DETERMINING OPEN CIRCUIT LOCATION (MS-CAN) [SKYACTIV-G 1.5/2.0/2.5, SKYACTIV-D 1.5 (MTX), SKYACTIV-D 2.2 (MTX) (L.H.D.)]

id100242000500

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 [SKYACTIV-G 1.5/2.0/2.5, SKYACTIV-D 1.5 (MTX), SKYACTIV-D 2.2 (MTX) (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 [SKYACTIV-G 1.5/2.0/2.5, SKYACTIV-D 1.5 (MTX), SKYACTIV-D 2.2 (MTX) (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-34

•  Connector C-34 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

•  Connector C-34

•  Wiring harness between instrument cluster terminal C and connector C-34

•  Wiring harness between instrument cluster terminal E and connector C-34

•  Instrument cluster

B

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-34

•  Connector C-34 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-34

•  Wiring harness between parking assist unit terminal AA and connector C-34

•  Wiring harness between parking assist unit terminal AB and connector C-34

•  Parking assist unit

C

Possible cause

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

•  JB No.2 malfunction

•  Connector C-34 malfunction

•  Connector C-33 malfunction

System wiring diagram

am3zzw00019542

Inspection item

•  JB No.2

•  Connector C-34

•  Connector C-33

D

Possible cause

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

•  Climate control unit power supply voltage or body ground malfunction

•  Open circuit in wiring harness between climate control unit and connector C-33

•  Connector C-33 malfunction

•  Climate control unit malfunction

System wiring diagram

am3zzw00019543

Inspection item

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

•  Climate control unit body ground related wiring harness

•  Climate control unit connector

•  Connector C-33

•  Wiring harness between climate control unit 1S and connector C-33 (with full-auto air conditioner (dual type))

•  Wiring harness between climate control unit 1U and connector C-33 (with full-auto air conditioner (dual type))

•  Wiring harness between climate control unit D and connector C-33 (with full-auto air conditioner (single type))

•  Wiring harness between climate control unit B and connector C-33 (with full-auto air conditioner (single type))

•  Climate control unit

E

Possible cause

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

•  Open circuit in wiring harness between connector C-33 and connector C-59

•  Open circuit in wiring harness between connector C-59 and rear body control module (RBCM)

•  Connector C-59 malfunction

•  Connector C-33 malfunction

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

System wiring diagram

am3zzw00019544

Inspection item

•  Rear body control module (RBCM) connector

•  Connector C-59

•  Connector C-33

•  Wiring harness between connector C-33 and connector C-59

•  Wiring harness between rear body control module (RBCM) terminal 3E and connector C-59

•  Wiring harness between rear body control module (RBCM) terminal 3G and connector C-59

•  Rear body control module (RBCM)

―  Between rear body control module (RBCM) terminal 3E and rear body control module (RBCM) terminal 4G

―  Between rear body control module (RBCM) terminal 3G and rear body control module (RBCM) terminal 4J

F

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-19

•  Open circuit in wiring harness between connector C-19 and rear body control module (RBCM)

•  Connector C-19 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-19

•  Wiring harness between blind spot monitoring (BSM) control module (LH) terminal D and connector C-19

•  Wiring harness between blind spot monitoring (BSM) control module (LH) terminal E and connector C-19

•  Wiring harness between connector C-19 and rear body control module (RBCM) terminal 4G

•  Wiring harness between connector C-19 and rear body control module (RBCM) terminal 4J

•  Rear body control module (RBCM)

―  Between rear body control module (RBCM) terminal 3E and rear body control module (RBCM) terminal 4G

―  Between rear body control module (RBCM) terminal 3G and rear body control module (RBCM) terminal 4J

G

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

am3zzw00019546

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)