PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION [MULTIPLEX COMMUNICATION SYSTEM]


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HS-CAN


System Wiring Diagram

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PCM

1.  Inspect the display of DTC U0101, U0129, U0155 and/or U0300 using the M-MDS.

(See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

2.  Referring to the following table, determine the malfunctioning part of the CAN system.

×: Normal
—: Communication error

Module

Communication status

Malfunction location

TCM

DSC/RSC HU/CM

Instrument cluster

PCM
•  Wiring harness A
•  PCM
×
×
•  Wiring harness B
•  Wiring harness C
•  TCM
×
•  Wiring harness D
×
×
•  Wiring harness E
•  DSC/RSC HU/CM
×
×
•  Wiring harness F
•  BCM
•  Wiring harness H
•  Wiring harness K
•  Wiring harness L
•  Wiring harness M
•  Wiring harness N
•  Wiring harness O
•  Instrument cluster


TCM

1.  Inspect the display of DTC U0100, U0121, U0140 and/or U0415 using the M-MDS. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

2.  Referring to the following table, determine the malfunctioning part of the CAN system.

×: Normal
—: Communication error

Module

Communication status

Malfunction location

PCM

DSC/RSC HU/CM

BCM

TCM
•  Wiring harness B
•  Wiring harness C
•  TCM
×
×
•  Wiring harness A
•  PCM
×
•  Wiring harness D
×
×
•  Wiring harness E
•  DSC/RSC HU/CM
×
×
•  Wiring harness F
•  BCM


DSC/RSC HU/CM

1.  Inspect the display of DTC U0100, U0140, U0155 and/or U2023 using the M-MDS. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

Caution
•  You may want to check which unit is malfunctioning according to Freeze Frame Data. "Electrical" > "IC Service Function" > "Freeze Frame Data".This function is supported on IDS, not PDS.
•  DTC U2023 may not be cleared during engine starting even if DTC clearing is done using the M-MDS. When clearing DTC U2023, execute with the ignition switch in the ON position (Engine off).

2.  Referring to the following table, determine the malfunctioning part of the CAN system.

×: Normal
—: Communication error

Module

Communication status

Malfunction location

PCM

BCM

Instrument cluster

DSC/RSC HU/CM
•  Wiring harness E
•  DSC/RSC HU/CM
×
×
•  Wiring harness A
•  Wiring harness D
•  PCM
×
•  Wiring harness F
•  BCM
×
×
•  Wiring harness H
•  Wiring harness K
•  Wiring harness L
•  Wiring harness M
•  Wiring harness N
•  Wiring harness O
•  Instrument cluster


BCM

Note
•  There is no DTC in the BCM that determines signal quality between it and the other module. Due to this, determine the malfunction location using the DTC on the other module side.

1.  Referring to the following table, determine the malfunctioning part of the CAN system.

×: Normal
—: Communication error

Module

Communication status

Malfunction location

DSC/RSC HU/CM

Keyless control module

PLG control module

Instrument cluster

BCM
•  BCM
•  Wiring harness F
•  Wiring harness G
•  Wiring harness H
×
×
×
•  Wiring harness E
•  Wiring harness F
•  DSC/RSC HU/CM
×
×
×
•  Wiring harness G
•  Keyless control module
×
×
×
•  Wiring harness J
•  PLG control module
×
×
•  Wiring harness H
•  BCM
×
×
×
•  Wiring harness K
•  Wiring harness L
•  Wiring harness M
•  Wiring harness N
•  Wiring harness O
•  Instrument cluster


AWD Control Module

1.  Inspect the display of DTC U0100, U0101, U0121 and/or U0155 using the M-MDS. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

2.  Referring to the following table, determine the malfunctioning part of the CAN system.

×: Normal
—: Communication error

Module

Communication status

Malfunction location

PCM

TCM

DSC/RSC HU/CM

Instrument cluster

AWD control module
•  Wiring harness I
•  AWD control module
•  BCM
×
×
×
•  Wiring harness A
•  PCM
×
×
×
•  Wiring harness B
•  Wiring harness C
•  TCM
×
×
•  Wiring harness D
•  Wiring harness F
×
×
×
•  Wiring harness E
•  DSC/RSC HU/CM
×
•  Wiring harness F
•  BCM
×
×
×
•  Wiring harness H
•  Wiring harness K
•  Wiring harness L
•  Wiring harness M
•  Wiring harness N
•  Wiring harness O
•  Instrument cluster


