DETERMINING OPEN CIRCUIT LOCATION (MS-CAN) [SKYACTIV-D 2.2 (R.H.D.)]

id100206000500

Caution

•  Perform the following malfunction diagnosis only when it is diagnosed with a open circuit by CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [SKYACTIV-D 2.2 (R.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.

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.

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 [SKYACTIV-D 2.2 (R.H.D.)], and verify that the repairs have been completed.

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-35

•  Connector C-35 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-35

•  Wiring harness between instrument cluster terminal C and connector C-35

•  Wiring harness between instrument cluster terminal E and connector C-35

•  Instrument cluster

B

With full-auto air conditioner

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 component and connector C-34

•  Connector C-34 malfunction

•  Climate control unit malfunction

System wiring diagram

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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-34

•  Wiring harness between climate control unit terminal 1S and connector C-34

•  Wiring harness between climate control unit terminal 1U and connector C-34

•  Climate control unit

With manual air conditioner

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-34

•  Connector C-34 malfunction

•  Climate control unit malfunction

System wiring diagram

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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-34

•  Wiring harness between climate control unit terminal U and connector C-34

•  Wiring harness between climate control unit terminal W and connector C-34

•  Climate control unit

C

Possible cause

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

•  Open circuit in wiring harness between connector C-35 and connector C-34

•  Connector C-35 malfunction

•  Connector C-34 malfunction

System wiring diagram

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Inspection item

•  Connector C-34

•  Connector C-35

•  Wiring harness between connector C-35 and connector C-34

D

Possible cause

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

•  Audio unit power supply voltage or body ground malfunction

•  Open circuit in wiring harness between audio unit and connector C-34

•  Connector C-34 malfunction

•  Audio unit malfunction

System wiring diagram

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Inspection item

•  Audio unit power supply voltage-related wiring harness and fuse

•  Audio unit body ground related wiring harness

•  Audio unit connector

•  Connector C-34

•  Wiring harness between audio unit terminal 1O and connector C-34

•  Wiring harness between audio unit terminal 1Q and connector C-34

•  Audio unit

E

Possible cause

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

•  Open circuit in wiring harness between connector C-34 and connector C-08

•  Open circuit in wiring harness between connector C-08 and rear body control module (RBCM)

•  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-34

•  Connector C-08

•  Wiring harness between connector C-34 and connector C-08

•  Wiring harness between connector C-08 and rear body control module (RBCM)

•  Wiring harness between connector C-08 and rear body control module (RBCM) terminal 3E

•  Wiring harness between connector C-08 and rear body control module (RBCM) terminal 3G

•  Rear body control module (RBCM)

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

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

F

Possible cause

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

•  Rear vehicle monitoring control module (LH) power supply voltage or body ground malfunction

•  Open circuit in wiring harness between rear vehicle monitoring control module (LH) and connector C-23

•  Open circuit in wiring harness between connector C-23 and rear body control module (RBCM)

•  Connector C-23 malfunction

•  Rear vehicle monitoring control module (LH) malfunction

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

System wiring diagram

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Inspection item

•  Rear vehicle monitoring control module (LH) power supply voltage-related wiring harness and fuse

•  Rear vehicle monitoring control module (LH) body ground related wiring harness

•  Rear body control module (RBCM) connector

•  Rear vehicle monitoring control module (LH) connector

•  Connector C-23

•  Wiring harness between rear vehicle monitoring control module (LH) terminal A and connector C-23

•  Wiring harness between rear vehicle monitoring control module (LH) terminal D and connector C-23

•  Wiring harness between connector C-23 and rear body control module (RBCM) terminal 4I

•  Wiring harness between connector C-23 and rear body control module (RBCM) terminal 4L

•  Rear vehicle monitoring control module (LH)

•  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

G

Possible cause

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

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

•  Open circuit in wiring harness between BSM control module (LH) and connector C-23

•  Open circuit in wiring harness between connector C-23 and rear body control module (RBCM)

•  Connector C-23 malfunction

•  BSM control module (LH) malfunction

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

System wiring diagram

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Inspection item

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

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

•  Rear body control module (RBCM) connector

•  BSM control module (LH) connector

•  Connector C-23

•  Wiring harness between BSM control module (LH) terminal C and connector C-23

•  Wiring harness between BSM control module (LH) terminal D and connector C-23

•  Wiring harness between connector C-23 and rear body control module (RBCM) terminal 4I

•  Wiring harness between connector C-23 and rear body control module (RBCM) terminal 4L

•  BSM control module (LH)

•  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

H

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)

I

1.  Perform the clock input/output check mode. (See CLOCK INPUT/OUTPUT CHECK MODE.)

•  If "2:00" is displayed, go to the next step.

•  "2:Er is displayed, inspect the inspection items in the possible causes for Possible cause.

2.  Shift the selector lever (ATX) or shift lever (MTX) to the R position.

•  If images from the rear mount camera appear in the audio unit, inspect the inspection items in the possible causes for the System wiring diagram.

•  If images from the rear mount camera do not appear in the audio unit, inspect the inspection items in the possible causes for Inspection item.

Clock Circuit Malfunction

Possible cause

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

•  Clock component power supply voltage or body ground malfunction

•  Open circuit in wiring harness between clock component and connector C-34

•  Connector C-34 malfunction

•  Clock component malfunction

System wiring diagram

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Inspection item

•  Clock component power supply voltage-related wiring harness and fuse

•  Clock component body ground related wiring harness

•  Clock component connector

•  Connector C-34

•  Wiring harness between clock component terminal E and connector C-34

•  Wiring harness between clock component terminal G and connector C-34

•  Clock component

Parking Sensor Control Module Circuit Malfunction

Possible cause

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

•  Parking sensor control module power supply voltage or body ground malfunction

•  Open circuit in wiring harness between parking sensor control module and connector C-34

•  Connector C-34 malfunction

•  Parking sensor control module malfunction

System wiring diagram

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Inspection item

•  Parking sensor control module power supply voltage-related wiring harness and fuse

•  Parking sensor control module body ground related wiring harness

•  Parking sensor control module connector

•  Connector C-34

•  Wiring harness between parking sensor control module terminal AA and connector C-34

•  Wiring harness between parking sensor control module terminal AB and connector C-34

•  Parking sensor control module

Rear Mount Camera Circuit Malfunction

Possible cause

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

•  Rear mount camera power supply voltage or body ground malfunction

•  Open circuit in wiring harness between rear mount camera and connector C-21

•  Open circuit in wiring harness between connector C-21 and rear body control module (RBCM)

•  Connector C-21 malfunction

•  Rear mount camera malfunction

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

System wiring diagram

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Inspection item

•  Rear mount camera power supply voltage-related wiring harness and fuse

•  Rear mount camera body ground related wiring harness

•  Rear mount camera connector

•  Rear body control module (RBCM) connector

•  Connector C-21

•  Wiring harness between rear mount camera terminal G and connector C-21

•  Wiring harness between rear mount camera terminal H and connector C-21

•  Wiring harness between rear body control module (RBCM) terminal 4G and connector C-21

•  Wiring harness between rear body control module (RBCM) terminal 4J and connector C-21

•  Rear mount camera

•  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