DETERMINING OPEN CIRCUIT LOCATION (HS-CAN) [SKYACTIV-D 1.5 (ATX), SKYACTIV-D 2.2 (ATX) (L.H.D.)]

id100243000400

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-D 1.5 (ATX), SKYACTIV-D 2.2 (ATX) (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 the CAN system-related module DTCs and the failed module on the M-MDS screen.

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-D 1.5 (ATX), SKYACTIV-D 2.2 (ATX) (L.H.D.)].)

DTC Output Pattern And Malfunctioning Location

A

Possible cause

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

•  PCM power supply voltage or body ground malfunction

•  Open circuit in wiring harness between PCM and connector C-60

•  Connector C-60 malfunction

•  PCM malfunction

System wiring diagram

am3zzw00019479

Inspection item

•  PCM power supply voltage-related wiring harness and fuse

•  PCM body ground related wiring harness

•  PCM connector

•  Connector C-60

•  Wiring harness between PCM terminal 2C and connector C-60 (SKYACTIV-D 1.5)

•  Wiring harness between PCM terminal 2D and connector C-60 (SKYACTIV-D 1.5)

•  Wiring harness between PCM terminal 2AK and connector C-60 (SKYACTIV-D 2.2)

•  Wiring harness between PCM terminal 2AL and connector C-60 (SKYACTIV-D 2.2)

•  PCM

B

Possible cause

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

•  DSC HU/CM power supply voltage or body ground malfunction

•  Open circuit in wiring harness between DSC HU/CM and connector C-60

•  Connector C-60 malfunction

•  DSC HU/CM malfunction

System wiring diagram

am3zzw00019480

Inspection item

•  DSC HU/CM power supply voltage-related wiring harness and fuse

•  DSC HU/CM body ground related wiring harness

•  DSC HU/CM connector

•  Connector C-60

•  Wiring harness between DSC HU/CM terminal AF and connector C-60

•  Wiring harness between DSC HU/CM terminal AC and connector C-60

•  DSC HU/CM

C

Possible cause

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

•  Radar unit power supply voltage or body ground malfunction

•  Open circuit in wiring harness between radar unit and connector C-60

•  Connector C-60 malfunction

•  Radar unit malfunction

System wiring diagram

am3zzw00019481

Inspection item

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

•  Radar unit body ground related wiring harness

•  Radar unit connector

•  Connector C-60

•  Wiring harness between radar unit terminal D and connector C-60

•  Wiring harness between radar unit terminal C and connector C-60

•  Radar unit

D

Possible cause

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

•  Open circuit in wiring harness between connector C-60 and connector C-32

•  Connector C-60 malfunction

•  Connector C-32 malfunction

System wiring diagram

am3zzw00019482

Inspection item

•  Connector C-60

•  Connector C-32

•  Wiring harness between connector C-60 and connector C-32

E

Possible cause

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

•  AFS control module / auto leveling control module / adaptive LED headlights control module power supply voltage or body ground malfunction

•  Open circuit in wiring harness between AFS control module / auto leveling control module / adaptive LED headlights control module and connector C-32

•  Connector C-32 malfunction

•  AFS control module / auto leveling control module / adaptive LED headlights control module malfunction

System wiring diagram

am3zzw00019483

Inspection item

•  AFS control module / auto leveling control module / adaptive LED headlights control module power supply voltage-related wiring harness and fuse

•  AFS control module / auto leveling control module / adaptive LED headlights control module body ground related wiring harness

•  AFS control module / auto leveling control module / adaptive LED headlights control module connector

•  Connector C-32

•  Wiring harness between AFS control module / auto leveling control module / adaptive LED headlights control module terminal A and connector C-32

•  Wiring harness between AFS control module / auto leveling control module / adaptive LED headlights control module terminal B and connector C-32

•  AFS control module / auto leveling control module / adaptive LED headlights control module

F

Possible cause

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

•  Open circuit in wiring harness between connector C-32 and front body control module (FBCM)

