DTC U0599 (35), U1220 (34) (Battery Condition Monitor Module)

DTC U0599  : DC-DC Converter Serial Communication Receive Error

DTC U1220  : DC-DC Converter Serial Communication Transmit Error

NOTE:  Before you troubleshoot, review the general troubleshooting information .

DTC (Electric Powertrain)

1. Problem verification

   -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, and wait for 10 seconds.

   -5. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   U0599 DC-DC Converter Serial Communication Receive Error
   U1220 DC-DC Converter Serial Communication Transmit Error

   Is DTC U0599 and/or U1220 indicated?

   YES 

   Go to step 2.

   NO 

   Intermittent failure. The system is OK at this time. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.

2. DTC check

   -1. Check for Pending or Confirmed DTCs with the HDS.

   Traction motor control module 

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame

   Generator motor control module 

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame

   DTC (Electric Powertrain)

   Are DTC U0599 or U1220, and any other DTCs indicated at the same time?

   YES 

   Go to the indicated DTC's troubleshooting.

   NO 

   Go to step 3.

3. CAN gateway system DTCs check

   -1. Check for CAN gateway system DTCs with the HDS.

   DTC Description	DTC

   DTC (CAN GATEWAY)

   Are any DTCs indicated?

   YES 

   Go to the CAN gateway system troubleshooting .

   NO 

   Go to step 4.

4. Open wire check (F-CAN A_H line)

   -1. Remove the service plug and the IPU cover .

   -2. Disconnect the following connectors.

   Battery condition monitor module connector E (32P)

   PCU 33P connector

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

   Test condition	Vehicle OFF (LOCK) mode
   	Battery condition monitor module connector E (32P): disconnected
   	PCU 33P connector: disconnected
   Test point 1	Battery condition monitor module connector E (32P) No. 9
   Test point 2	PCU 33P connector No. 5

   Is there 1.0 Ω or less?

   YES 

   The F-CAN A_H wire is OK. Go to step 5.

   NO 

   Repair an open in the F-CAN A_H wire between the PCU and the battery condition monitor module (E9).

5. Open wire check (F-CAN A_L line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Battery condition monitor module connector E (32P): disconnected
   	PCU 33P connector: disconnected
   Test point 1	Battery condition monitor module connector E (32P) No. 8
   Test point 2	PCU 33P connector No. 6

   Is there 1.0 Ω or less?

   YES 

   The F-CAN A_L wire is OK. Replace the PCU .

   NO 

   Repair an open in the F-CAN A_L wire between the PCU and the battery condition monitor module (E8).