DTC U1600 (102), U1603 (100) (Motor Control Module)

DTC U1600  : F-CAN Malfunction (Traction Motor Control Module - PCM)

DTC U1603  : F-CAN Malfunction (Traction Motor Control Module - Battery Condition Monitor Module)

NOTE: 

• Before you troubleshoot, review the general troubleshooting information .
• According to the detected DTC(s), check for the power circuit and the ground circuit of the control unit which cannot communicate with the motor control module.

DTC (Electric Powertrain)

1. CAN gateway system DTCs check

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Turn the vehicle to the OFF (LOCK) mode.

   -4. Turn the vehicle to the ON mode.

   -5. Check for CAN gateway system DTCs with the HDS.

   DTC Description	Confirmed DTC

   DTC (CAN GATEWAY)

   Are any DTCs indicated?

   YES 

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

   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 PCU detect the CAN gateway Bus channel A?

   Bus A is Not Available

   Go to step 3.

   Bus A is Detected

   Go to step 4.

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

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

   -2. Do the 12 volt battery terminal disconnection procedure .

   -3. Disconnect the following connectors.

   PCU 33P connector

   CAN gateway 16P connector

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

   Test condition	Vehicle OFF (LOCK) mode
   	PCU 33P connector: disconnected
   	CAN gateway 16P connector: disconnected
   Test point 1	PCU 33P connector No. 5
   Test point 2	CAN gateway 16P connector (female terminals) No. 3:

   Test point 1	PCU 33P connector No. 6
   Test point 2	CAN gateway 16P connector (female terminals) No. 11:

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

   Is there 1.0 Ω or less?

   YES 

   Replace the PCU .

   NO 

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

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.

   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
   U1600	PCM	A, B
   U1603	Battery condition monitor 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.

   U1600: PCM is Not Available for Bus A

   Go to step 5.

   U1600: PCM is Not Available for Bus B

   Go to step 6.

   U1603: Battery condition monitor 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. DTC U1600: Jump the SCS line with the HDS, and wait more than 1 minute.

   -3. DTC U1603: Remove the service plug and the IPU cover .

   -4. According to the detected DTC on the following table, disconnect the transmitting control unit connector(s).

   DTC	Connector
   -	CAN gateway 16P connector
   U1600	PCM connector A (50P)
   U1603	Battery condition monitor module connector E (32P)

   -5. Measure the resistance 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)
   		Connector	Terminal	Connector	Terminal
   U1600	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
   U1603	F-CAN A_H	CAN gateway 16P connector (female terminals):	No. 3	Battery condition monitor module connector E (32P)	No. 9
   	F-CAN A_L		No. 11		No. 8

   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 table, substitute, or replace the corresponding unit.

   DTC	Operation for transmitting control unit
   U1600	Replace the PCM .

   DTC	Operation for transmitting control unit
   U1603	Replace the battery condition monitor 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. 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 16P connector
   U1600	PCM connector A (50P)

   -4. Measure the resistance 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)
   		Connector	Terminal	Connector	Terminal
   U1600	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

   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, substitute, or replace the corresponding unit.

   DTC	Operation for transmitting control unit
   U1600	Replace the PCM .

   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.