•  Connector C-32 malfunction

•  CAN circuit in front body control module (FBCM) malfunction

System wiring diagram

am3zzw00019484

Inspection item

•  Front body control module (FBCM) connector

•  Connector C-32

•  Wiring harness between front body control module (FBCM) terminal 2K and connector C-32

•  Wiring harness between front body control module (FBCM) terminal 2I and connector C-32

•  Front body control module (FBCM)

―  Between front body control module (FBCM) terminal 2K and front body control module (FBCM) terminal 2P

―  Between front body control module (FBCM) terminal 2I and front body control module (FBCM) terminal 2N

G

Possible cause

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

•  TCM power supply voltage or body ground malfunction

•  Open circuit in wiring harness between TCM and connector C-01

•  Open circuit in wiring harness between connector C-01 and front body control module (FBCM)

•  Connector C-01 malfunction

•  TCM malfunction

•  CAN circuit in front body control module (FBCM) malfunction

System wiring diagram

am3zzw00019485

Inspection item

•  TCM power supply voltage-related wiring harness and fuse

•  TCM body ground related wiring harness

•  TCM connector

•  Front body control module (FBCM) connector

•  Connector C-01

•  Wiring harness between TCM terminal E and connector C-01

•  Wiring harness between TCM terminal F and connector C-01

•  Wiring harness between front body control module (FBCM) terminal 2R and connector C-01

•  Wiring harness between front body control module (FBCM) terminal 2L and connector C-01

•  TCM

•  Front body control module (FBCM)

―  Between front body control module (FBCM) terminal 2R and front body control module (FBCM) terminal 2P

―  Between front body control module (FBCM) terminal 2L and front body control module (FBCM) terminal 2N

H

Possible cause

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

•  Front body control module (FBCM) power supply voltage or body ground malfunction

•  Front body control module (FBCM) malfunction

System wiring diagram

am3zzw00019486

Inspection item

•  Front body control module (FBCM) power supply voltage-related wiring harness and fuse

•  Front body control module (FBCM) body ground related wiring harness

•  Front body control module (FBCM)

I

With forward sensing camera (FSC)

Possible cause

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

•  Open circuit in wiring harness between front body control module (FBCM) and connector C-03

•  Open circuit in wiring harness between connector C-03 and connector C-12

•  Open circuit in wiring harness between connector C-12 and branch A

•  Connector C-03 malfunction

•  Connector C-12 malfunction

•  CAN circuit in front body control module (FBCM) malfunction

System wiring diagram

am3zzw00019487

Inspection item

•  Front body control module (FBCM) connector

•  Connector C-03

•  Connector C-12

•  Wiring harness between front body control module (FBCM) terminal 2P and connector C-03

•  Wiring harness between front body control module (FBCM) terminal 2N and connector C-03

•  Wiring harness between connector C-03 and connector C-12

•  Wiring harness between connector C-12 and branch A

•  Front body control module (FBCM)

―  Between front body control module (FBCM) terminal 2K and front body control module (FBCM) terminal 2P

―  Between front body control module (FBCM) terminal 2I and front body control module (FBCM) terminal 2N

Without forward sensing camera (FSC)

Possible cause

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

•  Open circuit in wiring harness between front body control module (FBCM) and connector C-03

•  Open circuit in wiring harness between connector C-03 and connector C-12

•  Open circuit in wiring harness between connector C-12 and connector C-12

•  Open circuit in wiring harness between connector C-12 and connector C-33

•  Connector C-03 malfunction

•  Connector C-12 malfunction

•  Connector C-33 malfunction

•  CAN circuit in front body control module (FBCM) malfunction

System wiring diagram

am3zzw00019488

Inspection item

•  Front body control module (FBCM) connector

•  Connector C-03

•  Connector C-12

•  Connector C-33

•  Wiring harness between front body control module (FBCM) terminal 2P and connector C-03

