DTC U0081 (131) (Battery Condition Monitor Module A)

DTC U0081  : EP-CAN 2 Malfunction (Battery Condition Monitor Module A Bus-Off)

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.

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

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   U0081 EP-CAN 2 Malfunction (Battery Condition Monitor Module A Bus-Off)

   Is DTC U0081 indicated?

   YES 

   Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at battery condition monitor module A and battery condition monitor module B. 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. Shorted wire check (EPP-CAN B_H line to EPP-CAN B_L line)

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

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

   -3. Remove the service plug .

   -4. Remove the IPU .

   -5. Remove the IPU cover .

   -6. Disconnect the following connectors.

   Battery condition monitor module A connector G (24P)

   Battery condition monitor module B connector G (24P)

   -7. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Battery condition monitor module A connector G (24P): disconnected
   	Battery condition monitor module B connector G (24P): disconnected
   Test point 1	Battery condition monitor module A connector G (24P) No. 10
   Test point 2	Battery condition monitor module A connector G (24P) No. 22

   Is there continuity?

   YES 

   Repair a short in the EPP-CAN B_H to EPP-CAN B_L wires between battery condition monitor module A and battery condition monitor module B.

   NO 

   Go to step 3.

3. Shorted wire check (EPP-CAN B_H line, EPP-CAN B_L line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Battery condition monitor module A connector G (24P): disconnected
   	Battery condition monitor module B connector G (24P): disconnected
   Test point 1	Battery condition monitor module A connector G (24P) No. 10
   Test point 2	Body ground

   Test point 1	Battery condition monitor module A connector G (24P) No. 22
   Test point 2	Body ground

   Is there continuity?

   YES 

   Repair a short in the EPP-CAN B_H wire and/or the EPP-CAN B_L wire between battery condition monitor module A and battery condition monitor module B.

   NO 

   Go to step 4.

4. Battery condition monitor module B check

   -1. Reconnect battery condition monitor module A connector G (24P).

   NOTE: Do not connect battery condition monitor module B connector G (24P).

   -2. Install the IPU cover .

   -3. Install the IPU .

   -4. Install the service plug .

   -5. Do the 12 volt battery terminal reconnection procedure .

   -6. Turn the vehicle to the ON mode.

   -7. Clear the DTC with the HDS.

   -8. Turn the vehicle to the OFF (LOCK) mode.

   -9. Turn the vehicle to the ON mode.

   -10. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   U0081 EP-CAN 2 Malfunction (Battery Condition Monitor Module A Bus-Off)

   Is DTC U0081 indicated?

   YES 

   Check for any authorized service information related to the DTC(s) or symptoms you are troubleshooting or substitute a known-good battery condition monitor module A .

   NO 

   Check for any authorized service information related to the DTC(s) or symptoms you are troubleshooting or substitute a known-good battery condition monitor module B .