DTC Troubleshooting: U0100, U0101, U0104, U0114, U0122, U0128, U0131, U0151, U129C (Gauge Control Module)

DTC Troubleshooting: U0100, U0101, U0104, U0114, U0122, U0128, U0131, U0151, U129C

DTC U0100: Gauge control module lost communication with ENG/AT
DTC U0101: Gauge control module lost communication with AT
DTC U0104: Gauge Control Module Lost Communication With Driving Support System Control Unit
DTC U0114: Gauge control module lost communication with All Wheel Drive Control Module
DTC U0122: Gauge control module lost communication with VSA modulator-control unit
DTC U0128: Gauge control module lost communication with EPB
DTC U0131: Gauge control module lost communication with EPS Unit
DTC U0151: Gauge control module lost communication with SRS unit
DTC U129C: Gauge control module lost communication with multi purpose camera unit

NOTE:

	If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.
	Refer to the DTC code shown on the display, and then inspect the connectors and terminals based on the instructions in the table below.
	The DTC may be stored due to the grounding failure or the power source failure at the transmitting control unit (the grounding inspection and the power source inspection on each control unit are required prior to this checking process).

DTC Description	DTC
U0100 Gauge control module lost communication with ENG/AT
U0101 Gauge control module lost communication with AT
U0104 Gauge Control Module Lost Communication With Driving Support System Control Unit
U0114 Gauge control module lost communication with All Wheel Drive Control Module
U0122 Gauge control module lost communication with VSA modulator-control unit
U0128 Gauge control module lost communication with EPB
U0131 Gauge control module lost communication with EPS Unit
U0151 Gauge control module lost communication with SRS unit
U129C Gauge control module lost communication with multi purpose camera unit

Problem verification:

Problem verification

?1.	Clear the DTCs with the HDS.

?2.	Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

?3.	Wait for at least 6 seconds.

?4.

Check for DTCs with the HDS.

DTC Description	DTC
U0100 Gauge control module lost communication with ENG/AT
U0101 Gauge control module lost communication with AT
U0104 Gauge Control Module Lost Communication With Driving Support System Control Unit
U0114 Gauge control module lost communication with All Wheel Drive Control Module
U0122 Gauge control module lost communication with VSA modulator-control unit
U0128 Gauge control module lost communication with EPB
U0131 Gauge control module lost communication with EPS Unit
U0151 Gauge control module lost communication with SRS unit
U129C Gauge control module lost communication with multi purpose camera unit

Are any DTCs indicated?


	YES: with CAN gateway

Go to step 2.


	YES: without CAN gateway

Go to step 8.


	NO

Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals.?

CAN gateway system DTC check:

CAN gateway system DTC check

?1.

Check for CAN gateway system DTCs with the HDS.

DTC Description	DTC
U0029-00 CAN Gateway F-CAN ch A Bus Off
U0047-00 CAN Gateway F-CAN ch B Bus Off
U3000-49 CAN Gateway Internal Failure

Is DTC U0029-00, U0047-00, and/or U3000-49 indicated?


	YES

Go to the troubleshooting for CAN gateway system DTC(s).?


	NO

Go to step 3.

F-CAN circuit communication check:

F-CAN circuit communication check

?1.	Select the FUNCTION TEST in the CAN gateway with the HDS, then select the F-CAN Bus Connected Unit Check.

Does the gauge control module detect the CAN gateway Bus channels A?


	Bus A is Not Available

Go to step 4.


	Bus A is Available

Go to step 5.

Open wire check (F-CAN A lines):

Open wire check (F-CAN A lines)

?1.	Turn the vehicle to the OFF (LOCK) mode.

?2.

Disconnect the following connectors.

CAN gateway 12P connector
Gauge control module connector A (32P)

?3.

Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode CAN gateway 12P connector: disconnected Gauge control module connector A (32P): disconnected
Test point 1	CAN gateway 12P connector (female terminals) No. 3:
Test point 2	Gauge control module connector A (32P) No. 19

Test point 1	CAN gateway 12P connector (female terminals) No. 9:
Test point 2	Gauge control module connector A (32P) No. 20

Is there continuity?


	YES

The F-CAN A_H and F-CAN A_L wires are OK. Replace the gauge control module.?


	NO

Repair an open in F-CAN A_H or F-CAN A_L wire.?

F-CAN circuit communication check (Transmitting control unit):

F-CAN circuit communication check (Transmitting control unit)

?1.	Select the FUNCTION TEST in the CAN gateway with the HDS, then select the F-CAN Bus Connected Unit Check.

?2.

According to the detected DTC on the following table, make sure that the transmitting control unit detects the CAN gateway Bus channel(s) normally.

DTC	Transmitting control unit	Detected CAN gateway Bus channel(s) at normal
U0100	PCM	A, B
U0101	TCM	A
U0104	Millimeter wave radar	B
U0114	Real time AWD control unit	B
U0122	VSA modulator-control unit	A, B
U0128	VSA modulator-control unit	A, B
U0131	EPS control unit	B
U0151	SRS unit	B
U129C	Multipurpose camera unit	B

Is it detected normally?


	Detected normal

Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the transmitting control unit and the CAN gateway.?


	U0100: PCM is Not Available for Bus A

Go to step 6.


	U0100: PCM is Not Available for Bus B

Go to step 7.


	U0101: TCM is Not Available for Bus A

Go to step 6.


	U0104: Millimeter wave radar is Not Available for Bus B

Go to step 7.


	U0114: Real time AWD control unit is Not Available for Bus B

Go to step 7.


	U0122: VSA modulator-control unit is Not Available for Bus A

Go to step 6.


	U0122: VSA modulator-control unit is Not Available for Bus B

Go to step 7.


	U0128: VSA modulator-control unit is Not Available for Bus A

Go to step 6.


	U0128: VSA modulator-control unit is Not Available for Bus B

Go to step 7.


	U0131: EPS control unit is Not Available for Bus B

Go to step 7.


	U0151: SRS unit is Not Available for Bus B

Go to step 7.


	U129C: Multipurpose camera unit is Not Available for Bus B

Go to step 7.

Open wire check (F-CAN A lines):

Open wire check (F-CAN A lines)

?1.	Turn the vehicle to the OFF (LOCK) mode.

?2.	U0100, U0101: Jump the SCS line with the HDS, and wait more than 1 minute.

?3.

According to the detected DTC on the following table, disconnect the transmitting control unit connector(s).

DTC	Connector
-	CAN gateway 12P connector
U0100	PCM connector A (50P)
U0101	TCM 50P connector
U0122	VSA modulator-control unit 46P connector
U0128	VSA modulator-control unit 46P connector

?4.

Check for continuity between test points 1 and 2.

Test condition

Vehicle OFF (LOCK) mode
CAN gateway 12P connector: disconnected
Transmitting control unit connector(s) for indicated DTCs: disconnected

DTC	Circuit name	Test point 1 (Receiving control unit)		Test point 2 (Transmitting control unit)
DTC	Circuit name	Connector	Terminal	Connector	Terminal
U0100	F-CAN A_H	CAN gateway 12P connector (female terminals):	No. 3	PCM connector A (50P)	No. 37
U0100	F-CAN A_L	CAN gateway 12P connector (female terminals):	No. 9	PCM connector A (50P)	No. 36
U0101	F-CAN A_H	CAN gateway 12P connector (female terminals):	No. 3	TCM 50P connector	No. 3
U0101	F-CAN A_L	CAN gateway 12P connector (female terminals):	No. 9	TCM 50P connector	No. 11
U0122	F-CAN A_H	CAN gateway 12P connector (female terminals):	No. 3	VSA modulator-control unit 46P connector	No. 40
U0122	F-CAN A_L	CAN gateway 12P connector (female terminals):	No. 9	VSA modulator-control unit 46P connector	No. 28
U0128	F-CAN A_H	CAN gateway 12P connector (female terminals):	No. 3	VSA modulator-control unit 46P connector	No. 40
U0128	F-CAN A_L	CAN gateway 12P connector (female terminals):	No. 9	VSA modulator-control unit 46P connector	No. 28

Is there continuity?