PLG Control Module

1.  Inspect the display of DTC U0100, U0101, U140, U0155 and/or U0214 using the M-MDS.

(See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

2.  Referring to the following table, determine the malfunctioning part of the CAN system.

×: Normal
—: Communication error

Module

Communication status

Malfunction location

PCM

TCM

BCM

Keyless control module

Instrument cluster

PLG control module
•  Wiring harness J
•  PLG control module
×
×
×
×
•  Wiring harness A
•  PCM
×
×
×
×
•  Wiring harness B
•  Wiring harness C
•  TCM
×
×
×
•  Wiring harness F
•  Wiring harness D
×
•  Wiring harness H
•  BCM
×
×
×
×
•  Wiring harness G
•  Keyless control module
×
×
×
×
•  Wiring harness K
•  Wiring harness L
•  Wiring harness M
•  Wiring harness N
•  Wiring harness O
•  Instrument cluster


SAS Control Module

1.  Inspect the display of DTC U0100 and/or U0155 using the M-MDS.

(See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

2.  Referring to the following table, determine the malfunctioning part of the CAN system.

×: Normal
—: Communication error

Module

Communication status

Malfunction location

PCM

Instrument cluster

SAS control module
•  Wiring harness T
•  SAS control module
×
•  Wiring harness A
•  Wiring harness D
•  Wiring harness F
•  Wiring harness H
•  Wiring harness K
•  Wiring harness L
•  Wiring harness M
•  Wiring harness N
•  BCM
•  PCM
×
•  Wiring harness P
•  Instrument cluster


Keyless Control Module

1.  Inspect the display of DTC U0100, U0140, U0323 and/or U2023 using the M-MDS.

(See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

2.  Referring to the following table, determine the malfunctioning part of the CAN system.

×: Normal
—: Communication error

Module

Communication status

Malfunction location

PCM

BCM

Instrument cluster

Keyless control module
•  Wiring harness G
•  Keyless control module
×
×
•  Wiring harness A
•  Wiring harness D
•  Wiring harness F
•  PCM
×
×
•  Wiring harness H
•  Wiring harness K
•  Wiring harness L
•  Wiring harness M
•  Wiring harness N
•  Wiring harness O
•  Instrument cluster


Instrument Cluster

1.  Inspect the display of DTC U0100, U0101, U0114, U0121, U0140, U0151 and/or U0214 using the M-MDS. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

2.  Referring to the following table, determine the malfunctioning part of the CAN system.

×: Normal
—: Communication error

Module

Communication status

Malfunction location

PCM

TCM

DSC/RSC HU/CM

BCM

AWD control module

SAS control module

Keyless control module

Instrument cluster
•  Wiring harness O
•  Instrument cluster
×
×
×
×
×
×
•  Wiring harness A
•  PCM
×
×
×
×
×
•  Wiring harness D
×
×
×
×
×
×
•  Wiring harness B
•  Wiring harness C
•  TCM
×
×
×
×
•  Wiring harness F
×
×
×
×
×
×
•  Wiring harness E
•  DSC/RSC HU/CM
×
×
×
×
×
×
•  Wiring harness I
•  AWD control module
×
•  Wiring harness H
•  Wiring harness K
•  Wiring harness L
•  Wiring harness M
•  Wiring harness N
×
×
×
×
×
×
•  Wiring harness P
•  SAS control module
×
×
×
×
×
×
•  Wiring harness G
•  Keyless control module


MS-CAN


System Wiring Diagram

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Information display

1.  Inspect the display of DTC U0181/U0184 using the input/output check mode. (See INFORMATION DISPLAY INPUT/OUTPUT CHECK MODE.)

2.  Referring to the following table, determine the malfunctioning part of the CAN system.

—: Communication error

Module

Communication status

Malfunction location

Audio unit

Information display
•  Wiring harness A
•  Wiring harness C
•  Information display


Repair Procedure

1.  Inspect the connector of malfunctioning module.

•  If there is any malfunction, repair or replace the connector.

2.  Inspect the malfunctioning wiring harnesses as follow:

•  If there is any malfunction, repair or replace the wiring harnesses.
•  If there is no malfunction, replace the malfunctioning module.
―  Short to GND
―  Short to power supply
―  Twisted pair short each other
―  Open circuit

3.  Make sure to reconnect all disconnected connectors.

4.  Clear the CAN system related DTCs using the M-MDS.

5.  Verify if the CAN system related DTCs are displayed using the M-MDS.

•  If the same following DTCs are present, replace the malfunctioning module.
―  U0073 (TCM, DSC/RSC HU/CM, BCM, AWD control module, SAS control module, keyless control module, instrument cluster)
―  U2516 (Information display)
―  16:Er12 (Audio unit)
•  If other DTC is present, perform the appropriate DTC inspection. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)