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

id100239000500

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 2.0/2.5, SKYACTIV-D 2.2 (MTX) (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, and verify that the repairs have been completed. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [SKYACTIV-G 2.0/2.5, SKYACTIV-D 2.2 (MTX) (R.H.D.)].)

DTC output pattern and malfunctioning location

Cross (×): Displayed

M-MDS display		DTC output pattern and malfunctioning location
DTC output module	DTC	DTC output pattern and malfunctioning location
IC (Instrument cluster)	U0142:00					×	×
	U0159:00			×
	U0232:00					×		×
EATC (Climate control unit)	U0155:00	×
PSM^*1 (Parking assist unit)	U0155:00	×
R_BCM (Rear body control module (RBCM))	U0155:00	×			×
BSM^*2 (Blind spot monitoring (BSM) control module (LH))	U0100:00	×			×
	U0121:00	×			×
	U0155:00	×			×
	U0214:00	×			×
BSM^*3 (Blind spot monitoring (BSM) control module (LH))	U0100:00	×			×
	U0155:00	×			×
	U0214:00	×			×
M-MDS display module		[Fail] display pattern
IC		×			×
EATC			×		×
PSM^*1				×	×
R_BCM						×	×
BSM^2,3						×		×
Diagnostic result
Possible cause and inspection item		A	B	C	D	E	F	G	H

*1 :With parking sensor system

*2 :With blind spot monitoring (BSM) system (Except Australian specs.)

*3 :With blind spot monitoring (BSM) system (Australian specs.)

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

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

am6zzw00015260

Inspection item

• Connector C-34

• Connector C-35

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

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

am6zzw00015261

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 (with full-auto air conditioner)

• Wiring harness between climate control unit terminal 1U and connector C-34 (with full-auto air conditioner)

• Wiring harness between climate control unit terminal D and connector C-34 (with manual air conditioner)

• Wiring harness between climate control unit terminal B and connector C-34 (with manual air conditioner)

• Climate control unit

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

am6zzw00015262

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

With blind spot monitoring (BSM) system or with rear mount camera

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

am6zzw00015263

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) 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

Without blind spot monitoring (BSM) system and without rear mount camera

Possible cause

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

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

• 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)

• Rear body control module (RBCM) malfunction

System wiring diagram

am6zzw00014353

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) 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) terminal 3E

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

• Rear body control module (RBCM)

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

am6zzw00015264

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)

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-23

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

• Connector C-23 malfunction

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

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

System wiring diagram

am6zzw00015265

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

• Rear body control module (RBCM) connector

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

• Connector C-23

• Wiring harness between blind spot monitoring (BSM) control module (LH) terminal D and connector C-23 (Except Australian specs.)

• Wiring harness between blind spot monitoring (BSM) control module (LH) terminal E and connector C-23 (Except Australian specs.)

• Wiring harness between blind spot monitoring (BSM) control module (LH) terminal C and connector C-23 (Australian specs.)

• Wiring harness between blind spot monitoring (BSM) control module (LH) terminal D and connector C-23 (Australian specs.)

• 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

• Blind spot monitoring (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 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

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

• If images from the rear mount camera do not appear in the audio unit, inspect the inspection items in the possible causes for Rear Mount Camera Circuit Malfunction. (See Rear Mount Camera Circuit Malfunction.)

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

am6zzw00015266

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 connector C-21 and rear body control module (RBCM) terminal 4G

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

• Rear mount camera

• 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