DTC U0100, U0103, U0104, U0115, U0122, U0129, U0151, U0155, U0291 (A/T)

DTC U0100 : F-CAN A Malfunction (TCM - PCM)DTC U0103 : F-CAN A Malfunction (TCM - SBW Shifter Control Module)DTC U0104 : F-CAN Malfunction (TCM - ACC)DTC U0115 : F-CAN D Malfunction (TCM - PCM)DTC U0122 : F-CAN Malfunction (TCM - VSA Modulator-Control Unit)DTC U0129 : F-CAN Malfunction (TCM - Electric Brake Booster)DTC U0151 : F-CAN Malfunction (TCM - SRS)DTC U0155 : F-CAN Malfunction (TCM - Gauge Control Module)DTC U0291 : F-CAN D Malfunction (TCM - SBW Shifter Control Module)

NOTE:

Before you troubleshoot, review the General Troubleshooting Information .
Refer to the DTC shown on the display, then inspect the connectors and terminals based on the instructions.
According to the detected DTC (s), check for the power circuit and the ground circuit of the control unit which cannot communicate with the TCM.
Before disconnecting the SRS unit connector, do the 12 volt battery terminal disconnection procedure , and wait for at least 3 minutes.

DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
U0100 F-CAN A Malfunction (TCM - PCM)
U0103 F-CAN A Malfunction (TCM - SBW Shifter Control Module)
U0104 F-CAN Malfunction (TCM - ACC)
U0115 F-CAN D Malfunction (TCM - PCM)
U0122 F-CAN Malfunction (TCM - VSA Modulator-Control Unit)
U0129 F-CAN Malfunction (TCM - Electric Brake Booster)
U0151 F-CAN Malfunction (TCM - SRS)
U0155 F-CAN Malfunction (TCM - Gauge Control Module)
U0291 F-CAN D Malfunction (TCM - SBW Shifter Control Module)

DTC (A/T)

CAN gateway system DTC check

-1. Turn the vehicle to the ON mode, and wait 6 seconds.

-2. Check for CAN gateway system DTCs with the HDS.

DTC Description	DTC

Are any DTCs indicated?

YES

Go to the troubleshooting for CAN gateway system DTCs .

Go to step 2.

F-CAN circuit communication check (Receiving control unit)
-1. Select the FUNCTION TEST in the CAN gateway with the HDS, then select the F-CAN Bus Connected Unit Check.

F-CAN Bus Connected Unit Check

Does the TCM detect CAN gateway Bus channels A and D?

Bus A is Not Available

Go to step 3.

Bus D is Not Available

Go to step 4.

Bus A and D are Available

Go to step 5.

Open wire check (F-CAN A_H line, F-CAN A_L line) 1

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

-2. Disconnect the following connectors.

CAN gateway 16P connector

TCM connector A (23P)

-3. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	CAN gateway 16P connector: disconnected
	TCM connector A (23P): disconnected
Test point 1	CAN gateway 16P connector (female terminals) No. 3:
Test point 2	TCM connector A (23P) No. 19

Test point 1	CAN gateway 16P connector (female terminals) No. 11:
Test point 2	TCM connector A (23P) No. 18

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

The F-CAN A_H wire and the F-CAN A_L wire are OK. Check for poor connections or loose terminals at the CAN gateway and the TCM. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good TCM , then recheck. If indicated DTC goes away and the TCM was substituted, replace the original TCM .

Repair an open in the F-CAN A_H wire and/or the F-CAN A_L wire between the TCM and the CAN gateway.

Open wire check (F-CAN D_H line, F-CAN D_L line) 1

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

-2. Disconnect the following connectors.

CAN gateway 16P connector

TCM connector A (23P)

-3. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	CAN gateway 16P connector: disconnected
	TCM connector A (23P): disconnected

Test point 1	CAN gateway 16P connector (female terminal) No. 7:
Test point 2	TCM connector A (23P) No. 13

Test point 1	CAN gateway 16P connector (female terminal) No. 15:
Test point 2	TCM connector A (23P) No. 12

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

The F-CAN D_H wire and the F-CAN D_L wire are OK. Check for poor connections or loose terminals at the CAN gateway and the TCM. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good TCM , then recheck. If indicated DTC goes away and the TCM was substituted, replace the original TCM .

Repair an open in the F-CAN D_H line and/or the F-CAN D_L line between the TCM and the CAN gateway.

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.

F-CAN Bus Connected Unit Check

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
U0103	SBW shifter control module	A
U0104	Millimeter wave radar	E
U0115	PCM	D
U0122	VSA modulator-control unit	A, B
U0129	Electric brake booster	A, B
U0151	SRS unit	B
U0155	Gauge control module	C
U0291	SBW shifter control module	D

Is it detected normally?

YES

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

The PCM does not detect CAN gateway Bus channel A. Go to step 6.

U0103: SBW shifter control module is Not Available for Bus A

The SBW shifter control module does not detect CAN gateway Bus channel A. Go to step 6.

