DTC U0100-F1, U0101-F1, U0122-F1, U0129-F1, U0131-F1, U0151-F1, U0155-F1 (Millimeter Wave Radar) (2017 2018 2019)

DTC U0100-F1  : Lost Communication With The PCM (PGM-FI System) (Multipurpose Camera Unit)

DTC U0101-F1  : Lost Communication With The PCM/TCM (Multipurpose Camera Unit)

DTC U0122-F1  : Lost Communication With The VSA Modulator-Control Unit (Multipurpose Camera Unit)

DTC U0129-F1  : Lost Communication With The Electric Servo Brake Control Unit/Electric Brake Booster Control Unit (Multipurpose Camera Unit)

DTC U0131-F1  : Lost Communication With The EPS Control Unit (Multipurpose Camera Unit)

DTC U0151-F1  : Lost Communication With The SRS Unit (Multipurpose Camera Unit)

DTC U0155-F1  : Lost Communication With The Gauge Control Module (Multipurpose Camera Unit)

NOTE: 

• Before you troubleshoot, review the general troubleshooting information .
• If the transmitting control unit is malfunctioning, a DTC may be recorded. According to the recorded DTC, inspect the power circuits and ground circuits of the units with which the multipurpose camera unit does not communicate.
• The functions of the integrated driver support system that will be temporarily canceled when this DTC is recorded can be confirmed with the DTC troubleshooting index .

DTC (IDAS)

1. CAN gateway system DTC check

   -1. Turn the vehicle to the ON mode.

   -2. 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

   DTC Description	DTC
   U3000-49 CAN Gateway Internal Failure

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

   YES 

   Go to the indicated DTCs troubleshooting .

   NO 

   Go to step 2.

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 millimeter wave radar detect the CAN gateway Bus channels B?

   Bus B is Not Available

   Go to step 3.

   Bus B is Available

   Go to step 4.

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

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

   -2. Disconnect the following connectors.

   CAN gateway 12P connector

   Multipurpose camera unit 12P connector

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

   Test condition	Vehicle OFF (LOCK) mode
   	CAN gateway 12P connector: disconnected
   	Multipurpose camera unit 12P connector: disconnected
   Test point 1	CAN gateway 12P connector (female terminals) No. 5:
   Test point 2	Multipurpose camera unit 12P connector No. 5

   Test point 1	CAN gateway 12P connector (female terminals) No. 12:
   Test point 2	Multipurpose camera unit 12P connector No. 11

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

   Is there continuity?

   YES 

   Check for poor connections or loose terminals at the CAN gateway and the multipurpose camera unit. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the multipurpose camera unit .

   NO 

   Repair an open in the F-CAN B_H wire or the F-CAN B_L wire between the multipurpose camera unit and the CAN gateway.

4. 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 getaway Bus channel(s) at normal
   U0100-F1	PCM	A, B
   U0101-F1	TCM	A
   U0122-F1	VSA modulator-control unit	A, B
   U0129-F1	Electric brake booster	A, B
   U0131-F1	EPS control unit	B
   U0151-F1	SRS unit	B
   U0155-F1	Gauge control module	A

   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-F1: PCM is Not Available for Bus A

   Go to step 5.

   U0100-F1: PCM is Not Available for Bus B

   Go to step 6.

   U0101-F1: TCM is Not Available for Bus A

   Go to step 5.

   U0122-F1: VSA modulator-control unit is Not Available for Bus A

   Go to step 5.

   U0122-F1: VSA modulator-control unit is Not Available for Bus B

   Go to step 6.

   U0129-F1: Electric brake booster is Not Available for Bus A

   Go to step 5.

   U0129-F1: Electric brake booster is Not Available for Bus B

   Go to step 6.

   U0131-F1: EPS control unit is Not Available for Bus B

   Go to step 6.

   U0151-F1: SRS unit is Not Available for Bus B

   Go to step 6.

   U0155-F1: Gauge control module is Not Available for Bus A

   Go to step 5.

5. Open wire check (F-CAN A_H line, F-CAN A_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 12P connector
   U0100-F1	PCM connector A (50P)

   DTC	Connector
   U0101-F1	TCM 50P connector
   U0122-F1	VSA modulator-control unit 46P connector
   U0129-F1	Electric brake booster 26P connector
   U0155-F1	Gauge control module connector A (32P)

   NOTE:  Before disconnecting the PCM connector, jump the SCS line with the HDS, and wait more than 1 minute.

