DETERMINING OPEN CIRCUIT LOCATION (CAN-BUS No.2) [TYPE-B]
id100248002100
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Caution
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• 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 module displayed in red or blue on the M-MDS screen.
2. Apply the communication error DTC and the module displayed in red or blue to the 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)
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Note
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• 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.)
• The module may be displayed in red or blue on the M-MDS screen even if there is no malfunction depending on the vehicle specification.
3. Inspect the possible cause and inspection item of the applicable malfunctioning part.
DTC Output Pattern And Malfunctioning Location
Cross (×): Control error-related DTC
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M-MDS display
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DTC
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DTC output pattern and malfunctioning location
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DTC output module
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IC
(Instrument cluster)
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U0142:00
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×
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×
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×
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U0159:00
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×
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×
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U0232:00
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×
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×
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×
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EATC
(Front climate control unit)
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U0155:00
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×
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PSM
(parking assist unit)
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U0155:00
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×
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BSM
(Blind spot monitoring (BSM) control module (LH))
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U0155:00
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×
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R_BCM
(Rear body control module (RBCM))
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U0155:00
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×
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GWU
(Gateway unit (GWU))
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U0151:00
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U2132:00
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M-MDS display module
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Module displayed in red or blue
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IC
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×
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×
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EATC
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×
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×
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×
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PSM
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×
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×
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×
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BSM
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×
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×
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×
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×
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R_BCM
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×
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×
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×
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×
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GWU
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×
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Diagnostic result
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Possible cause and inspection item
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A
Possible cause
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• 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-64
• Connector C-64 malfunction
• Instrument cluster malfunction
System wiring diagram
Inspection item
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• Instrument cluster power supply voltage-related wiring harness and fuse
• Instrument cluster body ground related wiring harness
• Connector C-64
• Wiring harness between instrument cluster terminal 1C and connector C-64
• Wiring harness between instrument cluster terminal 1E and connector C-64
• Instrument cluster
B
With wireless charger (Qi)
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Possible cause
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• Connector terminal disconnection, poor contact, damage, deformation, corrosion
• Open circuit in wiring harness between connector C-64 and connectors C-78, C-79
• Connector C-64 malfunction
• Connectors C-78, C-79 malfunction
System wiring diagram
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Inspection item
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• Connector C-64
• Connectors C-78, C-79
• Wiring harness between connector C-64 and connectors C-78, C-79
Without wireless charger (Qi)
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Possible cause
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• Connector terminal disconnection, poor contact, damage, deformation, corrosion
• Open circuit in wiring harness between connector C-64 and connector C-63
• Connector C-64 malfunction
• Connector C-63 malfunction
System wiring diagram
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Inspection item
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• Connector C-64
• Connector C-63
• Wiring harness between connector C-64 and connector C-63
C
Possible cause
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• Connector terminal disconnection, poor contact, damage, deformation, corrosion
• Front climate control unit power supply voltage or body ground malfunction
• Open circuit in wiring harness between front climate control unit and connector C-63
• Connector C-63 malfunction
• Front climate control unit malfunction
System wiring diagram
Inspection item
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• Front climate control unit power supply voltage-related wiring harness and fuse
• Front climate control unit body ground related wiring harness
• Front climate control unit connector
• Connector C-63
• Wiring harness between front climate control unit 1K and connector C-63
• Wiring harness between front climate control unit 1M and connector C-63
• Front climate control unit
D
Possible cause
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• 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-63
• Connector C-63 malfunction
• Parking assist unit malfunction
System wiring diagram
Inspection item
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• 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-63
• Wiring harness between parking assist unit AA and connector C-63
• Wiring harness between parking assist unit AB and connector C-63
• Parking assist unit
E
Possible cause
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• Connector terminal disconnection, poor contact, damage, deformation, corrosion
• Connector C-63 malfunction
• Connector C-14 malfunction
• Open circuit in wiring harness between connector C-63 and connector C-14
• Open circuit in wiring harness between connector C-14 and rear body control module (RBCM)
• CAN circuit in rear body control module (RBCM) malfunction
System wiring diagram
Inspection item
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• Rear body control module (RBCM) connector
• Connector C-63
• Connector C-14
• Wiring harness between connector C-63 and connector C-14
• Wiring harness between connector C-14 and rear body control module (RBCM) terminal 3E
• Wiring harness between connector C-14 and rear body control module (RBCM) terminal 3G
• Rear body control module (RBCM)
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― 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
F
Possible cause
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• 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-16
• Open circuit in wiring harness between connector C-16 and rear body control module (RBCM)
• Connector C-16 malfunction
• Blind spot monitoring (BSM) control module (LH) malfunction
• CAN circuit in rear body control module (RBCM) malfunction
System wiring diagram
Inspection item
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• 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-16
• Wiring harness between blind spot monitoring (BSM) control module (LH) terminal C and connector C-16
• Wiring harness between blind spot monitoring (BSM) control module (LH) terminal D and connector C-16
• Wiring harness between connector C-16 and rear body control module (RBCM) terminal 4L
• Wiring harness between connector C-16 and rear body control module (RBCM) terminal 4I
• Rear body control module (RBCM)
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― 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
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• 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
Inspection item
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• 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)
H
Possible cause
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• Connector terminal disconnection, poor contact, damage, deformation, corrosion
• Gateway unit (GWU) power supply voltage or body ground malfunction
• Open circuit in wiring harness between connector C-64 and connector C-17
• Open circuit in wiring harness between connector C-17 and gateway unit (GWU)
• Connector C-64 malfunction
• Connector C-17 malfunction
• Gateway unit (GWU) malfunction
System wiring diagram
Inspection item
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• Gateway unit (GWU) power supply voltage-related wiring harness and fuse
• Gateway unit (GWU) body ground related wiring harness
• Gateway unit (GWU) connector
• Connector C-64
• Connector C-17
• Wiring harness between connector C-64 and connector C-17
• Wiring harness between gateway unit (GWU) control module (LH) terminal 2L and connector C-17
• Wiring harness between gateway unit (GWU) control module (LH) terminal 2J and connector C-17
• Wiring harness between gateway unit (GWU) control module (LH) terminal 2H and connector C-17
• Wiring harness between gateway unit (GWU) control module (LH) terminal 2F and connector C-17
• Gateway unit (GWU)