DETERMINING OPEN CIRCUIT LOCATION (MS-CAN) [L.H.D.]

id100225000500

Caution

•  Perform the following malfunction diagnosis only when it is diagnosed with a open circuit by CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D.].)

•  If the malfunctioning part is detected in the communication line, before disconnecting the related connector for inspection, press the connector in the connection direction to verify that there is no looseness or disconnection.

•  When disconnecting the connector, verify that there is no damage, deformation, or corrosion of the connector terminals.

1.  Verify DTCs of the modules related to the CAN system.

2.  Apply the communication error DTC and the failed module to DTC output pattern and malfunctioning location, and select the possible cause for the diagnostic result and the reference for the inspection item. (See DTC Output Pattern And Malfunctioning Location.)

Note

•  The open circuit location can be determined by the DTC indicated in the DTC output pattern and malfunctioning location chart. DTCs not listed in the chart are not used for the determination of the open circuit location. (See DTC Output Pattern And Malfunctioning Location.)

3.  Inspect the possible cause and inspection item of the applicable malfunctioning part.

4.  After repairs, return to CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW, and verify that the repairs have been completed. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D.].)

DTC Output Pattern And Malfunctioning Location

A

Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion

•  Instrument cluster power supply voltage or body ground malfunction

•  Open circuit in wiring harness between instrument cluster and connector C-46

•  Connector C-46 malfunction

•  Instrument cluster malfunction

System wiring diagram

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Inspection item

•  Instrument cluster power supply voltage-related wiring harness and fuse

•  Instrument cluster body ground related wiring harness

•  Instrument cluster connector

•  Connector C-46

•  Wiring harness between instrument cluster terminal 1C and connector C-46

•  Wiring harness between instrument cluster terminal 1E and connector C-46

•  Instrument cluster

B

Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion

•  Front climate control unit power supply voltage or body ground malfunction

•  Open circuit in wiring harness between front climate control unit and connector C-46

•  Connector C-46 malfunction

•  Front climate control unit malfunction

System wiring diagram

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Inspection item

•  Front climate control unit power supply voltage-related wiring harness and fuse

•  Front climate control unit body ground related wiring harness

•  Front climate control unit connector

•  Connector C-46

•  Wiring harness between front climate control unit 1A(except 2019CY) / 1K(2019CY) and connector C-46

•  Wiring harness between front climate control unit 1C(except 2019CY) / 1M(2019CY) and connector C-46

•  Front climate control unit

C

Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion

•  Parking assist unit power supply voltage or body ground malfunction

•  Open circuit in wiring harness between parking assist unit and connector C-46

•  Connector C-46 malfunction

•  Parking assist unit malfunction

System wiring diagram

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Inspection item

•  Parking assist unit power supply voltage-related wiring harness and fuse

•  Parking assist unit body ground related wiring harness

•  Parking assist unit connector

•  Connector C-46

•  Wiring harness between parking assist unit terminal AA and connector C-46

•  Wiring harness between parking assist unit terminal AB and connector C-46

•  Parking assist unit

D

With rear mount camera / predicted vehicle path assist lines display type

Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion

•  Open circuit in wiring harness between connector C-46 and connector C-13

•  Open circuit in wiring harness between connector C-13 and branch A

•  Open circuit in wiring harness between branch A and rear body control module (RBCM)

•  Connector C-46 malfunction

•  Connector C-13 malfunction

•  CAN circuit in rear body control module (RBCM) malfunction

System wiring diagram

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Inspection item

•  Connector C-46

•  Connector C-13

•  Rear body control module (RBCM) connector

•  Wiring harness between connector C-46 and connector C-13

•  Wiring harness between connector C-13 and branch A

•  Wiring harness between rear body control module (RBCM) terminal 3E and branch A

•  Wiring harness between rear body control module (RBCM) terminal 3G and branch A

•  Rear body control module (RBCM)

?  Between rear body control module (RBCM) terminal 3E and rear body control module (RBCM) terminal 4I

?  Between rear body control module (RBCM) terminal 3G and rear body control module (RBCM) terminal 4L

Without rear mount camera / predicted vehicle path assist lines display type

Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion

•  Open circuit in wiring harness between connector C-46 and connector C-13

•  Open circuit in wiring harness between connector C-13 and rear body control module (RBCM)

•  Connector C-46 malfunction

•  Connector C-13 malfunction

•  CAN circuit in rear body control module (RBCM) malfunction

System wiring diagram

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Inspection item

•  Rear body control module (RBCM) connector

•  Connector C-46

•  Connector C-13

•  Wiring harness between connector C-46 and connector C-13

•  Wiring harness between rear body control module (RBCM) terminal 3E and connector C-13

•  Wiring harness between rear body control module (RBCM) terminal 3G and connector C-13

•  Rear body control module (RBCM)

?  Between rear body control module (RBCM) terminal 3E and rear body control module (RBCM) terminal 4I

?  Between rear body control module (RBCM) terminal 3G and rear body control module (RBCM) terminal 4L

E

Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion

•  Blind spot monitoring (BSM) control module (LH) power supply voltage or body ground malfunction

•  Open circuit in wiring harness between blind spot monitoring (BSM) control module (LH) and connector C-24

•  Open circuit in wiring harness between connector C-24 and rear body control module (RBCM)

•  Connector C-24 malfunction

•  Blind spot monitoring (BSM) control module (LH) malfunction

•  CAN circuit in rear body control module (RBCM) malfunction

System wiring diagram

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Inspection item

•  Blind spot monitoring (BSM) control module (LH) power supply voltage-related wiring harness and fuse

•  Blind spot monitoring (BSM) control module (LH) body ground related wiring harness

•  Blind spot monitoring (BSM) control module (LH) connector

•  Rear body control module (RBCM) connector

•  Connector C-24

•  Wiring harness between blind spot monitoring (BSM) control module (LH) terminal C and connector C-24

•  Wiring harness between blind spot monitoring (BSM) control module (LH) terminal D and connector C-24

•  Wiring harness between connector C-24 and rear body control module (RBCM) terminal 4I

•  Wiring harness between connector C-24 and rear body control module (RBCM) terminal 4L

•  Rear body control module (RBCM)

?  Between rear body control module (RBCM) terminal 3E and rear body control module (RBCM) terminal 4I

?  Between rear body control module (RBCM) terminal 3G and rear body control module (RBCM) terminal 4L

F

Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion

•  Rear body control module (RBCM) power supply voltage or body ground malfunction

•  Rear body control module (RBCM) malfunction

System wiring diagram

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Inspection item

•  Rear body control module (RBCM) power supply voltage-related wiring harness and fuse

•  Rear body control module (RBCM) body ground related wiring harness

•  Rear body control module (RBCM)