U0104: Millimeter wave radar is Not Available for Bus E

The millimeter wave radar does not detect CAN gateway Bus channel E. Go to step 10.

U0115: PCM is Not Available for Bus D

The PCM does not detect CAN gateway Bus channel D. Go to step 9.

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

The VSA modulator-control unit does not detect CAN gateway Bus channel A. Go to step 6.

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

The VSA modulator-control unit does not detect CAN gateway Bus channel B. Go to step 7.

U0129: Electric brake booster is Not Available for Bus A

The electric brake booster does not detect CAN gateway Bus channel A. Go to step 6.

U0129: Electric brake booster is Not Available for Bus B

The electric brake booster does not detect CAN gateway Bus channel B. Go to step 7.

U0151: SRS unit connector is Not Available for Bus B

The SRS unit does not detect CAN gateway Bus channel B. Go to step 7.

U0155: Gauge control module is Not Available for Bus C

The gauge control module does not detect CAN gateway Bus channel C. Go to step 8.

U0291: SBW shifter control module is Not Available for Bus D

The SBW shifter control module does not detect CAN gateway Bus channel D. Go to step 9.

Open wire check (F-CAN A_H line, F-CAN A_L line) 2

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

-2. DTC U0100: 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 16P connector
U0100	PCM connector A (50P)
U0103	SBW shifter control module 20P connector
U0122	VSA modulator-control unit 46P connector

DTC	Connector
U0129	Electric brake booster 26P connector

-4. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	CAN gateway 16P connector: disconnected
	Transmitting control unit connector (s) for indicated DTCs: disconnected

DTC	Test circuit	Test point 1 (Receiving control unit)		Test point 2 (Transmitting control unit)
DTC	Test circuit	Connector	Terminal	Connector	Terminal
U0100	F-CAN A_H	CAN gateway 16P connector (female terminals):	No. 3	PCM connector A (50P)	No. 37
U0100	F-CAN A_L	CAN gateway 16P connector (female terminals):	No. 11	PCM connector A (50P)	No. 36
U0103	F-CAN A_H	CAN gateway 16P connector (female terminals):	No. 3	SBW shifter control module 20P connector	No. 5
U0103	F-CAN A_L	CAN gateway 16P connector (female terminals):	No. 11	SBW shifter control module 20P connector	No. 6
U0122	F-CAN A_H	CAN gateway 16P connector (female terminals):	No. 3	VSA modulator-control unit 46P connector	No. 20
U0122	F-CAN A_L	CAN gateway 16P connector (female terminals):	No. 11	VSA modulator-control unit 46P connector	No. 21
U0129	F-CAN A_H	CAN gateway 16P connector (female terminals):	No. 3	Electric brake booster 26P connector	No. 26
U0129	F-CAN A_L	CAN gateway 16P connector (female terminals):	No. 11	Electric brake booster 26P connector	No. 18

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

The F-CAN A_H wire and the F-CAN A_L wire are OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting.

According to the detected DTC on the following table, substitute or replace the correspond control unit.

DTC	Operation for transmitting control unit
U0100	Check for poor connections or loose terminals at the CAN gateway and the PCM. Substitute a known-good PCM , then recheck. If this DTC goes away and the PCM was substituted, replace the original PCM .
U0103	Check for poor connections or loose terminals at the CAN gateway and the SBW shifter control module. Substitute a known-good SBW shifter control module , then recheck. If this DTC goes away and the SBW shifter control module was substituted, replace the original SBW shifter control module .
U0122	Check for poor connections or loose terminals at the CAN gateway and the VSA modulator-control unit. Replace the VSA modulator-control unit .
U0129	Check for poor connections or loose terminals at the CAN gateway and the electric brake booster. Replace the electric brake booster .

Repair an open in the F-CAN A_H wire and/or the F-CAN A_L wire between the transmitting control unit and the CAN gateway.

Open wire check (F-CAN B_H line, F-CAN B_L line)

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

-2. DTC 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 16P connector

DTC	Connector
U0122	VSA modulator-control unit 46P connector
U0129	Electric brake booster 26P connector
U0151	SRS unit connector A (43P)

-4. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	CAN gateway 16P 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
U0122	F-CAN B_H	CAN gateway 16P connector (female terminal) :	No. 6	VSA modulator-control unit 46P connector	No. 24
U0122	F-CAN B_L	CAN gateway 16P connector (female terminal) :	No. 14	VSA modulator-control unit 46P connector	No. 25
U0129	F-CAN B_H	CAN gateway 16P connector (female terminal) :	No. 6	Electric brake booster 26P connector	No. 19
U0129	F-CAN B_L	CAN gateway 16P connector (female terminal) :	No. 14	Electric brake booster 26P connector	No. 12
U0151	F-CAN B_H	CAN gateway 16P connector (female terminal) :	No. 6	SRS unit connector A (43P)	No. 16
U0151	F-CAN B_L	CAN gateway 16P connector (female terminal) :	No. 14	SRS unit connector A (43P)	No. 17

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

The F-CAN B_H wire and the F-CAN B_L wire are OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting.