	YES

The F-CAN A_H wire and the F-CAN A_L wire are OK.

According to the detected DTC on the following table replace the correspond control unit.?

DTC	Operation for transmitting control unit
U0100	PCM
U0101	TCM
U0122	VSA modulator-control unit
U0128	VSA modulator-control unit


	NO

Repair an open in F-CAN A_H or F-CAN A_L wire.?

Open wire check (F-CAN B lines):

Open wire check (F-CAN B lines)

?1.	Turn the vehicle to the OFF (LOCK) mode.

?2.	U0100: Jump the SCS line with the HDS, and wait more than 1 minute. U0151: Do the 12 volt battery terminal disconnection procedure, and wait for at least 3 minutes.

?3.

According to the detected DTC on the following table, disconnect the transmitting control unit connector(s).

DTC	Connector
-	CAN gateway 12P connector
U0100	PCM connector A (50P)
U0104	Millimeter wave radar 8P connector
U0114	Real time AWD control unit 24P connector
U0122	VSA modulator-control unit 46P connector
U0128	VSA modulator-control unit 46P connector
U0131	EPS control unit connector B (6P)
U0151	SRS unit connector A (39P)
U129C	Multipurpose camera unit 12P connector

?4.

Check for continuity between test points 1 and 2.

Test condition

Vehicle OFF (LOCK) mode
CAN gateway 12P connector: disconnected
Transmitting control unit connector(s) for indicated DTCs: disconnected

DTC	Circuit name	Test point 1 (Receiving control unit)		Test point 2 (Transmitting control unit)
DTC	Circuit name	Connector	Terminal	Connector	Terminal
U0100	F-CAN B_H	CAN gateway 12P connector (female terminals):	No. 12	PCM connector A (50P)	No. 39
U0100	F-CAN B_L	CAN gateway 12P connector (female terminals):	No. 5	PCM connector A (50P)	No. 38
U0104	F-CAN B_H	CAN gateway 12P connector (female terminals):	No. 12	Millimeter wave radar 8P connector	No. 7
U0104	F-CAN B_L	CAN gateway 12P connector (female terminals):	No. 5	Millimeter wave radar 8P connector	No. 6
U0114	F-CAN B_H	CAN gateway 12P connector (female terminals):	No. 12	Real time AWD control unit 24P connector	No. 14
U0114	F-CAN B_L	CAN gateway 12P connector (female terminals):	No. 5	Real time AWD control unit 24P connector	No. 24
U0122	F-CAN B_H	CAN gateway 12P connector (female terminals):	No. 12	VSA modulator-control unit 46P connector	No. 46
U0122	F-CAN B_L	CAN gateway 12P connector (female terminals):	No. 5	VSA modulator-control unit 46P connector	No. 34
U0128	F-CAN B_H	CAN gateway 12P connector (female terminals):	No. 12	VSA modulator-control unit 46P connector	No. 46
U0128	F-CAN B_L	CAN gateway 12P connector (female terminals):	No. 5	VSA modulator-control unit 46P connector	No. 34
U0131	F-CAN B_H	CAN gateway 12P connector (female terminals):	No. 12	EPS control unit connector B (6P)	No. 3
U0131	F-CAN B_L	CAN gateway 12P connector (female terminals):	No. 5	EPS control unit connector B (6P)	No. 1
U0151	F-CAN B_H	CAN gateway 12P connector (female terminals):	No. 12	SRS unit connector A (39P)	No. 34
U0151	F-CAN B_L	CAN gateway 12P connector (female terminals):	No. 5	SRS unit connector A (39P)	No. 35
U129C	F-CAN B_H	CAN gateway 12P connector (female terminals):	No. 12	Multipurpose camera unit 12P connector	No. 11
U129C	F-CAN B_L	CAN gateway 12P connector (female terminals):	No. 5	Multipurpose camera unit 12P connector	No. 5

Is there continuity?