   -3. 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)
   		Connector	Terminal	Connector	Terminal
   U0100-F1	F-CAN A_H	CAN gateway 12P connector (female terminals):	No. 3	PCM connector A (50P)	No. 37
   	F-CAN A_L		No. 9		No. 36
   U0101-F1	F-CAN A_H	CAN gateway 12P connector (female terminals):	No. 3	TCM 50P connector	No. 3
   	F-CAN A_L		No. 9		No. 11
   U0122-F1	F-CAN A_H	CAN gateway 12P connector (female terminals):	No. 3	VSA modulator-control unit 46P connector	No. 40
   	F-CAN A_L		No. 9		No. 28
   U0129-F1	F-CAN A_H	CAN gateway 12P connector (female terminals):	No. 3	Electric brake booster 26P connector	No. 26
   	F-CAN A_L		No. 9		No. 18
   U0155-F1	F-CAN A_H	CAN gateway 12P connector (female terminals):	No. 3	Gauge control module connector A (32P)	No. 19
   	F-CAN A_L		No. 9		No. 20

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

   Is there continuity?

   YES 

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

   DTC	Operation for transmitting control unit
   U0100-F1	Check for poor connections or loose terminals at the millimeter wave radar and the PCM. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a good-known PCM , then recheck. If they are OK, replace the original PCM .
   U0101-F1	Check for poor connections or loose terminals at the millimeter wave radar and the TCM. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a good-known TCM , then recheck. If they are OK, replace the original TCM .
   U0122-F1	Check for poor connections or loose terminals at the millimeter wave radar and the VSA modulator-control unit. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the VSA modulator-control unit .

   DTC	Operation for transmitting control unit
   U0129-F1	Check for poor connections or loose terminals at the millimeter wave radar and the electric brake booster. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the electric brake booster .
   U0155-F1	Check for poor connections or loose terminals at the millimeter wave radar and the gauge control module. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good gauge control module , then recheck. If they are OK, replace the original gauge control module .

   NO 

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

6. Open wire check (F-CAN B_H line, F-CAN B_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 12P connector
   U0100-F1	PCM connector A (50P)
   U0122-F1	VSA modulator-control unit 46P connector
   U0129-F1	Electric brake booster 26P connector
   U0131-F1	EPS control unit connector B (6P)
   U0151-F1	SRS unit connector A (39P)

   NOTE:  Before disconnecting the PCM connector, jump the SCS line with the HDS, and wait more than 1 minute.

   -3. 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)
   		Connector	Terminal	Connector	Terminal
   U0100-F1	F-CAN B_H	CAN gateway 12P connector (female terminals):	No. 12	PCM connector A (50P)	No. 39
   	F-CAN B_L		No. 5		No. 38
   U0122-F1	F-CAN B_H	CAN gateway 12P connector (female terminals):	No. 12	VSA modulator-control unit 46P connector	No. 46
   	F-CAN B_L		No. 5		No. 34
   U0129-F1	F-CAN B_H	CAN gateway 12P connector (female terminals):	No. 12	Electric brake booster 26P connector	No. 19
   	F-CAN B_L		No. 5		No. 12
   U0131-F1	F-CAN B_H	CAN gateway 12P connector (female terminals):	No. 12	EPS control unit connector B (6P)	No. 3
   	F-CAN B_L		No. 5		No. 1
   U0151-F1	F-CAN B_H	CAN gateway 12P connector (female terminals):	No. 12	SRS unit connector A (39P)	No. 34
   	F-CAN B_L		No. 5		No. 35

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

   Is there continuity?

   YES 

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

   DTC	Operation for transmitting control unit
   U0100-F1	Check for poor connections or loose terminals at the millimeter wave radar and the PCM. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a good-known PCM , then recheck. If they are OK, replace the original PCM .
   U0122-F1	Check for poor connections or loose terminals at the millimeter wave radar and the VSA modulator-control unit. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the VSA modulator-control unit .
   U0129-F1	Check for poor connections or loose terminals at the millimeter wave radar and the electric brake booster. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the electric brake booster .
   U0131-F1	Check for poor connections or loose terminals at the multipurpose camera unit and the EPS control unit. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the EPS motor/control unit .
   U0151-F1	Check for poor connections or loose terminals at the millimeter wave radar and the SRS unit. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the SRS unit .

   NO 

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