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

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 (Gauge Control Module)

1. 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.

2. 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.

3. 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.

   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.

4. 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 (12P connector type) CAN gateway 16P connector (16P connector type) Gauge control module connector A (32P)

   -3. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode CAN gateway 12P connector (12P connector type): disconnected CAN gateway 16P connector (16P connector type): disconnected Gauge control module connector A (32P): disconnected
   Test point 1	CAN gateway 12P connector (female terminals) (12P connector type) No. 3: CAN gateway 16P connector (female terminals) (16P connector type) No. 3:
   Test point 2	Gauge control module connector A (32P) No. 19

   Test point 1	CAN gateway 12P connector (female terminals) (12P connector type) No. 9: CAN gateway 16P connector (female terminals) (16P connector type) No. 11:
   Test point 2	Gauge control module connector A (32P) No. 20

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

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

   Is there 1.0 Ω or less?

   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.

5. 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, 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.

6. 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.

   SCS short

   -3. According to the detected DTC on the following table, disconnect the transmitting control unit connector(s).

   DTC	Connector
   -	CAN gateway 12P connector (12P connector type) CAN gateway 16P connector (16P connector type)
   U0100	PCM connector A (50P)
   U0101	TCM 50P connector
   U0122	VSA modulator-control unit 46P connector
   U0128	VSA modulator-control unit 46P connector

   -4. Measure the resistance between test points 1 and 2.

   Test condition

   Vehicle OFF (LOCK) mode CAN gateway 12P connector (12P connector type): disconnected CAN gateway 16P connector (16P connector type): disconnected Transmitting control unit connector(s) for indicated DTCs: disconnected

   CAN gateway 12P connector type 

   DTC	Circuit name	Test point 1 (Receiving control unit)		Test point 2 (Transmitting control unit)
   		Connector	Terminal	Connector	Terminal
   U0100	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	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	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
   U0128	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

   CAN gateway 16P connector type 

   DTC	Circuit name	Test point 1 (Receiving control unit)		Test point 2 (Transmitting control unit)
   		Connector	Terminal	Connector	Terminal
   U0100	F-CAN A_H	CAN gateway 16P connector (female terminals):	No. 3	PCM connector A (50P)	No. 37
   	F-CAN A_L		No. 11		No. 36
   U0101	F-CAN A_H	CAN gateway 16P connector (female terminals):	No. 3	TCM 50P connector	No. 3
   	F-CAN A_L		No. 11		No. 11
   U0122	F-CAN A_H	CAN gateway 16P connector (female terminals):	No. 3	VSA modulator-control unit 46P connector	No. 40
   	F-CAN A_L		No. 11		No. 28
   U0128	F-CAN A_H	CAN gateway 16P connector (female terminals):	No. 3	VSA modulator-control unit 46P connector	No. 40
   	F-CAN A_L		No. 11		No. 28

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

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

   Is there 1.0 Ω or less?

   YES 

   The F-CAN A_H wire and the F-CAN A_L wire are OK. According to the detected DTC on the following chart 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.

7. 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.

   SCS short

   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 (12P connector type) CAN gateway 16P connector (16P connector type)
   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)

   DTC	Connector
   U129C	Multipurpose camera unit 12P connector

   -4. Measure the resistance between test points 1 and 2.

   Test condition

   Vehicle OFF (LOCK) mode CAN gateway 12P connector (12P connector type): disconnected CAN gateway 16P connector (16P connector type): disconnected Transmitting control unit connector(s) for indicated DTCs: disconnected

   CAN gateway 12P connector type 

   DTC	Circuit name	Test point 1 (Receiving control unit)		Test point 2 (Transmitting control unit)
   		Connector	Terminal	Connector	Terminal
   U0100	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
   U0104	F-CAN B_H	CAN gateway 12P connector (female terminals):	No. 12	Millimeter wave radar 8P connector	No. 7
   	F-CAN B_L		No. 5		No. 6
   U0114	F-CAN B_H	CAN gateway 12P connector (female terminals):	No. 12	Real time AWD control unit 24P connector	No. 14
   	F-CAN B_L		No. 5		No. 24
   U0122	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
   U0128	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
   U0131	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	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
   U129C	F-CAN B_H	CAN gateway 12P connector (female terminals):	No. 12	Multipurpose camera unit 12P connector	No. 11
   	F-CAN B_L		No. 5		No. 5

   CAN gateway 12P connector type 

   DTC	Circuit name	Test point 1 (Receiving control unit)		Test point 2 (Transmitting control unit)
   		Connector	Terminal	Connector	Terminal
   U0100	F-CAN B_H	CAN gateway 16P connector (female terminals):	No. 6	PCM connector A (50P)	No. 39
   	F-CAN B_L		No. 14		No. 38
   U0104	F-CAN B_H	CAN gateway 16P connector (female terminals):	No. 6	Millimeter wave radar 8P connector	No. 7
   	F-CAN B_L		No. 14		No. 6
   U0114	F-CAN B_H	CAN gateway 16P connector (female terminals):	No. 6	Real time AWD control unit 24P connector	No. 14
   	F-CAN B_L		No. 14		No. 24
   U0122	F-CAN B_H	CAN gateway 16P connector (female terminals):	No. 6	VSA modulator-control unit 46P connector	No. 46
   	F-CAN B_L		No. 14		No. 34
   U0128	F-CAN B_H	CAN gateway 16P connector (female terminals):	No. 6	VSA modulator-control unit 46P connector	No. 46
   	F-CAN B_L		No. 14		No. 34
   U0131	F-CAN B_H	CAN gateway 16P connector (female terminals):	No. 6	EPS control unit connector B (6P)	No. 3
   	F-CAN B_L		No. 14		No. 1
   U0151	F-CAN B_H	CAN gateway 16P connector (female terminals):	No. 6	SRS unit connector A (39P)	No. 34
   	F-CAN B_L		No. 14		No. 35
   U129C	F-CAN B_H	CAN gateway 16P connector (female terminals):	No. 6	Multipurpose camera unit 12P connector	No. 11
   	F-CAN B_L		No. 14		No. 5

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

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

   Is there 1.0 Ω or less?

   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.

8. 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.

   SCS short

   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

   DTC	Connector
   U0128	VSA modulator-control unit 46P connector
   U0131	EPS control unit connector B (6P)
   U0151	SRS unit connector A (39P)

   -4. Measure the resistance 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)
   		Connector	Terminal	Connector	Terminal
   U0100	F-CAN_H	Gauge control module connector A (32P)	No. 19	PCM connector A (51P)	No. 2
   	F-CAN_L		No. 20		No. 1
   U0114	F-CAN_H	Gauge control module connector A (32P)	No. 19	Real time AWD control unit 24P connector	No. 14
   	F-CAN_L		No. 20		No. 24
   U0122	F-CAN_H	Gauge control module connector A (32P)	No. 19	VSA modulator-control unit 46P connector	No. 40
   	F-CAN_L		No. 20		No. 28
   U0128	F-CAN_H	Gauge control module connector A (32P)	No. 19	VSA modulator-control unit 46P connector	No. 40
   	F-CAN_L		No. 20		No. 28
   U0131	F-CAN_H	Gauge control module connector A (32P)	No. 19	EPS control unit connector B (6P)	No. 3
   	F-CAN_L		No. 20		No. 1
   U0151	F-CAN_H	Gauge control module connector A (32P)	No. 19	SRS unit connector A (39P)	No. 34
   	F-CAN_L		No. 20		No. 35

   Is there 1.0 Ω or less?

   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.