 junction connector.


  8. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (ECM)


    1. A01GX8PE05

      Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A13-14 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      A13-13 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 4. Text in Illustration
      *a

      Rear view of wire harness connector

      (to ECM)
      *b Front view of DLC3

  9. Click here

    CONNECT CONNECTOR


    1. Reconnect the A13 ECM connector.


  10. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (HYBRID VEHICLE CONTROL ECU - ECM)


    1. A01GX8PE14

      Disconnect the hybrid vehicle control ECU connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A76-13 (CA3H) - L31-4 (CG) Power switch off 200 Ω or higher
      A76-14 (CA3L) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 5. Text in Illustration
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU)
      *b Front view of DLC3

  11. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (HYBRID VEHICLE CONTROL ECU - NO. 1 JUNCTION CONNECTOR)


    1. A01GX8PE15

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A76-15 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      A76-16 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 6. Text in Illustration
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU)
      *b Front view of DLC3

  12. Click here

    CONNECT CONNECTOR


    1. Reconnect the A67 No. 1 junction connector.


  13. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - NO. 1 JUNCTION CONNECTOR)


    1. A01GY1LE62

      Disconnect the No. 2 junction connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L97-5 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      L97-16 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 7. Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)
      *b Front view of DLC3

  14. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR SIDE)


    1. A01GXEKE21

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L31-6 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      L31-14 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 8. Text in Illustration
      *a Front view of DLC3

  15. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - AIR CONDITIONING AMPLIFIER ASSEMBLY)


    1. A01GY1LE63

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L97-2 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      L97-13 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 9. Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)
      *b Front view of DLC3

  16. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - MULTI-MEDIA MODULE RECEIVER ASSEMBLY)


    1. A01GWS9E71

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L97-3 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      L97-14 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 10. Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)
      *b Front view of DLC3

  17. Click here

    CONNECT CONNECTOR


    1. Reconnect the L97 No. 2 junction connector.


  18. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (AIR CONDITIONING AMPLIFIER ASSEMBLY)


    1. A01GX8PE06

      Disconnect the air conditioning amplifier assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L77-3 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      L77-4 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 11. Text in Illustration
      *a

      Rear view of wire harness connector

      (to Air Conditioning Amplifier Assembly)
      *b Front view of DLC3

  19. Click here

    CONNECT CONNECTOR


    1. Reconnect the L97 No. 2 junction connector.


  20. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (MULTI-MEDIA MODULE RECEIVER ASSEMBLY)


    1. A01GWSOE14

      Disconnect the multi-media module receiver assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L164-1 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      L164-2 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 12. Text in Illustration
      *a

      Front view of wire harness connector

      (to Multi-media Module Receiver Assembly)
      *b Front view of DLC3

  21. Click here

    CONNECT CONNECTOR


    1. Reconnect the L97 No. 2 junction connector.


  22. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR)


    1. A01GY1LE64

      Disconnect the No. 3 junction connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L98-7 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      L98-18 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 13. Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

  23. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - SKID CONTROL ECU ASSEMBLY)


    1. A01GY1LE15

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L98-5 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      L98-16 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 14. Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

  24. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - NO. 1 METER ECU SUB-ASSEMBLY)


    1. A01GWS9E65

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L98-6 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      L98-17 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 15. Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

  25. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - MAIN BODY ECU)


    1. A01GWS9E66

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L98-9 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      L98-20 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 16. Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

  26. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - HEADLIGHT SWIVEL ECU ASSEMBLY)


    1. A01GWS9E68

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L98-11 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      L98-22 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 17. Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

  27. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - CENTER AIRBAG SENSOR ASSEMBLY)


    1. A01GWS9E69

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L98-8 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      L98-19 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 18. Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

  28. Click here

    CONNECT CONNECTOR


    1. Reconnect the L98 No. 3 junction connector.


  29. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (SKID CONTROL ECU ASSEMBLY)


    1. A01H0EHE03

      Disconnect the skid control ECU assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A21-9 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      A21-8 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 19. Text in Illustration
      *a