	YES

The F-CAN B_H wire and the F-CAN B_L wire are OK.

According to the detected DTC on the following table replace the correspond control unit.?

DTC	Operation for transmitting control unit
U0100	PCM
U0104	Millimeter wave radar
U0114	Real time AWD control unit
U0122	VSA modulator-control unit
U0128	VSA modulator-control unit
U0131	EPS control unit
U0151	SRS unit
U129C	Multipurpose camera unit


	NO

Repair an open in F-CAN B_H or F-CAN B_L wire.?

Open wire check (F-CAN lines):

Open wire check (F-CAN lines)

?1.	Turn the vehicle to the OFF (LOCK) mode.

?2.	U0100: Jump the SCS line with the HDS, and wait more than 1 minute. U0151: Do the 12 volt battery terminal disconnection procedure, and wait for at least 3 minutes.

?3.

According to the detected DTC on the following table, disconnect the transmitting control unit connector(s).

DTC	Connector
-	CAN gateway 12P connector
U0100	PCM connector A (51P)
U0114	Real time AWD control unit 24P connector
U0122	VSA modulator-control unit 46P connector
U0128	VSA modulator-control unit 46P connector
U0131	EPS control unit connector B (6P)
U0151	SRS unit connector A (39P)

?4.

Check for continuity between test points 1 and 2.

Test condition

Vehicle OFF (LOCK) mode
Gauge control module connector A (32P): disconnected
Transmitting control unit connector(s) for indicated DTCs: disconnected

DTC	Circuit name	Test point 1 (Receiving control unit)		Test point 2 (Transmitting control unit)
DTC	Circuit name	Connector	Terminal	Connector	Terminal
U0100	F-CAN_H	Gauge control module connector A (32P)	No. 19	PCM connector A (51P)	No. 2
U0100	F-CAN_L	Gauge control module connector A (32P)	No. 20	PCM connector A (51P)	No. 1
U0114	F-CAN_H	Gauge control module connector A (32P)	No. 19	Real time AWD control unit 24P connector	No. 14
U0114	F-CAN_L	Gauge control module connector A (32P)	No. 20	Real time AWD control unit 24P connector	No. 24
U0122	F-CAN_H	Gauge control module connector A (32P)	No. 19	VSA modulator-control unit 46P connector	No. 40
U0122	F-CAN_L	Gauge control module connector A (32P)	No. 20	VSA modulator-control unit 46P connector	No. 28
U0128	F-CAN_H	Gauge control module connector A (32P)	No. 19	VSA modulator-control unit 46P connector	No. 40
U0128	F-CAN_L	Gauge control module connector A (32P)	No. 20	VSA modulator-control unit 46P connector	No. 28
U0131	F-CAN_H	Gauge control module connector A (32P)	No. 19	EPS control unit connector B (6P)	No. 3
U0131	F-CAN_L	Gauge control module connector A (32P)	No. 20	EPS control unit connector B (6P)	No. 1
U0151	F-CAN_H	Gauge control module connector A (32P)	No. 19	SRS unit connector A (39P)	No. 34
U0151	F-CAN_L	Gauge control module connector A (32P)	No. 20	SRS unit connector A (39P)	No. 35

Is there continuity?


	YES

The F-CAN_H wire and the F-CAN_L wire are OK.

According to the detected DTC on the following table replace the correspond control unit.?

DTC	Operation for transmitting control unit
U0100	PCM
U0114	Real time AWD control unit
U0122	VSA modulator-control unit
U0128	VSA modulator-control unit
U0131	EPS control unit
U0151	SRS unit


	NO

Repair an open in F-CAN_H or F-CAN_L wire.?