•  Wiring harness between front body control module (FBCM) terminal 2N and connector C-03

•  Wiring harness between connector C-03 and connector C-12

•  Wiring harness between connector C-12 and connector C-12

•  Wiring harness between connector C-12 and connector C-33

•  Front body control module (FBCM)

―  Between front body control module (FBCM) terminal 2K and front body control module (FBCM) terminal 2P

―  Between front body control module (FBCM) terminal 2I and front body control module (FBCM) terminal 2N

J

Possible cause

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

•  Forward sensing camera (FSC) power supply voltage or body ground malfunction

•  Open circuit in wiring harness between forward sensing camera (FSC) and branch A

•  Forward sensing camera (FSC) malfunction

System wiring diagram

am3zzw00019489

Inspection item

•  Forward sensing camera (FSC) power supply voltage-related wiring harness and fuse

•  Forward sensing camera (FSC) body ground related wiring harness

•  Forward sensing camera (FSC) connector

•  Wiring harness between forward sensing camera (FSC) terminal M and branch A

•  Wiring harness between forward sensing camera (FSC) terminal N and branch A

•  Forward sensing camera (FSC)

K

Possible cause

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

•  Open circuit in wiring harness between branch A and connector C-12

•  Open circuit in wiring harness between connector C-12 and connector C-33

•  Connector C-12 malfunction

•  Connector C-33 malfunction

System wiring diagram

am3zzw00019490

Inspection item

•  Connector C-12

•  Connector C-33

•  Wiring harness between branch A and connector C-12

•  Wiring harness between connector C-12 and connector C-33

L

Possible cause

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

•  EPS control module power supply voltage or body ground malfunction

•  Open circuit in wiring harness between EPS control module and connector C-33

•  Connector C-33 malfunction

•  EPS control module malfunction

System wiring diagram

am3zzw00019491

Inspection item

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

•  EPS control module body ground related wiring harness

•  EPS control module connector

•  Connector C-33

•  Wiring harness between EPS control module terminal 2B and connector C-33

•  Wiring harness between EPS control module terminal 2D and connector C-33

•  EPS control module

M

Possible cause

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

•  Start stop unit power supply voltage or body ground malfunction

•  Open circuit in wiring harness between start stop unit and connector C-33

•  Connector C-33 malfunction

•  Start stop unit malfunction

System wiring diagram

am3zzw00019492

Inspection item

•  Start stop unit power supply voltage-related wiring harness and fuse

•  Start stop unit body ground related wiring harness

•  Start stop unit connector

•  Connector C-33

•  Wiring harness between start stop unit terminal 2M and connector C-33

•  Wiring harness between start stop unit terminal 2O and connector C-33

•  Start stop unit

N

Possible cause

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

•  Connector C-33 malfunction

•  Connector C-34 malfunction

•  JB No.2 malfunction

System wiring diagram

am3zzw00019493

Inspection item

•  Connector C-33

•  Connector C-34

•  JB No.2

O

Possible cause

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

•  Connectivity master unit (CMU) power supply voltage or body ground malfunction

•  Open circuit in wiring harness between connectivity master unit (CMU) and connector C-34

•  Connector C-34 malfunction

•  Connectivity master unit (CMU) malfunction

System wiring diagram

am3zzw00019494

Inspection item

•  Connectivity master unit (CMU) power supply voltage-related wiring harness and fuse

•  Connectivity master unit (CMU) body ground related wiring harness

•  Connectivity master unit (CMU) connector

•  Connector C-34

•  Wiring harness between connectivity master unit (CMU) terminal 2E and connector C-34

•  Wiring harness between connectivity master unit (CMU) terminal 2F and connector C-34

•  Connectivity master unit (CMU)

P

Possible cause

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

•  SAS control module power supply voltage or body ground malfunction

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

•  Connector C-34 malfunction

•  SAS control module malfunction

System wiring diagram

am3zzw00019495

Inspection item

Warning

•   Handling the component parts of the SRS air bag system improperly can accidentally operate (deploy) the air bag module, which may seriously injure you. Read the service warnings and cautions before handling the air bag system components of the SRS air bag system.