According to the detected DTC on the following table, update, substitute, or replace the correspond control unit.

DTC	Operation for transmitting control unit
U0122	Check for poor connections or loose terminals at the CAN gateway and the VSA modulator-control unit. Replace the VSA modulator-control unit .
U0129	Check for poor connections or loose terminals at the CAN gateway and the electric brake booster. Replace the electric brake booster .
U0151	Check for poor connections or loose terminals at the CAN gateway and the SRS unit. Substitute a known-good SRS unit , then recheck. If this DTC goes away and the SRS unit was substituted, replace the original SRS unit .

Repair an open in the F-CAN B_H wire and/or the F-CAN B_L wire between the transmitting control unit and the CAN gateway.

Open wire check (F-CAN C_H line, F-CAN C_L line)

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

-2. According to the detected DTC on the following table, disconnect the transmitting control unit connector (s).

DTC	Connector
-	CAN gateway 16P connector
U0155	Gauge control module connector A (32P)

-3. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	CAN gateway 16P 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
U0155	F-CAN C_H	CAN gateway 16P connector (female terminal) :	No. 5	Gauge control module connector A (32P)	No. 20
U0155	F-CAN C_L	CAN gateway 16P connector (female terminal) :	No. 13	Gauge control module connector A (32P)	No. 21

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

The F-CAN C_H wire and the F-CAN C_L wire are OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting.

According to the detected DTC on the following table, update, substitute, or replace the correspond control unit.

DTC	Operation for transmitting control unit
U0155	Check for poor connections or loose terminals at the CAN gateway and the gauge control module. Substitute a known-good gauge control module , then recheck. If this DTC goes away and the gauge control module was substituted, replace the original gauge control module .

Repair an open in the F-CAN C_H wire and/or the F-CAN C_L wire between the transmitting control unit and the CAN gateway.

Open wire check (F-CAN D_H line, F-CAN D_L line) 2

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

-2. DTC U0115: 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 16P connector
U0115	PCM connector A (50P)
U0291	SBW shifter control module 20P connector

-4. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	CAN gateway 16P 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
U0115	F-CAN D_H	CAN gateway 16P connector (female terminal) :	No. 7	PCM connector A (50P)	No. 39
U0115	F-CAN D_L	CAN gateway 16P connector (female terminal) :	No. 15	PCM connector A (50P)	No. 38

DTC	Circuit name	Test point 1 (Receiving control unit)		Test point 2 (Transmitting control unit)
DTC	Circuit name	Connector	Terminal	Connector	Terminal
U0291	F-CAN D_H	CAN gateway 16P connector (female terminal) :	No. 7	SBW shifter control module 20P connector	No. 9
U0291	F-CAN D_L	CAN gateway 16P connector (female terminal) :	No. 15	SBW shifter control module 20P connector	No. 10

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

The F-CAN D_H wire and the F-CAN D_L wire are OK.

Check for any authorized service information related to the DTCs or symptoms you are troubleshooting.

According to the detected DTC on the following table, update, substitute, or replace the correspond control unit.

DTC	Operation for transmitting control unit
U0115	Check for poor connections or loose terminals at the CAN gateway and the PCM. Substitute a known-good PCM , then recheck. If this DTC goes away and the PCM was substituted, replace the original PCM .
U0291	Check for poor connections or loose terminals at the CAN gateway and the SBW shifter control module. Substitute a known-good SBW shifter control module , then recheck. If this DTC goes away and the SBW shifter control module was substituted, replace the original SBW shifter control module .

Repair an open in the F-CAN D_H wire and/or the F-CAN D_L wire between the transmitting control unit and the CAN gateway.

Open wire check (F-CAN E_H line, F-CAN E_L line)

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

-2. According to the detected DTC on the following table, disconnect the transmitting control unit connector (s).

DTC	Connector
-	CAN gateway 16P connector
U0104	Millimeter wave radar 8P connector

-3. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	CAN gateway 16P 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
U0104	F-CAN E_H	CAN gateway 16P connector (female terminal) :	No. 16	Millimeter wave radar 8P connector	No. 7
U0104	F-CAN E_L	CAN gateway 16P connector (female terminal) :	No. 8	Millimeter wave radar 8P connector	No. 6

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

The F-CAN E_H wire and the F-CAN E_L wire are OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting.

According to the detected DTC on the following table, update, substitute, or replace the correspond control unit.

DTC	Operation for transmitting control unit
U0104	Check for poor connections or loose terminals at the CAN gateway and the millimeter wave radar. Substitute a known-good millimeter wave radar , then recheck. If this DTC goes away and the millimeter wave radar was substituted, replace the original millimeter wave radar .

Repair an open in the F-CAN E_H wire and/or the F-CAN E_L wire between the transmitting control unit and the CAN gateway.