DETERMINING OPEN CIRCUIT LOCATION (MS-CAN) [SKYACTIV-D 2.2 (ATX), MZR 1.6]

id100211000500

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 2.2 (ATX), MZR 1.6].)

• 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-D 2.2 (ATX), MZR 1.6].)

DTC Output Pattern And Malfunctioning Location

Cross (×): Communication error-related DTC and failed module

M-MDS display	DTC	DTC output pattern and malfunctioning location
DTC output module	DTC	DTC output pattern and malfunctioning location
IC (Instrument cluster)	U0142:00			×		×
IC (Instrument cluster)	U0232:00			×	×
EATC^*1 (Climate control unit)	U0155:00	×
RVM^*2 (Rear vehicle monitoring control module (LH))	U0100:00	×
	U0121:00	×
	U0155:00	×
	U0214:00	×
BSML^*3 (BSM control module (LH))	U0100:00	×
	U0131:00	×
	U0155:00	×
	U0214:00	×
R_BCM (Rear body control module (RBCM))	U0155:00	×
M-MDS display module		[Fail] display pattern
IC		×
EATC^*1			×
RVM^*2				×	×
BSML^*3				×	×
R_BCM				×		×
Diagnostic result
Possible cause and inspection item		A	B	C	D	E	F

*1 :with full-auto air conditioner

*2 :With rear vehicle monitoring system

*3 :With BSM system

Parking sensor buzzer activation conditions are met and parking sensor buzzer activates

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

am3zzw00014849

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

Parking sensor buzzer does not activate even though parking sensor buzzer activation conditions are met

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

am3zzw00014851

Inspection item

• JB No.2

• Connector C-34

• Connector C-33

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

am3zzw00014852

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

• Wiring harness between climate control unit 1U and connector C-33

• Climate control unit

Possible cause

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

• Open circuit in wiring harness between connector C-33 and connector C-08

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

• Connector C-08 malfunction

• Connector C-33 malfunction

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

System wiring diagram

am3zzw00014853

Inspection item

• Rear body control module (RBCM) connector

• Connector C-08

• Connector C-33

• Wiring harness between connector C-33 and connector C-08

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

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

• 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

Possible cause

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

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

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

• Open circuit in wiring harness between rear vehicle control module (LH) and connector C-19 (with rear vehicle monitoring system)

• Open circuit in wiring harness between BCM control module (LH) and connector C-19 (with BSM system)

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

• Connector C-19 malfunction

• Rear vehicle control module (LH) malfunction (with rear vehicle monitoring system)

• BSM control module (LH) malfunction (with BSM system)

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

System wiring diagram

am3zzw00014854

Inspection item

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

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

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

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

• Rear vehicle control module (LH) connector (with rear vehicle monitoring system)

• BSM control module (LH) connector (with BSM system)

• Rear body control module (RBCM) connector

• connector C-19

• Wiring harness between rear vehicle control module (LH) terminal A and connectors C-19 (with rear vehicle monitoring system)

• Wiring harness between rear vehicle control module (LH) terminal D and connectors C-19 (with rear vehicle monitoring system)

• Wiring harness between BSM control module (LH) terminal C and connectors C-19 (with BSM system)

• Wiring harness between BSM control module (LH) terminal D and connectors C-19 (with BSM system)

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

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

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

am3zzw00014855

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)

1. Switch the ignition ON (engine off).

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

• If the parking sensor buzzer does not activate even though the parking sensor buzzer activation conditions are met, perform an inspection of the items listed in the possible causes for the Parking Sensor Control Module Circuit Malfunction.

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

am3zzw00014850

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