(See AIR BAG SYSTEM SERVICE WARNINGS.)

(See AIR BAG SYSTEM SERVICE CAUTIONS.)

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

•  SAS control module body ground related wiring harness

•  SAS control module connector

•  Connector C-34

•  Wiring harness between SAS control module terminal 3B and connector C-34

•  Wiring harness between SAS control module terminal 3C and connector C-34

•  SAS control module

Q

Possible cause

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

•  MAZDA ERA-GLONASS control module power supply voltage or body ground malfunction

•  Open circuit in wiring harness between connector C-34 and connector C-62

•  Open circuit in wiring harness between MAZDA ERA-GLONASS control module and connector C-62

•  Connector C-34 malfunction

•  Connector C-62 malfunction

•  MAZDA ERA-GLONASS control module malfunction

System wiring diagram

am3zzw00020413

Inspection item

•  MAZDA ERA-GLONASS control module power supply voltage-related wiring harness and fuse

•  MAZDA ERA-GLONASS control module body ground related wiring harness

•  MAZDA ERA-GLONASS control module connector

•  Connector C-34

•  Connector C-62

•  Wiring harness between connector C-34 and connector C-62

•  Wiring harness between MAZDA ERA-GLONASS control module terminal 1Q and connector C-62

•  Wiring harness between MAZDA ERA-GLONASS control module terminal 1S and connector C-62

•  MAZDA ERA-GLONASS control module

R

Possible cause

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

•  Open circuit in wiring harness between connector C-34 and connector C-09

•  Open circuit in wiring harness between connector C-09 and connector C-40

•  Connector C-34 malfunction

•  Connector C-09 malfunction

•  Connector C-40 malfunction

System wiring diagram

am3zzw00019496

Inspection item

•  Connector C-34

•  Connector C-09

•  Connector C-40

•  Wiring harness between connector C-34 and connector C-09

•  Wiring harness between connector C-09 and connector C-40

S

Possible cause

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

•  Audio amplifier power supply voltage or body ground malfunction

•  Open circuit in wiring harness between audio amplifier and connector C-40

•  Connector C-40 malfunction

•  Audio amplifier malfunction

System wiring diagram

am3zzw00019497

Inspection item

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

•  Audio amplifier body ground related wiring harness

•  Audio amplifier connector

•  Connector C-40

•  Wiring harness between audio amplifier terminal 2L and connector C-40

•  Wiring harness between audio amplifier terminal 2N and connector C-40

•  Audio amplifier

T

Possible cause

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

•  Electric parking brake control module power supply voltage or body ground malfunction

•  Open circuit in wiring harness between electric parking brake control module and connector C-40

•  Connector C-40 malfunction

•  Electric parking brake control module malfunction

System wiring diagram

am3zzw00019498

Inspection item

•  Electric parking brake control module power supply voltage-related wiring harness and fuse

•  Electric parking brake control module body ground related wiring harness

•  Electric parking brake control module connector

•  Connector C-40

•  Wiring harness between electric parking brake control module terminal AD and connector C-40

•  Wiring harness between electric parking brake control module terminal AB and connector C-40

•  Electric parking brake control module

U

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 connector C-40 and connector C-09

•  Open circuit in wiring harness between connector C-09 and connector instrument cluster

•  Connector C-40 malfunction

•  Connector C-09 malfunction

•  Instrument cluster malfunction

System wiring diagram

am3zzw00019499

Inspection item

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

•  Instrument cluster body ground related wiring harness

•  Instrument cluster connector

•  Connector C-40

•  Connector C-09

•  Wiring harness between connector C-40 and connector C-09

•  Wiring harness between instrument cluster terminal B and connector C-09

•  Wiring harness between instrument cluster terminal D and connector C-09

•  Instrument cluster