Mazdamanuals.com

DETERMINING OPEN CIRCUIT LOCATION (CAN-BUS No.6) [(E)]

id1002x2003700

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 [(E)].)

•  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)

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.)

•  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

A

Possible cause

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

•  Body control module (BCM) power supply voltage or body ground malfunction

•  Open circuit in wiring harness between body control module (BCM) and connector C-06

•  Open circuit in wiring harness between connector C-06 and connector C-10

•  Connector C-06 malfunction

•  Connector C-10 malfunction

•  Body control module (BCM) malfunction

System wiring diagram

am3zzw00027576

Inspection item

•  Body control module (BCM) power supply voltage-related wiring harness and fuse

•  Body control module (BCM) body ground related wiring harness

•  Body control module (BCM) connector

•  Wiring harness between body control module (BCM) terminal 4N and connector C-06

•  Wiring harness between body control module (BCM) terminal 4M and connector C-06

•  Wiring harness between connector C-06 and connector C-10

•  Connector C-06

•  Connector C-10

•  Body control module (BCM)

B

Possible cause

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

•  Front radar sensor power supply voltage or body ground malfunction

•  Open circuit in wiring harness between front radar sensor and connector C-10

•  Connector C-10 malfunction

•  Front radar sensor malfunction

System wiring diagram

am3zzw00027577

Inspection item

•  Front radar sensor power supply voltage-related wiring harness and fuse

•  Front radar sensor body ground related wiring harness

•  Front radar sensor connector

•  Wiring harness between front radar sensor terminal E and connector C-10

•  Wiring harness between front radar sensor terminal C and connector C-10

•  Front radar sensor

C

Possible cause

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

•  Front side radar sensor (LH) power supply voltage or body ground malfunction

•  Open circuit in wiring harness between front side radar sensor (LH) and connector C-10

•  Connector C-10 malfunction

•  Front side radar sensor (LH) malfunction

System wiring diagram

am3zzw00027578

Inspection item

•  Front side radar sensor (LH) power supply voltage-related wiring harness and fuse

•  Front side radar sensor (LH) body ground related wiring harness

•  Front side radar sensor (LH) connector

•  Connector C-10

•  Wiring harness between front side radar sensor (LH) terminal C and connector C-10

•  Wiring harness between front side radar sensor (LH) terminal D and connector C-10

•  Front side radar sensor (LH)

D

Possible cause

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

•  Body control module (BCM) power supply voltage or body ground malfunction

•  Open circuit in wiring harness between body control module (BCM) and connector C-10

•  Connector C-10 malfunction

•  Body control module (BCM) malfunction

System wiring diagram

am3zzw00027579

Inspection item

•  Body control module (BCM) power supply voltage-related wiring harness and fuse

•  Body control module (BCM) body ground related wiring harness

•  Body control module (BCM) connector

•  Wiring harness between body control module (BCM) terminal 2A and connector C-10

•  Wiring harness between body control module (BCM) terminal 2C and connector C-10

•  Connector C-10

•  Body control module (BCM)