      Front view of wire harness connector

      (to Skid Control ECU Assembly)
      *b Front view of DLC3

  30. Click here

    CONNECT CONNECTOR


    1. Reconnect the L98 No. 3 junction connector.


  31. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 METER ECU SUB-ASSEMBLY)


    1. A01H0RTE09

      Disconnect the No. 1 meter ECU sub-assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L124-20 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      L124-21 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 20. Text in Illustration
      *a

      Front view of wire harness connector

      (to No. 1 Meter ECU Sub-assembly)
      *b Front view of DLC3

  32. Click here

    CONNECT CONNECTOR


    1. Reconnect the L98 No. 3 junction connector.


  33. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (MAIN BODY ECU)


    1. A01GZ67E03

      Disconnect the main body ECU (driver side junction block) connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L11-5 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      L11-6 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 21. Text in Illustration
      *a

      Front view of wire harness connector

      (to Main Body ECU [Driver Side Junction Block])
      *b Front view of DLC3

  34. Click here

    CONNECT CONNECTOR


    1. Reconnect the L98 No. 3 junction connector.


  35. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (HEADLIGHT SWIVEL ECU ASSEMBLY)


    1. A01GXNDE05

      Disconnect the headlight swivel ECU assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A37-12 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      A37-13 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 22. Text in Illustration
      *a

      Rear view of wire harness connector

      (to Headlight Swivel ECU Assembly)
      *b Front view of DLC3

  36. Click here

    CONNECT CONNECTOR


    1. Reconnect the L98 No. 3 junction connector.


  37. Click here

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (CENTER AIRBAG SENSOR ASSEMBLY)


    1. A01GX60E18

      Disconnect the center airbag sensor assembly connector (Click here).

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L73-13 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher
      L73-22 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher
      Table 23. Text in Illustration
      *a

      Rear view of wire harness connector

      (to Center Airbag Sensor Assembly)
      *b Front view of DLC3

  38. Click here

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DLC3 (CANH, CANL)

  39. Click here

    REPLACE NO. 1 JUNCTION CONNECTOR

  40. Click here

    REPLACE ECMClick here

  41. Click here

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (HYBRID VEHICLE CONTROL ECU - ECM)

  42. Click here

    REPLACE HYBRID VEHICLE CONTROL ECUClick here

  43. Click here

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (HYBRID VEHICLE CONTROL ECU - NO. 1 JUNCTION CONNECTOR)

  44. Click here

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 2 JUNCTION CONNECTOR - NO. 1 JUNCTION CONNECTOR)

  45. Click here

    REPLACE NO. 2 JUNCTION CONNECTOR

  46. Click here

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLYClick here

  47. Click here

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO AIR CONDITIONING AMPLIFIER ASSEMBLY (CANH, CANL)

  48. Click here

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLYClick here

  49. Click here

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO MULTI-MEDIA MODULE RECEIVER ASSEMBLY (CANH, CANL)

  50. Click here

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 3 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR)

  51. Click here

    REPLACE NO. 3 JUNCTION CONNECTOR

  52. Click here

    REPLACE SKID CONTROL ECU ASSEMBLYClick here

  53. Click here

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SKID CONTROL ECU ASSEMBLY (CANH, CANL)

  54. Click here

    REPLACE NO. 1 METER ECU SUB-ASSEMBLYClick here

  55. Click here

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO NO. 1 METER ECU SUB-ASSEMBLY (CANH, CANL)

  56. Click here

    REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)

  57. Click here

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO MAIN BODY ECU (CANH, CANL)

  58. Click here

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLYClick here

  59. Click here

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO HEADLIGHT SWIVEL ECU ASSEMBLY (CANH, CANL)

  60. Click here

    REPLACE CENTER AIRBAG SENSOR ASSEMBLYClick here

  61. Click here

    REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO CENTER AIRBAG SENSOR ASSEMBLY (CANH, CANL)